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mattdm
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mattdm
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Fujifilm has an extended dynamic range mode, which is in some way linked to ISO. The X-Pro 1 has a sensor with a base ISO of 200; if I enable "DR 200%", the minimum possible ISO increases to 400, and if I go to "DR 400%", the minimum ISO becomes 800.

I can see — easily, in fact using the DR bracketing drive mode for comparison — that the increased ISO means more noise and less detail. But if I needed ISO 800 anyway for my exposure, is there any detriment in using the extended dynamic range mode?

If there isn't any downside, why isn't it always on when ISO is above the base? (There is an "Auto" setting, but I'm not sure if it simply does that, or if it has a more complicated heuristic taking the actual DR of the scene into account.)

Fujifilm has an extended dynamic range mode, which is in some way linked to ISO. The X-Pro 1 has a sensor with a base ISO of 200; if I enable "DR 200%", the minimum possible ISO increases to 400, and if I go to "DR 400%", the minimum ISO becomes 800.

I can see — easily, in fact using the DR bracketing drive mode for comparison — that the increased ISO means more noise and less detail. But if I needed ISO 800 anyway for my exposure, is there any detriment in using the extended dynamic range mode?

Fujifilm has an extended dynamic range mode, which is in some way linked to ISO. The X-Pro 1 has a sensor with a base ISO of 200; if I enable "DR 200%", the minimum possible ISO increases to 400, and if I go to "DR 400%", the minimum ISO becomes 800.

I can see — easily, in fact using the DR bracketing drive mode for comparison — that the increased ISO means more noise and less detail. But if I needed ISO 800 anyway for my exposure, is there any detriment in using the extended dynamic range mode?

If there isn't any downside, why isn't it always on when ISO is above the base? (There is an "Auto" setting, but I'm not sure if it simply does that, or if it has a more complicated heuristic taking the actual DR of the scene into account.)

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mattdm
mattdm
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If I need the higher ISO anyway, is there any downside in using Fujifilm's extended DR mode?

Fujifilm has an extended dynamic range mode, which is in some way linked to ISO. The X-Pro 1 has a sensor with a base ISO of 200; if I enable "DR 200%", the minimum possible ISO increases to 400, and if I go to "DR 400%", the minimum ISO becomes 800.

I can see — easily, in fact using the DR bracketing drive mode for comparison — that the increased ISO means more noise and less detail. But if I needed ISO 800 anyway for my exposure, is there any detriment in using the extended dynamic range mode?