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03-02-2013, 01:36 PM   #1
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43mm 1.9 Limited best sharpness?

What's the best aperture for the sharpest photos with the 43mm Limited?

I think I might have gotten a soft copy.

Thanks!

-Chuck

03-02-2013, 01:46 PM - 1 Like   #2
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According to photozone's review, 5.6 seems to be the sweet spot.
03-02-2013, 02:04 PM   #3
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What are you comparing it to? Also, at f1.9 the DoF is very thin, so things may "appear OoF".
03-02-2013, 02:32 PM - 1 Like   #4
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I was going to ask what camera you're using, but I see K5IIs in your signature. I recently upgraded from a K20D, now to a new K5II. The FA 43 was a really good lens on the K20, but now it's hands-down my absolute favorite lens I've ever used or owned. (And I've gone through quite a few.) It's funny that I've used far more expensive lenses, too, but nothing has beaten the image quality of the FA 43 yet.

However, this past Fall I did have some disappointing results with it, while on a brief trip to Copper Harbor and around Michigan's Keewenaw Peninsula, in the U.P. That was still using the K20D. So when I got home and ran the photos through LightRoom, I was disappointed at a lack of detail at infinity. It turns out the in-camera AF adjustment had somehow been changed. (Which was very strange how that could've ever happened.) Every lens was reset to "Zero", and the camera itself was set to "- 2".

Is it possible that something like that is going on? I find the FA 43 very sharp, and quite often use it for full-body or 3/4 length portraits, shooting at f2.0 - f2.8. One problem encountered there, is that if one needs fill flash, the shutter speed needs to be knocked way down. For that, a B+W CPL works perfectly. Otherwise, I might suspect you've gotten a bad copy, because it should be sharp. FWIW, I was also pleasantly surprised with the new K5II, as far as lens calibration. Whereas the K20D needed some adjustment one way or the other, for most lenses, so far the K5II has been spot-on, no adjustments required whatsoever. And the AF is very quick and accurate, the results are great. Definitely a worthwhile upgrade! Good luck, hope you can get to the bottom of the problem.


Last edited by NeverSatisfied; 03-02-2013 at 02:52 PM.
03-02-2013, 02:44 PM   #5
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Here are the results from Yoshihiko's lens test using a film camera. Looks like f8 & f11 are best.

Phil.
Attached Images
 
03-02-2013, 02:47 PM   #6
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Ok thank you. I will post some images I took today when I get home.
03-02-2013, 03:00 PM   #7
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QuoteOriginally posted by gofour3 Quote
Here are the results from Yoshihiko's lens test using a film camera. Looks like f8 & f11 are best.

Phil.
But diffraction hits earlier on APS-c.
03-02-2013, 05:44 PM   #8
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Here is a processed image, that came out nice, but you can see at !00% crop, it's not sharp.

1/15 - f2.8 - ISO 200 -


Last edited by ChuckB28; 05-20-2014 at 10:18 AM.
03-02-2013, 05:59 PM   #9
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It looks almost like slight motion blur. I guess it's hard to be still enough for 1/15 as a model?
03-02-2013, 06:08 PM - 1 Like   #10
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Yea I'd like to see the same shot at a faster shutter speed. I agree with Visual Darkness, shake reduction might not be enough given the situation.
03-02-2013, 06:17 PM   #11
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Looks like you are correct. I just found another shot, same settings and it is quite sharp.

I'll have to raise my ISO a bit me thinks.

Last edited by ChuckB28; 05-20-2014 at 10:18 AM.
03-02-2013, 06:20 PM   #12
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That one looks really sharp instead!
Edit: That's why Exif data is helpful when troubleshooting!
03-02-2013, 06:34 PM   #13
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Exif data? lol sorry newbie
03-02-2013, 06:35 PM   #14
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Full shot...

Last edited by ChuckB28; 05-20-2014 at 10:19 AM.
03-02-2013, 06:36 PM   #15
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You wrote "1/15 - f2.8 - ISO 200" and it solved the mystery.
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