What is magnification (or maximum reproduction) ratio?

Nikon Team3 min čitanja22 svi 2026Camera 101

Every lens has a magnification ratio, but what does this mean and when does it matter?

On the spec sheet of any lens, one of the things you’ll see is its magnification ratio (or maximum reproduction ratio). This is simply a way of saying how big the image of an object is on the sensor compared to its actual size. So, for example, if a lens can create a ‘life-size’ image of a 1cm object that is 1cm on the sensor, the lens’s ratio is 1:1, often written as 1.0x. If a 1cm object creates a 0.5cm image, half the size, the ratio is 1:2 (or 0.5x) and so on.

Every lens has a magnification ratio, but what does this mean and when does it matter?

Nikon Team

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Of course, most lenses show projections of objects a lot smaller than they are in real life. Maximum reproduction ratios vary across different lenses. The NIKKOR Z 50mm f/1.4, for example, has a maximum reproduction ratio of 0.17x, and the NIKKOR Z 400mm f/4.5 VR S has one of 0.16x. However, in full-frame photography true macro lenses have a magnification ratio of at least 1:1 (or 1.0x), allowing you to take hugely detailed, frame-filling images of things such as small flowers, insects and tiny objects.

Depth of field

When using a high magnification ratio lens, your depth of field becomes extremely narrow, which is great for isolating your subject against a soft, blurred background. The challenge is to maintain sharp focus on your subject with such a narrow plane of focus, which is why so many pro macro photographers will use autofocus to get ‘in the zone’ and then switch to manual for the finest adjustments.

Keeping it steady

Because of the narrow focal plane and the small size of your subject in macro photography, the effects of things such as camera shake can also be magnified, so it’s always advisable to use a tripod and ensure you have Vibration Reduction turned on, if available, on your lens and/or camera.

What does ‘macro’ mean?

A lens is described as macro if it has a magnification of 1.0x (or greater) when used on a full-frame camera. However, the NIKKOR DX MC 35mm f/1.7 qualifies as a macro lens with a 0.67x maximum reproduction ratio, since it is equivalent to 1.0x on a full-frame camera, as you can see in the diagram below.

So does sensor size matter?

Yes, it does! Although the magnification of a lens stays the same, the image of your subject takes up more room on the smaller sensor, so your composition changes, making the subject bigger in the image.

What are my Nikon choices for macro photography?

For full-frame bodies, the NIKKOR Z MC 50mm f/2.8 and NIKKOR Z MC 105mm f/2.8 VR S are macro lenses with great performance. And for crop sensor DX cameras such as the Nikon Z50II, Z 30 and Z fc, the NIKKOR DX MC 35mm f/1.7 is a great way to get started in closeup photography.