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

PhotoTeach2 wrote:

FingerPainter wrote:

PhotoTeach2 wrote:

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).

That's nice. What relevance does this have to the question I asked Bob A L?

Bob made a claim about what this thread was not about, so I asked him to interpret what OP had said in the OP.

My post consisted of a simple question (addressed to Bob A L) and nothing more. I find it interesting that both you and Bob responded to my post but neither of you answered the question. Instead you both decided to tell us what you do and don't care about yourselves.

Gents, this thread isn't about you or your preferences. Save the gratuitous information for threads that seek such opinions.

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.

The OP asked the advantage of f/1.8 over f/3.5, (2-stops SS).

He asked the advantage of 1"-type over APS, (almost 2-stops "noise"). But "noise" may not be a factor until it becomes "noticeably-objectionable".

He did not separate them as you are doing. The scenario he presented was f/1.8 on 1” and f/3.5 on Apsc and in that scenario there is NO 2 stop advantage. You keep making this objectively wrong statement and it’s helping no-one.