What really makes big sensors produce more appealing images? *Serious*

Started 5 months ago | Discussions thread
bobn2
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Re: What really makes big sensors produce more appealing images? *Serious*
In reply to D Cox, 5 months ago

D Cox wrote:

The main difference is not the size of the sensor, but the size of each pixel. Bigger pixels have less noise. (Noise also goes down over the years as sensor technology improves.)

This is not the case. By and large, bigger pixels produce more noise.

So a 16 Megapixel sensor of a certain size will have less noise than a 16 Megapixel sensor of half the size.

The number of pixels doesn't so much count - it's the size of the sensor, and thus the amount of light that it collects for a given exposure. If you choose to give a FT sensor four times the exposure, it will produce a result just like an FF sensor. Of course, assuming they both have the same base ISO, you can't give the FT sensor four times the exposure, because its going toblow all the bright bits.

Less noise means better tonal gradation and cleaner colours, or being able to set higher ISOs and still have acceptable quality.

What means being able to set higher ISOs is getting four times the light for the same exposure, or behaving like FT does at four times the ISO.

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Bob

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