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06-21-2011, 06:43 AM   #1
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Overexposure with fast lenses

Here's another newbie question for you guys!

I've noticed that my K5 works very well together with my slower DA lenses. My kitlens, my DA 16-45, DA 10-17 and the DA 55-300.

Strange thing is, with my faster lenses, the FA 50 f1.4 and the DA 35 f2.8 ltd, it suddenly overexposes.

I've been correcting his issue by adjusting the EV compensation to underexpose -1 and even -2. Only then correctly exposed pictures appear. This solution feels a lot like chimping. Which it is, I have to take a picture first, see what it looks like, and then adjust the EV compensation and take a corrected pic.

Please tell me what I'm doing wrong here.

06-21-2011, 06:52 AM   #2
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Does it happens at all the apertures or only at faster aperture? Have you fixed your ISO at higher value? It's possible that light is strong enough and shutter speed is not able to match it.
06-21-2011, 07:04 AM   #3
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QuoteOriginally posted by yusuf Quote
Does it happens at all the apertures or only at faster aperture? Have you fixed your ISO at higher value? It's possible that light is strong enough and shutter speed is not able to match it.
Thanks for you quick reply.

Yes, it happens at all apertures. Also with pictures where the shutter speed is easily able to match. Like 5.6 / 300sec / iso 200.

What do you mean with fix the iso at higher value? I did activate the iso noise reduction in the higher iso's yes.
06-21-2011, 07:32 AM   #4
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He means, are you taking photos at an ISO that is higher than needed? A few more details and even photos (with EXIF in tact) would probably help. Such as, what mode are you using?



06-21-2011, 08:05 AM   #5
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QuoteOriginally posted by Clavius Quote
Thanks for you quick reply.

Yes, it happens at all apertures. Also with pictures where the shutter speed is easily able to match. Like 5.6 / 300sec / iso 200.

What do you mean with fix the iso at higher value? I did activate the iso noise reduction in the higher iso's yes.
Nevermind, I was just wondering if ISO is too high that causing even highest shutter speed to be insufficient (often happens with me when I forget to reset ISO after night shooting).

Since this is not the case with you, you might want to share a few more details like mode, sample pictures.
06-21-2011, 08:34 AM   #6
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Well some lenses just need a little adjusment and some don't. Part of learning equipement.
06-21-2011, 09:39 AM   #7
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I've never tired FA50 1.4 myself, but my FA31 overexposes about 1.5EV. Other fast lenses I've tried (FA43, FA77, DA*55) seem just fine. I've tried 3 different FA31s, and they all overexpose the same amount. I guess it's lens and body combination issue. It's easy to adjust, so no big deal.
06-21-2011, 09:49 AM   #8
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QuoteOriginally posted by MaK5 Quote
I've never tired FA50 1.4 myself, but my FA31 overexposes about 1.5EV. Other fast lenses I've tried (FA43, FA77, DA*55) seem just fine. I've tried 3 different FA31s, and they all overexpose the same amount. I guess it's lens and body combination issue. It's easy to adjust, so no big deal.
Ok, just wanted to make sure it wasn't incorrect settings or something.

Thanks everybody!!

06-21-2011, 07:44 PM   #9
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I have a FA50/1.4. It doesn't overexpose on my K-5s
06-22-2011, 01:30 AM   #10
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My K5 also overexposes with my 31 Limited. At first I was a bit surprised, but then it is easy enough to adjust.
06-22-2011, 01:31 AM   #11
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Sticky aperture? Try at wide open, f1.4. If it exposes correctly wide open, it might be a sticky aperture. Maybe the K-5 wants to actuate the aperture faster than its predecessors (speculation).

Sincerely,
--Anders.
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