What’s more important for image quality: a high megapixel sensor or a good lens?

Close-up of an image sensor, next to an image of a camera lens — Is your sensor more important than your lens? (Image credit: James Artaius)

These days we see some absolute behemoth full-frame camera sensors packing 50, 60 and now close to 70MP (megapixels). While these specs are certainly attractive, and do contribute towards the overall quality of your images, they’re only as good as the lens you pair them with.

Megapixel counts can create a false perception, with many photographers – especially newcomers – falling into the trap of thinking the higher the number, the better quality their images will be.

To an extent, this is correct. After all, a top-tier full-frame model – such as the Sony A7R VI with its 67MP sensor – will enable you to crop in closely in post-production without losing definition or degrading image colors. You will get much more leeway than an older DSLR with, say, a 24MP sensor.

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However, if you stick a poorly made lens onto that same Sony full-frame beast then it’s a different story – and you won’t even need to crop the image tightly to see the difference.

Sony sensor — Sony makes fantastic high-resolution image sensors, as do other chip makers like Canon. But if you put a poor lens on the front, all you're going to get is a hi-res shot full of optical flaws (Image credit: Sony)

What you need to keep in mind is that lenses are what determine the sharpness, clarity and even the color rendering, as well as suppressing aberrations and distortion.

So if your lens doesn’t handle these tasks well, then a high-resolution sensor will only highlight the flaws of your poor-quality lens. On the other hand, a great lens can make even a modest sensor perform better.

All this isn’t to say that you should only buy the most expensive lenses. Not at all. In fact, cheaper third-party manufacturers like Tamron, Sigma and now Viltrox produce lenses that give premium native glass like Sony G Master and Nikkor S lenses a close run for their money.

But the point I am making is that you shouldn’t splurge on a camera body because of its attractive sensor, only to then cheap out on the lens you’re going to pair it with.

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Here’s our expert pick of the best cheap lenses for your camera. And if you're all about the pixels, these are the highest resolution cameras you can buy right now.

I’m a writer, journalist and photographer who joined Digital Camera World in 2026. I started out in editorial in 2021 and my words have spanned sustainability, careers advice, travel and tourism, and photography – the latter two being my passions.

I first picked up a camera in my early twenties having had an interest in photography from a young age. Since then, I’ve worked on a freelance basis, mostly internationally in the travel and tourism sector. You’ll usually find me out on a hike shooting landscapes and adventure shots in my free time.