How Many Megapixels Do Wildlife Photographers Really Need?

Alyce Bender
Jul 31
6 min read

Updated: Aug 1

Close-up of a contemplative monkey touching its chin, with another blurred monkey at right; © Bender watermark on dark background. — *Taken with a Nikon D7000 in 2016. If not told, would you have known?*

Megapixels are one of the easiest camera specifications to compare and one of the easiest to overvalue. More resolution can be useful in wildlife photography, particularly when a subject is small in the frame or an image may eventually become a large print. But the number on the camera body tells only part of the story.

The more practical question is not, “How many megapixels does my camera have?” It is, “How many usable megapixels remain after I have cropped and prepared the image for its final purpose?”

For many photographers, 20 to 30 megapixels is enough for nearly every common use. Higher-resolution cameras provide additional flexibility, but they do not automatically produce a sharper or more detailed wildlife photograph.

Megapixels Are Only the Starting Point

One megapixel represents approximately one million pixels. A 24-megapixel camera therefore records roughly 24 million pixels across the entire image—but the final photograph may use only a portion of them.

If a bird occupies a small part of the frame and the surrounding area is cropped away, the finished image may contain 12, 8, or even fewer megapixels. That remaining resolution, rather than the camera’s original specification, determines how large the photograph can be displayed or printed without enlargement.

Small bird with rusty head and blue-black wings perches on a bare branch against a blurred green background; watermark text below. — *One of the first reasons I considered the Sony Alpha 1, when upgrading from my Nikon D500 APS-C DSLR body, was because when the Sony A1 is in crop mode I still have over 20mp.*

This is where higher-resolution bodies can be helpful. My Sony Alpha 1 records approximately 50.1 megapixels, giving me considerable room to refine a composition after the fact. If I use its APS-C crop mode, however, the resulting file is approximately 21 megapixels. That is still enough for many professional uses, but it illustrates how quickly the headline number changes once only part of the sensor is used.

How Many Megapixels Do You Need for Social Media?

Collage of wildlife and landscapes: hippo, eagle, bear cub, elephant, waterfall, badlands; center portrait reads MEET OUR PARTNER PHOTOGRAPHERS — *Screenshot of an Instagram Portfolio where images are frequently compressed to meet platform requirements.*

Social media requires far less resolution than most modern cameras produce. An image with roughly 2 to 4 megapixels is generally more than sufficient for Instagram, Facebook, and similar platforms. In many cases, the platform will resize and compress a larger file anyway.

The same is true for photographs used in newsletters, online galleries, and digital articles. A file measuring 2,000 to 3,000 pixels on its longest side will handle most web uses comfortably, depending on the website’s design.

This means a heavily cropped wildlife photograph may still look excellent online even when it no longer contains enough resolution for a large print. Screen presentation can hide limitations that become much more apparent on paper.

Websites and Digital Publications

A Bender Photography LLC gallery webpage showing wildlife and landscape photos: fox, bear, butterfly, moose, hydrangeas, and wetlands — For a prolific photographer like myself who likes sharing what some call "way too many images on her website," it would be a nightmare for visitors if I uploaded them at higher file sizes. As it is, a slow internet connection sometimes kills me when I'm trying to find an image to show off.

Most website images need approximately 2 to 6 megapixels. Even a full-screen image viewed on a 4K display contains only about 8.3 megapixels.

For photographers maintaining portfolios or supplying images for digital articles, extreme file size can become more of a burden than a benefit. Large files may slow page loading without creating a visible improvement for the reader.

For web use, strong detail, accurate focus, thoughtful sharpening, and clean export settings matter more than delivering the camera’s full resolution.

Magazines, Books, and Calendars

Wildlife Photographic magazine cover with a donkey close-up in golden light and headlines about wild animals and the American Southwest. — *When my image made the cover for the UK publication Wildlife Photographic in Spring of 2024 to accompany the article I did for them in the issue.*

Print publications generally require more resolution because the photograph is reproduced at a specific physical size. A common target for high-quality close-viewed printing is 300 pixels per inch, although commercial requirements may range from approximately 150 to 300 ppi depending on the press and publication. The publisher’s submission guidelines should always take priority. Adobe recommends confirming resolution with the prepress provider.

As a practical guide:

Final use	Comfortable working range
Small magazine placement	4–8 MP
Full magazine page	8–12 MP
Two-page spread	16–24 MP
Book or calendar page	12–20 MP
Cover or flexible editorial submission	20–30+ MP

These are working ranges rather than hard limits. The publication’s dimensions, bleed requirements, aspect ratio, gutter placement, and printing method can all change what is needed.

Editors also value compositional flexibility. An image may need to accommodate a headline, fit a vertical cover, or stretch across a horizontal spread. Supplying additional pixels and some open space around the animal gives a designer more room to work.

How Many Megapixels Do You Need for Prints?

At 300 ppi, common print sizes require approximately:

Print size	Approximate resolution needed
5 × 7 inches	3.2 MP
8 × 10 inches	7.2 MP
11 × 14 inches	13.9 MP
12 × 18 inches	19.4 MP
16 × 24 inches	34.6 MP
20 × 30 inches	54 MP
24 × 36 inches	77.8 MP

Those numbers can make large prints sound impossible without a very high-resolution camera, but 300 ppi is not required for every print. It is most valuable for smaller photographs that will be examined closely. Large wall prints are normally viewed from farther away and can often reproduce beautifully at 180 to 240 ppi—or sometimes lower, depending on the image and printing process. Adobe likewise notes that lower resolutions can work well for large-format prints viewed from a distance.

Poster of a Japanese macaque soaking in a steaming hot spring, snow falling behind, with text: Yoshinetsu Kogen National Park. — *1 of 13 24x36 inch glossy canvas prints done for a gallery show that hung in Las Vegas, NV. The file submitted for print was 7200x4800mp at 200ppi.*

The printing surface matters as well. Glossy and metallic surfaces tend to reveal fine detail readily, while canvas, textured papers, and some matte surfaces can be more forgiving. A detailed feather portrait invites close inspection; an environmental wildlife image displayed above a sofa may be experienced primarily from across the room.

More Megapixels Create Options, Not Detail

Higher resolution provides room to crop, change aspect ratios, prepare multiple layouts, and create larger prints. What it cannot do is recover detail the camera never recorded.

A 50-megapixel image softened by subject movement, missed focus, heat shimmer, atmospheric haze, or poor technique will not contain more useful detail than a clean 24-megapixel file. It will simply contain more pixels describing the softness.

I would rather begin with a sharp, well-timed frame from a moderate-resolution body than rely on a high-megapixel camera to rescue a distant subject. Resolution is most valuable when the lens, light, focus, shutter speed, field technique, and atmospheric conditions allow those pixels to record meaningful information.

So, How Many Megapixels Are Enough?

For most wildlife photographers:

20 to 24 megapixels is enough for social media, websites, editorial use, books, calendars, and small to moderately large prints.
30 to 45 megapixels provides more room for cropping, changing layouts, and producing larger prints.
50 megapixels or more is especially useful for small subjects, substantial cropping, highly detailed wall prints, and photographers who routinely supply files for varied professional uses.

Both of these were taken with the Sony A1 and Tamron 25-200mm lens. One was taken on full frame at the full 50 megapixels and the other in crop mode for 21 megapixels. Does it make a difference?

The best number is not necessarily the largest one. It is the resolution that supports the photographer’s actual output while leaving enough room for the way wildlife images are realistically captured and cropped.

Before upgrading a camera for more megapixels, look at your finished files. How much do you usually crop? Where are the photographs displayed? How often do you print beyond 16 × 24 inches? Those answers will reveal far more than a specification sheet.