Earlier quoted context omitted.
> Have you ever used a 35mm film camera? Yep. > The amount of light that’s let in depends entirely on the aperture diameter, not the size of the sensor. That’s wrong. The size of the sensor, the aperture size (and of course the distance between the two) are all factors that together on this. Saying the sensor size is the reason is also wrong, but the size of the sensor is a factor in the equation - and the sensor bei…
>That’s wrong. The size of the sensor, the aperture size (and of course the distance between the two) are all factors that together on this. For a given angle of view, the amount of light incident on the sensor depends solely on the diameter of the aperture (the absolute diameter, not the f number). You can see this visually in the comment I made here: https://news.ycombinator.com/item?id=33426540 If you really want…
The point is just that they have to balance DOF and brightness in their designs. It’s a multi-variable equation, and sensor size is one of the factors that constrains the options you have available all things considered.
Like you said
> once you fix the angle of view.
And of course they’re limited to relatively small apertures anyway.
> Because films with higher ISOs are unacceptably grainy for most uses.
Not in my experience! This is just nitpicking now.
We can keep getting more and more technical, but I think you understand how it works.
You’ve made your point. You don’t like gatekeeping. I’m not gatekeeping.