Is FF sensors going to slowly phase out?

Started Apr 11, 2013 | Discussions thread
EinsteinsGhost
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Re: it depends on your definition of 'slow'
In reply to forpetessake, Apr 15, 2013

forpetessake wrote:

RedFox88 wrote:

forpetessake wrote:

I was also talking about the collected light. DOF and light gathered follow the same conversion rules: f-stop multiplied by crop factor.

Sorry but this is incorrect.  You are actually only talking about "effective 35mm depth of field".

Sorry, but it was correct. Both DOF and light flux scale the same way.

It's the effective aperture, not the f-stop that determines both DOF and light: http://www.josephjamesphotography.com/equivalence/#1

Well that guy is known on here for boasting about himself and his belief.  He's had to use several accounts on here because of how many time he's been banned for his posting behavior.  Just because it's a page on a website does not mean the information is valid.

Have to disappoint you, what 'that guy' has written is absolutely correct. It's simple physics. And there isn't really anything new here. Those who worked with telescopes knew for ages that f/stop means nothing in light gathering, the lens (or mirror) collects light with its aperture:F-ratio myth

The f-stop determines the brightness, but you need to integrate over the area to get the total light, collected by the lens, and that's exactly what determines the photon noise part of S/N ratio.

Nope. Larger sensor uses more light (for a wider FOV), but the light falling on the sensor over the same surface area as a smaller sensor doesn't change.

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