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07-12-2013, 11:19 PM   #61
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QuoteOriginally posted by Aristophanes Quote
These 1.2's just aren't a value for all but a tiny niche of shots. They never sold well, they have quirks and aberrations, all of which summarizes why they are so rare, and why the cost and arm and a leg.
nice comparison. food for thought

07-13-2013, 12:15 AM   #62
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QuoteOriginally posted by rawr Quote
Indeed. There are very few (maybe none) lenses in that category that are sharp wide open - eg look at the Canon 50 f1.2 resolution charts on lenstip.com. You'd only buy a lens like that for a very specific purpose.
Yes, for fun!

But hold on... From comparing the lens charts, I see that, when stopped down, the ultrafast Canon lens gets sharper beyond any of the FA43's capabilities.

Most ultrafast lenses do that. A 1.2 lens stopped down to 2 will be many times sharper then a 2 lens wide open. Which is for a third reason to want such a lens.
07-13-2013, 12:35 AM   #63
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I dunno if the Cosina 55/1.2 is in par with the Canon 50/1.2, but for less than 550USD i like this kind of bokeh :


Last edited by Zygonyx; 07-13-2013 at 04:57 AM.
07-13-2013, 08:48 AM   #64
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QuoteOriginally posted by carrrlangas Quote
I have no idea what subjective persuit is and donīt think anyone would like to persue something subjectively.

yes I can see that.



btw - Thanks for the "lecture" I already understand fully what the 'numbers' mean though.

07-13-2013, 08:51 AM   #65
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QuoteOriginally posted by Clavius Quote
Yes, for fun!

But hold on... From comparing the lens charts, I see that, when stopped down, the ultrafast Canon lens gets sharper beyond any of the FA43's capabilities.

Most ultrafast lenses do that. A 1.2 lens stopped down to 2 will be many times sharper then a 2 lens wide open. Which is for a third reason to want such a lens.

This is a good point. Personally I'm not a sharpness obsessive, but I do see that sharpness is a big deal for many photographers and you are right about stoppign down ultra fast lenses. my A50/1.2 is absurdly sharp at apertures smaller than around f/2.0
07-13-2013, 10:01 AM   #66
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QuoteOriginally posted by Clavius Quote
Yes, for fun!

But hold on... From comparing the lens charts, I see that, when stopped down, the ultrafast Canon lens gets sharper beyond any of the FA43's capabilities.

Most ultrafast lenses do that. A 1.2 lens stopped down to 2 will be many times sharper then a 2 lens wide open. Which is for a third reason to want such a lens.
1. Only marginally sharper, and once above 40lpmm the eye has trouble telling the difference At f/5.6 the FA43 is above the Canon....for $700+ less.

2. Only at the very centre is the Canon higher res. At the edges and on average across the frame, the FA43mm is superior ESPECIALLY wide open.

3. The original conjecture here was that the Canon was fast wide open. It is not. It is soft both in objective measure and even by the Lenstip written analysis.

Shallow DOF is fun, but it has practical limits and costs a fortune.
07-13-2013, 10:15 AM   #67
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Soft can be cool as well. Pentax used to sell soft lenses. F/FA 85mm F2.8 F 28mm F2.8. Softness is is not always very apparent in close-ups or in low contrast conditions. It's a characteristic that's not always negative. I like my s-m-c Tak's 50mm 1.4 softness wide open. Especially in portraits.
07-13-2013, 11:18 AM   #68
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Last edited by beholder3; 08-11-2013 at 07:40 AM. Reason: [deleted]
07-15-2013, 08:50 PM   #69
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QuoteOriginally posted by Aristophanes Quote
Shallow DOF is fun, but it has practical limits and costs a fortune.
Depends. I got my Nikkor 50/1.2 Ai for $250 shipped, and it's better than my Pentax-A 50/1.2 (which I got for $300).

07-16-2013, 11:36 AM   #70
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QuoteOriginally posted by D1N0 Quote
Soft can be cool as well. Pentax used to sell soft lenses. F/FA 85mm F2.8 F 28mm F2.8. Softness is is not always very apparent in close-ups or in low contrast conditions. It's a characteristic that's not always negative. I like my s-m-c Tak's 50mm 1.4 softness wide open. Especially in portraits.
don't forget the K85 f2.2





a most curious looking lens that I bought for collection, more than any other reason
07-16-2013, 07:42 PM   #71
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it should be a nice lens for those who want it. the end.
07-18-2013, 12:41 PM   #72
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QuoteOriginally posted by TimKierath Quote
it should be a nice lens for those who want it. the end.
But even the FA version behaves as a K lens AFAIK (regarding use on a modern DSLR).
07-18-2013, 01:45 PM   #73
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QuoteOriginally posted by detritus Quote
don't forget the K85 f2.2





a most curious looking lens that I bought for collection, more than any other reason
I didn't because I didn't know it existed Great for retro eighties playboy shoots I would think
07-18-2013, 07:15 PM   #74
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QuoteOriginally posted by thibs Quote
But even the FA version behaves as a K lens AFAIK (regarding use on a modern DSLR).
What?
You said FA, do you not mean PK or something?

It will have auto-aperture, I am fairly sure of that (the 85 does, the 35 does, and the 50 is only going to be NEWER than them both) - so it will behave as an A lens not a K or M lens.
07-18-2013, 10:27 PM   #75
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QuoteOriginally posted by TimKierath Quote
What?
You said FA, do you not mean PK or something?

It will have auto-aperture, I am fairly sure of that (the 85 does, the 35 does, and the 50 is only going to be NEWER than them both) - so it will behave as an A lens not a K or M lens.
nope. he's right.

SMC Pentax-FA 85mm F2.8 Soft Reviews - FA Prime Lenses - Pentax Lens Reviews & Lens Database

they are AF but they have no auto aperture.

makes perfect sense for a soft lens since the degree of softness is controlled through the aperture ring. u wouldn't use auto aperture for such a lens.
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