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12-09-2015, 12:45 PM   #31
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QuoteOriginally posted by hoanpham Quote
(click to enlarge)
Can you make these public on Flickr or generate a Flickr guest pass ?

12-09-2015, 12:47 PM   #32
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OK, here's a fullsize (8MB) bad photo with my A50/1.2. Just shot it handheld, ISO 800. Check the sharpness on my taskbar icons, and the left side of the keyboard. The Cosina / Porst versions don't even come close (and I had both of them also). Of course, there's still lots of aberrations left...

http://www.pentaxian.nl/PeterJ/smca5012.jpg
12-09-2015, 01:18 PM   #33
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I seriously hope Pentax will produce a new 50 f1.2 AF
12-09-2015, 01:25 PM   #34
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Another unresized one. Just opened in ACR and saved with quality 12 (= maximum JPG quality). Focused on "1805" on top of the label.

http://www.pentaxian.nl/PeterJ/smca5012-2.jpg

12-09-2015, 01:33 PM   #35
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QuoteOriginally posted by kh1234567890 Quote
Can you make these public on Flickr or generate a Flickr guest pass ?
Moved to public. Mostly at f1.2. Enjoy :-)
12-09-2015, 01:35 PM   #36
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I take issue with those who say the 1.2 cosina's are not sharp
12-09-2015, 01:44 PM   #37
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QuoteOriginally posted by Billy Joe Quote
I take issue with those who say the 1.2 cosina's are not sharp
But for f/1.2 the DOF is awfully deep, don't you think?
12-09-2015, 02:05 PM   #38
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"Oops! You don't have permission to view this photo." That's what flickr says.

12-09-2015, 02:22 PM   #39
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It's not the field of a 1.2 lens to produce landscape shots!
Because of the small dof you will always find some regions that are not that sharp.

I had the K 1.2 and the Revue and the Porst (the last 2 because you could get them with film-slr as a kit-lens!)
The K was really sharp.
Better than A and FA 1.4!

As for those who take the FA for a comparison of sharpness:
The FA is well known not to be the best lens at 1.4!
The 1.7 has better sharpness wide opened then the 1.4 stopped down to 1.7!

The FA 1.4 has something different:
Special character (good for portraits) and (very) good sharpness from 2.8 on.
12-09-2015, 02:58 PM   #40
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Using a depth of field calculator you get a number of 105 meters as a hyperfocal distance at 1.2. So shooting a flat scene with objects removed further than 105 meters should not be a problem. Of course it does mean, that some of the foreground will be blurred, but if the main subject / subjects is at the hyperfocal distance, who cares ?
12-09-2015, 03:19 PM   #41
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I can't get my head around why one would shoot a landscape at 1.2...... for the most part. Similar test to a portrait with a fisheye.
12-09-2015, 03:30 PM   #42
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QuoteOriginally posted by noelpolar Quote
I can't get my head around why one would shoot a landscape at 1.2...... for the most part. Similar test to a portrait with a fisheye.
In this very case, A landscape at F1.2 is a nice way to check the lens sharpness across the frame. Besides, I frequently shoot landscapes / cityscapes in low light at 1.8 (Sigma 18-35) when I do not have a tripod with me.
12-09-2015, 04:06 PM   #43
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QuoteOriginally posted by Asahiflex Quote
OK, here's a fullsize (8MB) bad photo with my A50/1.2. Just shot it handheld, ISO 800. Check the sharpness on my taskbar icons, and the left side of the keyboard. The Cosina / Porst versions don't even come close (and I had both of them also). Of course, there's still lots of aberrations left...
It may be sharp but there is that veiling flare fuzzy glowy dreaminess, same as I get with the 50/1.4 wide open.
12-10-2015, 12:14 AM   #44
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I have 6-7 different fast 50mm f1.2 - f1.1. All of them glow at wide open, and still slightly glow at f1.4. All depends on the light condition.
If you want perfect f1.4, get a Summilux 50/1.4 Asph (and a body to use it).

A50/1.2 is best the Pentax 50mm at f1.2, then K version. With correct light condition, there is no different between them.

f1.2 is challenging. I am sure you will have a lot of fun with it. It took me years to use it correctly :-)
12-10-2015, 01:34 AM   #45
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I would say the results we see here doesn't come from f/1.2 setting but more from the lens characteristics. This is not the difference with f/1.4 that make theses lenses.

Basically on the pictures here the lens is certainily not super sharp but sharp enough on the part in focus. And it is very dreamy/hazy on the OOF areas.

To me the Fuji 56mm f/1.2 has a very different look, much more modern and much sharper too. But maybe you also don't get the dreamy look that objectively is an optical issue but that maybe is part of what make them unique.
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