Shutterbug Strasse

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Re: Exposure question

Posted by orejones on March 9, 2006 at 03:00:14:
Good evening Paul,
That´s a pretty extreme case: a very dark coloured object, against a highlighted background... What´s the brightness ratio betwen both: a few thousand times?
Your camera´s sensor is not prepared to handle that much information. Fuji was able to somewhat deal with that problem by developing a sensor with two different photodiodes (different sizes, different sensitivity) at each photosite: that approach gives you a big RAW file, with info about highlights and shadows being better handled.
In the good old days of chemical photography, you could get a wide latitude by choosing the right slide film. And, in B/W, you still could go further by choosing the right developer..., none of which are you allowed to do in digiphoto.
If you look at the page in the link, you´ll find a more detailed explanation. Don´t forget to look at the pictures in the "Samples"
Anyhow, RAW files will give you a wider latitude than JPEG. And Photoshop, when properly used, can do some very good things...
Regards
BF