exposure tables ?

[handsomejackuk]

excuse my ignorance but i a assuming that a digital camera would be the same as an old type film SLR. and iso, speed, and apertures are the same...

i.e. f4 at 1/30 at iso 200 is the same as
f8 at 1/60 at iso 200... etc...


is this one exposure stop ? if so my camera does 1/3 stops

is there any sort of table that shows all the apertures and speeds, and iso values for cameras

is there a standard that is adhered too or is it different for all cameras...

what is the difference between the iso ratings ?

i understand with slr film that the higher the iso the more sensitive the film to light..and the more grain.. is this the same with digital sensor... and what is the difference between iso 100 and iso 200 is this 1 ev stop or is it more ?

sorry to ask so many questions but i am relating to manual old style film camera..

 

[Ysarex]

what is the difference between the iso ratings ?

i understand with slr film that the higher the iso the more sensitive the film to light..and the more grain.. is this the same with digital sensor... and what is the difference between iso 100 and iso 200 is this 1 ev stop or is it more ?

Yes -- 1 EV, the same for digital as for film. The difference then is in the image quality. As you increased ISO for film the grain increased. With digital as you increase ISO the noise increases. Film grain and digital noise have a lot in common as both interfere with your ability to render fine detail and faithful color.

Big difference: With film as you decreased ISO grain decreased and ability to render fine detail increased, but the film's ability to capture a full tonal range also decreased. With film you traded best possible tone response against rendition of fine detail. As a result film had a sweet spot -- say ISO 400 with 120 roll film (although some would argue ISO 400 with 4x5 sheet). No such trade-off exists with digital. The best image quality comes from the sensor's base ISO and any deviation from that degrades IQ.

Joe

 

[vipgraphx]

Why is this thread in the HDR forum???

:addpics:

 

[Helen B]

Big difference: With film as you decreased ISO grain decreased and ability to render fine detail increased, but the film's ability to capture a full tonal range also decreased. With film you traded best possible tone response against rendition of fine detail. As a result film had a sweet spot -- say ISO 400 with 120 roll film (although some would argue ISO 400 with 4x5 sheet). No such trade-off exists with digital. The best image quality comes from the sensor's base ISO and any deviation from that degrades IQ.

Joe

As we both know, there's a big difference, in terms of ability to 'capture a full tonal range', in the comparative behaviour of different films, and of one film pulled or pushed for use at different EIs. Don't you think that the latter is more like adjusting ISO on a digital camera, rather than switching films?

 

[KmH]

The approach to optimizing exposure is different for digital than it is for film

Optimizing a digital exposure we exposure for the highlights and let the shadows take care of themselves. That is opposite how film exposure is optimized.

ETTR

Exposing to the right - Wikipedia, the free encyclopedia

Optimizing Exposure