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01-20-2013, 02:08 AM   #16
axl
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The SMC Pentax 50mm 1:1.2 (the original K series) is the best Pentax lens I've shot. Nothing else in K mount could quite match it slthough FA31 came quite close. And yes, I did own all 3 FA ltds, DA40ltd, DA*55, K55/1.8 FA50/1.4, F50/1.7.
It's not the easiest lens but once you'll work out how it behaves and you'll nail the focus the revards are huge. As was pointed out before though, the strong AA filters on K20, K-7/5, K-x and possibly K-r don't do it any favours at f1.2. On K10D and K200 this lens was magnificent and would expect it to trully shine on K-5IIs

My 2p

01-20-2013, 02:21 AM   #17
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QuoteOriginally posted by axl Quote
The SMC Pentax 50mm 1:1.2 (the original K series) is the best Pentax lens I've shot. Nothing else in K mount could quite match it
Have you had the opportunity to compare it
with the Voigtlaender Nokton 58/1.4
and the Zeiss Makro-Planar 50/2?
01-20-2013, 07:41 AM   #18
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Aside from all the technical reasons for getting a 50/1.2 lens let's remember we are talking about LBA here. The 50/1.2 comes with massive bragging rights.

Tom G
01-20-2013, 11:27 AM   #19
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QuoteOriginally posted by lytrytyr Quote
Have you had the opportunity to compare it
with the Voigtlaender Nokton 58/1.4
and the Zeiss Makro-Planar 50/2?
No I haven't, at least not meaningfully* but hence I wrote "the best Pentax lens" and not K mount lens.

I've never tried the Zeiss but did give the Nokton a quick go. It was rather unfair comparison in store. The K50 was on my K10D and Nokton was on the store's display Nikon D90. Might have the pics still somewhere. If I remember correctly the Nokton was sharper wide open but you'd expect from f1.4 against f1.2

01-20-2013, 11:53 AM   #20
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Make sure to get an aftermarket focusing screen with this lens or use live view + magnification. Otherwise you'll be left wondering why so many shots are out of focus.
01-20-2013, 04:11 PM   #21
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QuoteOriginally posted by lytrytyr Quote
Have you had the opportunity to compare it with the Voigtlaender Nokton 58/1.4 and the Zeiss Makro-Planar 50/2?
I have a copy of the Voigtlander Nokton 58mm f/1.4 SL in Nikon F mount which I commonly use on my Nikon D3s, I also use the 50mm Zeiss Makro planar f/2 on my D800E - and let me put it this way: I still use my 58mm f/1.2 Noct nikkor aspherical, because there are effects that you get at f/1.2 that no other lens can do. The Zeiss makro-planar lens is very,very sharp flat field focus* and it focuses down to 1:2. But as sharp as it is at f/2 you aren't going to see anything like the bokeh pyrotechnics you get from f/1.2 lenses. The Voigtlander 58mm f/1.4 SL II is an excellent lens, it has consistent sharpness across the frame even at f/1.4 - which is something the current Nikkor 50mm f/1.4 G fails at, miserably. I suppose the Voigtlander simply has a flatter focus plane than the Nikkor 50mm lens but one thing to be careful with is the Voigtlander 58mm f/1.4 lens is prone to flare - the supplied hood isn't that great.

*Which really isn't fair to the pentax SMCP-K 50mm f/1.2 because most ultrafast lenses tend to have a curved focus plane, even the Leica Noctilux 50mm f/0.95 ASPH has pronounced focal plane curvature - but not as bad as the pre-asph 50mm f/1.0 Noctilux.

Last edited by Digitalis; 01-20-2013 at 04:17 PM.
01-20-2013, 04:18 PM   #22
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QuoteOriginally posted by cali92rs Quote
Make sure to get an aftermarket focusing screen with this lens or use live view + magnification.
I don't use a magnifier, and I don't use an after-market focusing screen. My eyesight is good enough, thank you.
04-03-2013, 09:40 PM   #23
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lol - LBA finally got the best of me... to a certain point... I ended up purchasing a Revuenon 55mm 1.2 to play with.... still keeping my eyes on a pentax 1.2 but pricewise the revuenon looks like good bang for the buck

04-03-2013, 10:00 PM   #24
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QuoteOriginally posted by mholford Quote
lol - LBA finally got the best of me... to a certain point... I ended up purchasing a Revuenon 55mm 1.2 to play with.... still keeping my eyes on a pentax 1.2 but pricewise the revuenon looks like good bang for the buck
I also picked up a Revuenon recently, and it is very nice. Although I got it to shoot at 1.2 it does seem wickedly sharp stopped down so it is a good all-purpose 50 (or 55, actually). There was a K 50/1.2 that sold on ebay the other day that was less than I paid for the Revuenon, which is surprising...
04-03-2013, 10:07 PM   #25
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yeah... I think I was second in that auction... just beat out in the final seconds.... and yes, it went for less then typical for a non a-version of the lens...
but I picked up the revuenon for quite a bit less then that so I'm happy.... something fun to play with while I keep looking for a pentax 1.2
04-04-2013, 12:46 AM   #26
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QuoteOriginally posted by mholford Quote
Is the pentax 50mm 1.2 as good as it's prices on fleabay
I would say as a lens, it does not get any better and I would certainly not be without mine.

But do watch the prices, they've been creeping up a bit I notice recently.
04-04-2013, 12:48 AM   #27
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QuoteOriginally posted by tabl10s Quote
I haven't gotten around to using it yet, but carry it in my bag
That's no use at all, whip it out and play with it as they say, but be careful to whom you say that to.
04-04-2013, 01:00 AM   #28
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QuoteOriginally posted by kerrowdown Quote
That's no use at all, whip it out and play with it
Do that too much and you'll go blind.
04-04-2013, 01:28 AM   #29
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A neglected advantage of a ƒ1:1.2 lens is it's sharpness at stopped down apertures that are wide open for other lenses. A ƒ1:1.2 lens stopped down to 1.4 will be noticably sharper then a ƒ1:1.4 lens wide open.

Second neglected advantage is that it really looks very cool on your camera.

A disadvantage is that they are impossible to focus with a stock screen. And installing an aftermarket screen is a nightmare. (At least, it was to me!) It created disadvantages with slower lenses. But just using liveview instead solved it though, focussing is easy with that. But I would prefer to use the eye level VF.


QuoteOriginally posted by boriscleto Quote
Actually, there was a batch of Assembled in Vietnam 1.2s, they just weren't sold in the US. Who knows what Ricoh will do.
I can't seem to find any information on that. I'm interested in it because it may mean they still will do limited runs from time to time.

Last edited by Clavius; 04-04-2013 at 02:09 AM.
04-04-2013, 02:48 AM   #30
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QuoteOriginally posted by Clavius Quote
I can't seem to find any information on that. I'm interested in it because it may mean they still will do limited runs from time to time.
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/116557-new-pen...d-vietnam.html

At the time you could still special order a 250-600 as well...
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