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Old Jan 3, 2008, 7:40 AM   #1
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Ok I lied, I think soon ( before the summer at least ) I will get another lens, specifically a manual portrait lens.

I'd like something longer then 50mm, and with nice bokeh. So I was thinking of the Jupiter 85mm f 2.0 ( recommended here ) or the Pentacon 135mm f 2.8, both being screw mount.

I had once an adapter to K mount, that I can't find anymore, so I would need to get another one. Are they all good ( the 15$ on ebay ) or there are some kind to avoid?

Second, are there any equivalent lenses in K-Mount? I tried in the past the Takumar 135mm f 2.5, and I really didn't like it ( expecially the colours, very dull ).

Thanks

Giovanni
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Old Jan 3, 2008, 8:00 AM   #2
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Lando wrote:
Quote:
Ok I lied, I think soon ( before the summer at least ) I will get another lens, specifically a manual portrait lens.

I'd like something longer then 50mm, and with nice bokeh. So I was thinking of the Jupiter 85mmÂ* f 2.0 ( recommended here ) or the Pentacon 135mm f 2.8, both being screw mount.

I had once an adapter to K mount, that I can't find anymore, so I would need to get another one. Are they all good ( the 15$ on ebay ) or there are some kind to avoid?

Second, are there any equivalent lenses in K-Mount? I tried in the past the Takumar 135mm f 2.5, and I really didn't like it ( expecially the colours, very dull ).

Thanks

Giovanni
Hi,
Avoid the ones with a flange on the front that covers the body contacts, with these you lose infinity focus. If you search around here the subject has been well covered in recent months.
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Old Jan 3, 2008, 8:32 AM   #3
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This one is a decent one Lando!

http://www.bhphotovideo.com/c/produc...Universal.html

Dawg
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Old Jan 3, 2008, 9:34 AM   #4
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I think then when I go back to NY in march a visit to B&H is mandatory
Thanks

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Old Jan 3, 2008, 9:46 AM   #5
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geo,
the adapters from B&H and adorama are just fine as dawg stated. also at a great price minus shipping.. how about updating your profile to let people know where you are located.

roy
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Old Jan 3, 2008, 9:56 AM   #6
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Profile updated.
I'm in Rome, Italy, anyway.
But I go to NY a couple of times a year, since it's my wife's city, and often her relatives come to visit us, so my shopping is all in america. In Italy prices are more or less double.
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Old Jan 3, 2008, 10:22 PM   #7
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135mm f/2.8 lenses are probably the best value prime on the used market. There are plenty selling on ebay for well under $100. Personally, I do not think I would bother with a screw mount to K mount adaptor for a 135mm lens, just look for a K or KA mount.

Other possiblities would be a macro lens in the 90mm to 105mm range that could do dual purpose as a portrait lens. The new Pentax primes such as the 70mm and 77mm have excellent reputations as well.

Tim
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Old Jan 4, 2008, 2:08 AM   #8
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if you can recommend some really good 135mm f 2.8 manual in k-mount i would appreciate.

I only find lenses from sears or vivitar in that range, and i don't know if they are good.
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Old Jan 6, 2008, 10:23 AM   #9
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Vivitar, Soligor, Sears, and JC Penny lenses would all have been made by someone other company and rebadged. There were other companies that marketed lenses but did not actually make any of their own. In its early days, Vivitar had a reputation for marketing some excellent quality lenses.

In the depths of my lens buying addiction I actually have ended up with three 135mm primes. I do not have any complaints about any of them and I just ran outside to do a quick side by side comparison of the three:

Up first is the JC Penny. This one is a PKA mount:
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Old Jan 6, 2008, 10:24 AM   #10
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Vivitar 135mm. This is a K mount, recently arrived from Australia:


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