Comparing Olympus 4/3lenses to FX "Full Frame" offerings

Started Jan 25, 2014 | Discussions thread
Ian Stuart Forsyth
Ian Stuart Forsyth Veteran Member • Posts: 3,204
Re: Oh dear.

Tiger1 wrote:

Again. They will have the same per pixel noise of course. Noise per pixel is a relationship to the number photons being captured by photosites. The will be the same per photosite in the centre crop as in the FF shot. The crop will "appear" noisier because you have magnified the image and thus magnified any noise present.

Now answer these questions.

Identical cameras with identical FF sensor technology except for the fact one has 36 MP and the other has 24 MP. Both shoot at ISO 12800. Same shutter speed and aperture and lens.

Which one will exhibit more noise per pixel?

Why is there a difference as they both have the same amount of light hitting their sensors (remember its also 4 times what a FT sensor would receive!!!)?

Over to you...

The one that receives less light per pixel, but as a photograph they would share the same amount of noise and one would show slightly more detail.

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