Canonical URL: https://natureslens.co.uk/best-focal-length-for-wildlife-photography/ # What Focal Length Should You Use for Wildlife Photography? Published on October 12, 2026 [![Side view of the Sony FE 400-800mm F6.3-8 G OSS super-telephoto zoom lens](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-400-800mm-f6-3-8-g-oss-side-view.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-400-800mm-f6-3-8-g-oss-side-view.jpg) Written by [David Miles](https://natureslens.co.uk/guides/david/). ### Article brief Editorial article Published October 12, 2026 One of the questions I am asked most often before a NaturesLens wildlife photography holiday is which lens somebody should bring, usually expressed as a choice between 300mm, 400mm, 500mm or 600mm. There is a temptation to believe that wildlife photography begins at 400mm & that more focal length automatically means better photographs. After years of travelling with cameras through places as different as Costa Rica, [Hokkaido](https://natureslens.co.uk/specific-location/hokkaido/), [Africa](https://natureslens.co.uk/discover/africa/), Scandinavia & [South America](https://natureslens.co.uk/discover/south-america/), I have become increasingly convinced that this is the wrong way to look at it. For most wildlife photographers, the genuinely useful range is somewhere between 100mm & 600mm, but that does not mean everybody needs to carry lenses covering every millimetre within it. The right focal length depends on the size of the animal, how closely you can approach, how quickly it moves, the habitat around it &, perhaps most importantly, the photograph you are trying to make. Sometimes 600mm is indispensable. On other occasions it is precisely the lens that stops you making the strongest image. ## Is 400mm the best all-round focal length for wildlife photography? If I were forced to choose one focal length around which to build a wildlife photography kit, 400mm would probably be the centre of it, but I would much rather have that focal length as part of a flexible system than regard it as some sort of universal answer. [![Side View Of The Sony Fe 400Mm F4.5 Gm Oss Lens Showing Its White Barrel And 400 Marking](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-400mm-f4-5-gm-oss-side-view.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-400mm-f4-5-gm-oss-side-view.jpg) Both [Pui Hang](https://natureslens.co.uk/about/pui-hang/) & I use the Sony 400mm f/2.8 GM, & it remains a lens we are very happy to travel with when the photographic opportunities justify carrying it. There is something particularly attractive about the combination of 400mm, f/2.8 & modern high-resolution bodies such as our Sony A1 II cameras. Subject separation can be beautiful, autofocus performance is superb, the aperture gives you options as the light deteriorates &, with a 1.4× teleconverter, it effectively becomes a 560mm f/4 when extra reach really is required. [![Sony Fe 400Mm F2.8 Gm Oss Super-Telephoto Lens Mounted On A Sony Alpha 9 Camera With Grip](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-400mm-f2-8-gm-on-alpha-9.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-400mm-f2-8-gm-on-alpha-9.jpg) Yet I would never tell somebody that they need a 400mm f/2.8 to photograph wildlife successfully. On many of our trips, a 100 – 400mm zoom is actually the more useful lens because wildlife simply does not behave at a predetermined distance. That becomes obvious on our Ultimate Costa Rica photography holiday. One moment we might be photographing a perched bird across a clearing, where 400mm is ideal, then ten minutes later something lands almost beside us & suddenly 400mm is far too tight. Hummingbirds in particular can move through several useful shooting distances within seconds. Being able to pull back from 400mm towards 200mm or 300mm may mean the difference between following the bird & repeatedly cutting wings or tails out of the frame. That is why I increasingly think of 400mm as the middle of wildlife photography rather than its starting point. ## When is a 100 – 400mm zoom better than a 500mm or 600mm lens? A good 100 – 400mm is probably the lens I recommend most often to photographers travelling with us because its greatest strength is not simply its focal length range, but how quickly it allows you to react when the situation changes. [![Side View Of The Sony Fe 100-400Mm F4.5 Gm Oss Telephoto Zoom Lens With Tripod Foot](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-100-400mm-f4-5-gm-oss-side-view.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-100-400mm-f4-5-gm-oss-side-view.jpg) Wildlife photography is full of situations where the photograph you expected is not the photograph that appears. A deer walks towards you rather than away. A [leopard](https://natureslens.co.uk/photograph/leopard/) climbs onto a branch much closer than anticipated. A bird that has spent twenty minutes on the far side of a pool suddenly uses a perch directly in front of you. With a large prime, your only zoom mechanism is often your feet, & that is not terribly helpful from a vehicle, boat, hide or fixed photography position. I now use the new Sony 100 – 400mm f/4.5, & for me it has become an increasingly important part of the kit for precisely that reason. It gives me the flexibility of a 100 – 400mm zoom while still being a lens I am perfectly happy to use as a principal wildlife lens rather than simply regarding it as the lightweight option I take when I do not want to carry a prime. Being able to move quickly from 400mm back towards 300mm, 200mm or even 100mm is extraordinarily useful when a subject moves closer than expected, when several animals begin interacting or when the habitat suddenly becomes an important part of the photograph. That last point matters. Wildlife photography does not always improve as the animal becomes larger in the frame. Some of my favourite opportunities are those where the surroundings explain something about the subject: a crane standing within falling snow, a mammal beneath the woodland canopy or a bird occupying a particularly beautiful perch. Pulling back from 400mm to 250mm can transform a straightforward portrait into an environmental image. This is particularly useful with larger [African](https://natureslens.co.uk/discover/africa/) mammals. On a photography-led safari, where positioning the vehicle & allowing time for behaviour are more important to us than rushing between species, animals may come surprisingly close. At that point, 500mm or 600mm can become restrictive while 100 – 400mm gives you portraits, behaviour, animals within the landscape & smaller details from the same encounter. Photographic variety often comes from changing how much you include, not simply getting closer. ## When do you genuinely need 500mm or 600mm for wildlife? There absolutely are occasions when focal length becomes important, particularly with small birds, distant mammals or subjects that cannot sensibly be approached more closely. In those circumstances, 500mm, 600mm or even more can make photographs possible that simply would not work at 300mm. [![Sony Fe 600Mm F6.3 Gm Lens Mounted On A Sony Alpha 9 Camera](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-600mm-f6-3-gm-on-alpha-9.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-600mm-f6-3-gm-on-alpha-9.jpg) Bird photography is the obvious example. A [Kingfisher](https://natureslens.co.uk/photograph/common-kingfisher/) occupying a distant perch, a small passerine high in woodland or a raptor that refuses to approach may occupy such a tiny proportion of the frame at 300mm that substantial cropping becomes unavoidable. A 500mm or 600mm lens allows you to put more pixels on the bird while maintaining a sensible working distance. But there is a difference between needing 600mm occasionally & needing to carry a traditional 600mm f/4 everywhere, & this is one area where lens design is changing very quickly. [![Front Three-Quarter View Of The Sony Fe 600Mm F4 Gm Oss Super-Telephoto Lens With Its Large Front Element](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-600mm-f4-gm-front-angle.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-600mm-f4-gm-front-angle.jpg) For years, choosing a serious 500mm or 600mm prime meant accepting a very large, very expensive lens that dominated both your hand luggage allowance & your photographic day. That calculation is beginning to change. The new generation of lighter, high-quality 400mm, 500mm & 600mm primes from Nikon & Sony is changing the game completely, because focal lengths that once felt like expedition equipment are becoming much more realistic for the travelling wildlife photographer. That matters enormously. A 600mm lens that you can comfortably carry for several hours is a completely different proposition from one that spends half the trip in the hotel room because you cannot face taking it with you. I own Sony’s 600mm f/4, yet I use it surprisingly little because, superb though it is, its size & weight still have to be justified by the particular trip. The newer generation of lightweight long primes changes that balance. We are moving towards a point where choosing 400mm, 500mm or 600mm need not automatically mean choosing between reach & mobility. There are compromises, of course. A smaller & lighter long prime may not give you the same maximum aperture as a 400mm f/2.8 or 600mm f/4, so if I know I am going to be working in really poor light, photographing at dawn or dusk, or looking for the strongest possible subject separation, the faster lens still has an obvious advantage. But for wildlife photographed in reasonable light, particularly birds, that trade-off can make enormous sense. [![Sony Fe 600Mm F4 Gm Oss Super-Telephoto Lens Mounted On A Sony Alpha 9 Camera With Grip](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-600mm-f4-gm-on-alpha-9.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-600mm-f4-gm-on-alpha-9.jpg) Modern high-resolution cameras have altered the equation further. Starting with a sharp 400mm image from a high-resolution sensor leaves considerable room for cropping, while a lightweight 500mm or 600mm gives you the alternative of putting more pixels on the subject without taking on the physical burden that long primes once imposed. The question is therefore no longer simply, “Do I want 600mm enough to carry a massive lens?” Increasingly, it is whether a new-generation lightweight prime gives you useful extra reach without materially changing the way you travel or photograph. ## How does the species you photograph change the focal length you need? Subject size matters, but behaviour & the way we photograph the animal matter just as much. There is no meaningful comparison between photographing a hummingbird weighing a few grams & photographing a rhinoceros, even though both fall comfortably under the heading of wildlife photography. [![Sony Fe 300Mm F2.8 Gm Oss Super-Telephoto Lens From The Front With The Lens Hood Removed](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-300mm-f2-8-gm-oss-front-angle-no-hood.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-300mm-f2-8-gm-oss-front-angle-no-hood.jpg) In [Costa Rica](https://natureslens.co.uk/discover/central-america/costa-rica/), I generally regard the 100 – 400mm as an exceptionally useful main lens because we are moving between birds, mammals, reptiles, frogs & specialist sessions where working distances vary enormously. At some locations a bird may repeatedly use a known perch, allowing us to position ourselves carefully & select a focal length around that opportunity. Elsewhere we are responding to something moving naturally through the rainforest, where flexibility becomes much more valuable. [Japan](https://natureslens.co.uk/discover/asia/japan/) presents another set of decisions. On our [Japanese Wildlife in Winter](https://natureslens.co.uk/photography-holiday/japan/japanese-wildlife-in-winter/) photography holiday we photograph [Red-crowned Cranes](https://natureslens.co.uk/photograph/red-crowned-crane/) around [Tsurui](https://natureslens.co.uk/specific-location/tsurui/), [Whooper Swans](https://natureslens.co.uk/photograph/whooper-swan/), [Japanese Macaques](https://natureslens.co.uk/photograph/japanese-macaque/) & the Steller’s & [White-tailed Eagles](https://natureslens.co.uk/photograph/white-tailed-eagle/) around Rausu. Those species do not call for a single lens solution. A 400mm prime can be glorious when a crane is dancing against a clean snowy background, particularly when the winter light begins to fall, but a zoom becomes extremely valuable when several cranes interact & the composition changes every few seconds. On the sea-eagle boats at [Rausu](https://natureslens.co.uk/specific-location/rausu/), the birds can move from distant flight to filling the frame remarkably quickly. Being stuck at 600mm may mean beautiful detail at one moment followed by an enormous collection of photographs containing half an eagle. That is why equipment recommendations for NaturesLens trips are based around the actual photographic sessions rather than simply producing a generic wildlife packing list. The species matters, but so do distance, behaviour, habitat & how much control we have over our position. ## Why is the longest lens not always the best lens for wildlife photography? The attraction of a long lens is understandable because wildlife photographers spend a great deal of time wishing an animal were closer. The danger comes when focal length starts determining the photograph before we have looked properly at the scene. [![Sony Fe 400-800Mm F6.3-8 G Oss Super-Telephoto Lens Seen From The Reverse Side With Tripod Foot And G Badge](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-400-800mm-f6-3-8-g-oss-reverse-side-view.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-400-800mm-f6-3-8-g-oss-reverse-side-view.jpg) If you automatically reach for 600mm whenever an animal appears, you tend to produce a particular kind of image: the subject becomes large, the background becomes compressed & much of the habitat disappears. That can be exactly what you want, especially for a clean portrait, but an entire portfolio made that way becomes surprisingly repetitive. I increasingly look for opportunities to work in the opposite direction. If the background is attractive, I want some of it. If a bird is using a wonderful moss-covered branch, I do not necessarily want to crop the perch away. If an animal is standing within mist, snow, rainforest or grassland, those elements are part of the encounter rather than inconvenient empty space around the subject. This is also one of the fundamental differences between a photography-led itinerary & a conventional wildlife or birding tour. We are not trying to see the greatest possible number of species before moving on. If a subject is photographically productive, I would generally rather remain there, watch what it is doing, adjust our position where possible, consider the background & give everybody time to try several compositions. That may mean starting at 400mm for a portrait, moving to 300mm when behaviour develops between two animals, then pulling back towards 150 – 200mm when the animal moves into a particularly attractive piece of habitat. Focal length then becomes a creative choice rather than simply magnification. That is where I think wildlife photography becomes much more interesting. ## What focal lengths would I actually take on a wildlife photography trip? For most photographers travelling on a varied wildlife trip, I still think the most useful starting point is a 100 – 400mm or similar telephoto zoom, complemented by something longer when the destination or subjects genuinely justify it. What has changed in the last few years is that “something longer” no longer necessarily means a huge 500mm or 600mm f/4. [![Sony Fe 100-400Mm F4.5 Gm Oss Zoom Lens Mounted On A Sony Alpha 9 Camera](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-100-400mm-f4-5-gm-oss-on-alpha-9.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-100-400mm-f4-5-gm-oss-on-alpha-9.jpg) My own kit gives me several options. The 70 – 200mm is there when animals are particularly close, when I want to work more widely or when the f/2.8 aperture is useful. The new Sony 100 – 400mm f/4.5 now covers an enormous amount of my everyday wildlife photography because it gives me genuinely useful flexibility while still delivering the sort of quality I want from a principal wildlife lens. The 400mm f/2.8 remains the lens I choose when I want the extra aperture, subject separation & low-light capability, while the 1.4× converter takes that to 560mm f/4 when additional reach is worthwhile. The 600mm f/4 is there when I know the subject & conditions justify it, but I am much more selective about when it comes with me simply because of the physical commitment involved. For somebody building a system today, though, I would look very seriously at the new generation of lightweight long primes. Nikon & Sony are both producing lenses which make serious 400mm, 500mm & 600mm wildlife photography much easier to travel with, & that is one of the biggest changes in lens choice we have seen for some time. It is not simply about shaving weight from a specification sheet. It changes whether you are prepared to carry the lens all day, whether it travels comfortably through airports, whether you can walk several kilometres with it &, most importantly, whether you still feel able to react quickly when the wildlife changes the plan. That is important because portability used to be one of the strongest arguments against fixed 500mm & 600mm lenses. It is much less clear-cut now. The aperture question still matters. If I know I am going to be photographing in very poor light, working at dawn or dusk, or trying to isolate a subject against a difficult background, I will still value the speed of the 400mm f/2.8 enormously. But if somebody is primarily photographing birds in good daylight & wants reach without carrying the traditional super-telephoto bulk, these newer lenses genuinely are changing the game. I would still avoid choosing equipment purely because somebody has declared that “wildlife requires 600mm”. Before every NaturesLens trip I would rather consider what we are going to photograph, how we are going to photograph it & the working distances we expect. The best wildlife kit is still the one you can comfortably use for the whole photographic day. ## So what is the best focal length for wildlife photography? There still is not a single best focal length for wildlife photography, because the answer changes with the subject, the distance, the habitat & the photograph you are trying to make. For many photographers, 400mm remains an extremely useful centre point, while a 100 – 400mm zoom is probably the most flexible option for mixed wildlife. Go towards 500mm or 600mm & the balance shifts increasingly towards smaller birds, more distant subjects & situations where getting physically closer is neither possible nor desirable. [![Side View Of The Sony Fe 600Mm F6.3 Gm Super-Telephoto Lens Showing Its 600 Marking](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-600mm-f6-3-gm-side-view.jpg)](https://natureslens.co.uk/wp-content/uploads/2026/10/sony-fe-600mm-f6-3-gm-side-view.jpg) What has changed quite significantly, though, is the equipment itself. The latest generation of lightweight, high-quality long primes from Nikon & Sony means that 400mm, 500mm & 600mm no longer automatically come with the same physical penalty they once did. That opens up options which, only a few years ago, many travelling wildlife photographers would have dismissed simply because the lens was too large or too heavy to live with comfortably for a full day in the field. For me, that makes the decision more interesting rather than simpler. I still do not think photographers should automatically reach for the longest focal length available. The real question is what the lens allows you to do photographically. Does it help you work with the light? Does it give you the background you want? Can you include enough habitat to tell the story of the subject? Can you react when behaviour suddenly changes? Can you carry it comfortably enough that it is actually with you when the opportunity appears? That is how I think about focal length when we are photographing with NaturesLens. I want the lens choice to serve the image rather than dictate it. Sometimes that means filling the frame with a bird at 600mm. Sometimes it means working at 300mm or 400mm because two animals begin interacting. Sometimes the strongest photograph comes from pulling right back & showing the wildlife as part of the landscape rather than isolating it completely. The technology is giving us more freedom than ever before, particularly as long primes become lighter & more practical, but the principle remains exactly the same: the best focal length is the one that gives you the photograph you want without limiting your ability to respond to what the wildlife actually does. ## Related Reading - [Why Could the Sony FE 100-400mm F4.5 GM OSS Be Such an Important Wildlife Photography Lens?](https://natureslens.co.uk/sony-fe-100-400mm-f4-5-gm-oss-wildlife-lens/) - [Is the Sony FE 400mm F4.5 GM OSS the Ideal Wildlife Photography Travel Lens?](https://natureslens.co.uk/sony-lenses-for-wildlife/sony-fe-400mm-f4-5-gm-oss/) - [My Thoughts on the Sony FE 100-400mm f/4.5 GM OSS Lens](https://natureslens.co.uk/sony-lenses-for-wildlife/sony-fe-100-400mm-f4-5-gm-oss/) **Related Trips:** [Japanese Wildlife in Winter Photography Tour](https://natureslens.co.uk/photography-holiday/japan/japanese-wildlife-in-winter/) **Explore by Country:** [Japan](https://natureslens.co.uk/discover/asia/japan/) **Related Species:** [Black-eared Kite](https://natureslens.co.uk/photograph/black-eared-kite/), [Ezo Flying Squirrel](https://natureslens.co.uk/photograph/ezo-flying-squirrel/), [Ezo Red Fox](https://natureslens.co.uk/photograph/ezo-red-fox/), [Ezo Red Squirrel](https://natureslens.co.uk/photograph/ezo-red-squirrel/), [Ezo Sika Deer](https://natureslens.co.uk/photograph/ezo-sika-deer/), [Hokkaido Sika Deer](https://natureslens.co.uk/photograph/hokkaido-sika-deer/), [Japanese Macaque](https://natureslens.co.uk/photograph/japanese-macaque/), [Long-tailed Tit](https://natureslens.co.uk/photograph/long-tailed-tit/), [Red-crowned Crane](https://natureslens.co.uk/photograph/red-crowned-crane/), [Steller's Sea Eagle](https://natureslens.co.uk/photograph/stellers-sea-eagle/), [Ural Owl](https://natureslens.co.uk/photograph/ural-owl/) & [White-tailed Eagle](https://natureslens.co.uk/photograph/white-tailed-eagle/) - [![Puffins In The Snow Photographed At One Of The Locations For This Puffins In The Snow Photography Holiday](https://natureslens.co.uk/wp-content/uploads/2024/07/Puffins-in-the-snow-photographed-at-one-of-the-locations-for-this-Puffins-in-the-snow-photography-holiday-300x200.jpg)](https://natureslens.co.uk/2025/05/20/new-dates-guide-for-puffins-in-the-snow/) ### [New Dates & Guide for Winter Wildlife of Arctic Varanger](https://natureslens.co.uk/2025/05/20/new-dates-guide-for-puffins-in-the-snow/) May 20, 2025 Join Alison on our Arctic Wildlife & Winter Wildlife of Arctic Varanger photography holiday in late-March 2026. Capture a rich… - [![A Lesser Kestrel Rests On The Tiles Of A Derelict Barn Photographed During One Of The Natureslens Photography Holidays To Spain](https://natureslens.co.uk/wp-content/uploads/2019/06/a-lesser-kestrel-rests-on-the-tiles-of-a-derelict-barn-photographed-during-one-of-the-natureslens-photography-holidays-to-spain.jpg)](https://natureslens.co.uk/2019/07/18/birdlife-of-spains-plains-of-calera/) ### [15 images of the diverse birdlife of Spain’s plains of Calera](https://natureslens.co.uk/2019/07/18/birdlife-of-spains-plains-of-calera/) July 18, 2019 In this second trip report on the birdlife of Spain, I look back at our week in Calera. We arrived… - [![A Little Owl Perched On Tree Stump](https://natureslens.co.uk/wp-content/uploads/2025/09/A-little-owl-perched-on-tree-stump-300x225.jpg)](https://natureslens.co.uk/2025/09/29/other-species-to-photograph-wildlife-photography-holiday-in-extremadura/) ### [Other species to Photograph during our Wildlife Photography Holiday in Extremadura](https://natureslens.co.uk/2025/09/29/other-species-to-photograph-wildlife-photography-holiday-in-extremadura/) September 29, 2025 Discover the other species you can photograph during our Wildlife Photography Holiday in Extremadura, including golden eagles, kestrels, little owls… In this articleJump to section 1. [Is 400mm the best all-round focal length for wildlife photography?](https://natureslens.co.uk/best-focal-length-for-wildlife-photography/#is-400mm-the-best-all-round-focal-length-for-wildlife-photography) 1. [When is a 100 - 400mm zoom better than a 500mm or 600mm lens?](https://natureslens.co.uk/best-focal-length-for-wildlife-photography/#when-is-a-100-400mm-zoom-better-than-a-500mm-or-600mm-lens) 1. [When do you genuinely need 500mm or 600mm for wildlife?](https://natureslens.co.uk/best-focal-length-for-wildlife-photography/#when-do-you-genuinely-need-500mm-or-600mm-for-wildlife) 1. [How does the species you photograph change the focal length you need?](https://natureslens.co.uk/best-focal-length-for-wildlife-photography/#how-does-the-species-you-photograph-change-the-focal-length-you-need) 1. [Why is the longest lens not always the best lens for wildlife photography?](https://natureslens.co.uk/best-focal-length-for-wildlife-photography/#why-is-the-longest-lens-not-always-the-best-lens-for-wildlife-photography) 1. [What focal lengths would I actually take on a wildlife photography trip?](https://natureslens.co.uk/best-focal-length-for-wildlife-photography/#what-focal-lengths-would-i-actually-take-on-a-wildlife-photography-trip) 1. [So what is the best focal length for wildlife photography?](https://natureslens.co.uk/best-focal-length-for-wildlife-photography/#so-what-is-the-best-focal-length-for-wildlife-photography) ### Author Written by [David Miles](https://natureslens.co.uk/guides/david/). Next step ### Find your next wildlife photography holiday Browse small-group trips by destination, subject, season and photographic goal. [Browse Holidays](https://natureslens.co.uk/) ### Article topics ### Field notes by email New articles, trip reports and wildlife photography holiday announcements from NaturesLens. [Join The List](https://natureslens.co.uk/newsletter-preferences/)