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11-08-2011, 12:12 PM   #151
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Thanks! 3 &4 are both f/1.4

11-08-2011, 01:22 PM   #152
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Awesome, thanks for the info! I want to try shoot at wide open with my SMC M28 or SMC M50 to try to better separate my background and subject much like you did in those images...any suggestions/tips? Also, how did you keep the subject so sharp when shooting wide open?
11-08-2011, 05:15 PM   #153
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No worries, I normally shoot my lens wide open about 95% of the time for better subject isolation. Theres no real tip for sharpness wide open, some lens are sharp wide open ,some lenses arnt. The DA*55 is very sharp wide open.
11-08-2011, 06:36 PM - 1 Like   #154
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A couple of things to keep in mind with regard to bokeh, depth of field, and focal length: First, the smaller the focal length, the closer you need to be to your subject in order to get nice out of focus areas. If you take a photo with a 28mm f/2.8 wide open at 10 feet from your subject, the out of focus areas are going to just look fuzzy. Take the photo at five feet away and the background will blur more nicely. If you use a 135mm f/2.8 wide open at 12 feet, you can get some nice out of focus areas. I really like my Rokinon 85 f/1.4 for longish portrait shots, and someday I'd love to have a 135 f/1.4. That would make for some really nice bokeh.

As for specific lenses, the FA 50 f/1.7 is also sharp wide open. It's no DA* 55 f/1.4, but it's pretty nice. My copy is a bit fungusy, so it suffers from some loss of clarity in high-contrast situations when wide open, but here's an example of it being sharp wide open, according to my definition:

Walking around campus where I work, I just pointed my camera at a group of people, focused and snapped.

Whole image:



100% crop:



11-08-2011, 07:15 PM   #155
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Pretty impressive - her name tag is very readable in the crop. Nice rendering, too.
11-08-2011, 08:31 PM   #156
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QuoteOriginally posted by Designosophy Quote
A couple of things to keep in mind with regard to bokeh, depth of field, and focal length: First, the smaller the focal length, the closer you need to be to your subject in order to get nice out of focus areas. If you take a photo with a 28mm f/2.8 wide open at 10 feet from your subject, the out of focus areas are going to just look fuzzy. Take the photo at five feet away and the background will blur more nicely. If you use a 135mm f/2.8 wide open at 12 feet, you can get some nice out of focus areas. I really like my Rokinon 85 f/1.4 for longish portrait shots, and someday I'd love to have a 135 f/1.4. That would make for some really nice bokeh.

As for specific lenses, the FA 50 f/1.7 is also sharp wide open. It's no DA* 55 f/1.4, but it's pretty nice. My copy is a bit fungusy, so it suffers from some loss of clarity in high-contrast situations when wide open, but here's an example of it being sharp wide open, according to my definition:

Walking around campus where I work, I just pointed my camera at a group of people, focused and snapped.
Agreed, excellent points there. And nice shot

Another with the DA*55-
11-08-2011, 09:50 PM   #157
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11-09-2011, 08:29 AM   #158
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QuoteOriginally posted by TOUGEFC Quote
No worries, I normally shoot my lens wide open about 95% of the time for better subject isolation. Theres no real tip for sharpness wide open, some lens are sharp wide open ,some lenses arnt. The DA*55 is very sharp wide open.
Thanks for the information! I'll be sure to try more shots wide open
11-09-2011, 08:31 AM   #159
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QuoteOriginally posted by Designosophy Quote
s for specific lenses, the FA 50 f/1.7 is also sharp wide open.
I'm hoping to get one of these once I finish college this May! Thanks for the info!
11-09-2011, 02:01 PM   #160
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QuoteOriginally posted by ekim89 Quote
I'm hoping to get one of these once I finish college this May! Thanks for the info!
It's a great lens, just be advised that it's not easy to CLA. I sent it off to Eric Hendrickson for cleaning, and he discovered that there is an internal lens group that is permanently sealed. So I'm stuck with fungus in mine, unless I can find a non-operational copy with clear glass and can get someone to swap out the lens group in question. I'm still downright happy with it, though.
11-09-2011, 04:07 PM - 1 Like   #161
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Some shots of my Nephew with the DA★55



11-09-2011, 04:38 PM   #162
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Taken on a warm & very bright day last January. *istD, Vivitar 135/2.8

11-12-2011, 06:13 PM   #163
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M50 f/1.4 wide open. It's still sharp, but a bit less contrast than the FA 50 f/1.7 wide open. I know it's not a great photo, but it's just for comparison. I'm going to cross-post to the 50mm thread.
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11-12-2011, 06:24 PM   #164
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K20D + Pentax F 50/1.4 @ ISO640


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Last edited by theunartist; 11-12-2011 at 06:39 PM.
11-13-2011, 12:41 AM   #165
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DA★55
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