So a f/1.8 on a 1" sensor would still gather more light than a f/3.5 on an APS-C?

Started 6 months ago | Questions thread
PhotoTeach2 Forum Pro • Posts: 14,490
Re: Back to the original point:

FingerPainter wrote:

Bob A L wrote:

But the op's question was not about noise. It was about different sensors in low light.

When OP said "Does this mean the 1" would do better in low light?" what do you think he meant the 1" would be better at, if it wasn't noise performance and DR?

The first thing I (personally) think about is what SS I need to use, (preferably w/out increasing ISO).

I only think about noise if I indeed have to raise ISO, (w/ also reduced DR).

I see f/1.8 as 2-stops faster SS than f/3.5, (w/out increasing ISO w/ noise & DR concerns).

But if I am also changing sensor sizes, I realize I will have an inherently lower noise as a offsetting factor, (if noise has indeed become noticeably-objectionable on the smaller-sensor).

So w/ (possible) noise as a factor, the overall advantage drops to only about 1/3-stop.

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