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X100, Sony NEX5N or something else...

Drbee

Naperville, US
5927 posts

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"RE: X100, Sony NEX5N or something else..."

Drbee Silver Member Nikonian since 05th Aug 2004
Wed 18-Jan-12 03:03 AM

Hi Phil,

Sorry for the delay in getting back to you. In retrospect, I was having SAB problems for a while but the camera operation cloaked that a bit.

I started noticing some erratic exposure behavior. Typically extremely overexposed images on occasion. I would review the exposure data and the indicated f/stop seemed correct and the shutter-speed OK. I wasn't expecting a camera malfunction.

When in Auto/Program mode, it's somewhat difficult to catch the initial malfunctions - at least for me since I shoot so much in low-light. The camera program mode is biased so much toward f/2 that you can get a good picture with the aperture blades stuck at f/2. When the blades "stick" they stick at or near maximum aperture.

The real verification came with a series of exposures at a high fixed ISO taken of an evenly illuminated target. I started with an exposure reading for f/2 and 1/1000s and then began to decrease the shutter-speed, forcing the aperture to close. The meter reading called for the shutter to close, but the series of images was uniformly overexposed by one additional EV per shutter-speed step.

Seems obvious if you are expecting it.

Best Regards,
Roger

This is a hot, active topic! X100, Sony NEX5N or something else... [View all] , William Symonds , Sat 26-Nov-11 12:17 AM
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