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Olympus E-400 E-400 specific discussion.

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Old 12th April 2009
crimbo crimbo is offline
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Pixel peeping at various ISOs

Following on from the native ISO thread I thought I would see what I can get out of the E400
Set on a tripod, Vivitar series 1 70-210 (cost me equivalent of 3 months wages!) at 210mm at f5.6, measured the exposure at ISO 400 and then set manually.
As I dropped the ISO I lengthened the exposure as would be expected - I did not re measure. Even did the 'ISO 50' setting.
Pulled the raw images into Capture One 4.7. Did an 'auto' on the ISO 400 image, stripped off the sharpening and noise reduction. Transferred these settings to all the other images.

First thing to note is that the ISO 50 setting has the same gain as the ISO 100 setting so I had to add -1 stop to the exposure ...

ISO 400 full image

ISO 400

ISO 320

ISO 250

ISO 200

ISO 160

ISO 125

ISO 100

ISO 50 (-1 stop in software)

Okay so thats the data ... conclusions???
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