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10-07-2013, 12:03 AM   #1
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Lenses for K-5, manual, fast, tele, 85-135?

Hi I have two fast lenses, 50mm 1.7 from Ricoh and 135mm 2.8 from Revue. I like them both. I read here that the 135mm/2.8 some lenses have low contrast, not very bright colors in bright daylight. My lense is unfortunately this, but it is okay. I bought it for low-light use anyway. I find it good for that. Maybe I will buy another one, and the contrast will be better. Now I want more fast lenses. I do not have infinite money. So budget lens recommendations would be great. I have owned my K-5 for a month now, I have not tried the autofocus yet. I like manual focus. I like to use it for photography and video. I think it is great for both (Pentax please, add manual ISO and shutter speed control for video!) I saw a thread here, a few months ago, someone sold (I think) a 85mm 1.7 or 105mm 1.7 (sorry, I don't remember the length) for less than $100, it had slight haze inside the lense but I believe for that price, not very expensive even without haze. He said it was a rare lens. How can you know about such lenses? There are so so many, if I never read that thread I would not even know it is possible to find such a lens for under $500. I wasn't even sure if they exist, because it is over 55mm. I ask for your help, alone I can never find out about all the lenses. I would like a lense that would get me closer than 50-55mm, for portraits and other low light photography. 50-55mm means you have to get too close 135mm is a length I like a lot. I like the 135/2.8, but 2.8 is only good when it is not too dark. It can do pretty low light well, but I want a larger aperture that can do low light better. So I am looking for 77-150mm (something in that range, not zoom, but if you now prime zoom for that price you can suggest. I think it doesn't exist...) (or longer but I think longer means more expensive haha) that is f/2.0 or lower. If you know a good lens that is 2.1-2.4 you can suggest it too (the only one I know is Takumar 105/2.4). Thank you Are there any lenses like this for under $300? (Cheaper is better haha) Used is okay and I will find the best price I can, if you think I can find it for this price or less please suggest it. Thank you

10-07-2013, 12:09 AM   #2
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I forgot! If lens+adapter is cheaper than k-mount lens, you can recommend, but with adapters infinity focus is lost? I would like to keep infinity focus. Does adapter reduce the light from the lens? I want all the light from the lens...
10-07-2013, 01:08 AM   #3
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I understand f/2 and lower is expensive... so maybe under $400? but i would like to spend as little as possible!
10-07-2013, 01:47 AM   #4
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Do you have hoods for the lenses? It can increase contrast a lot!

10-07-2013, 01:52 AM   #5
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QuoteOriginally posted by VisualDarkness Quote
Do you have hoods for the lenses? It can increase contrast a lot!
thank you for the advice! the 135 has a built-in hood that you can raise, I must admit... I think I shot with the hood down when I tried it during the day. I will try it again with the hood!
10-07-2013, 10:33 AM   #6
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It sounds to me like you want a Samyang/Rokinon/etc 85mm f/1.4.

85mm f/1.4 on Amazon

$250 brand new.
10-07-2013, 07:18 PM   #7
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QuoteOriginally posted by thornburg Quote
It sounds to me like you want a Samyang/Rokinon/etc 85mm f/1.4.

85mm f/1.4 on Amazon

$250 brand new.
yes! that is perfect! thank you so much! a good price for 1.4 and it is even aspherical!! that's exactly what i was looking for ^^ in case i want something longer later... do you know if there are longer lenses below f/2 (or max f/2) that don't cost $1000 or more?
10-07-2013, 07:37 PM   #8
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The longest lens I know of f/2 or below is the Nikon 200mm f/2. Much more common (but still rare!) are various 135mm f/1.8 lenses. Some of the older fully manual ones can be had for about $400-$500 used. If you can find one. Once you get above 135mm, anything faster than f/3.5 is expensive. Even f/2.8, which is relatively common.

Example of 135mm f/1.8 for less than $1000.

There's a Nikon mount one for even less, but it's much harder to adapt a Nikon lens than an m42.

10-07-2013, 07:39 PM   #9
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K (SMC) 135mm f2.5 is superb. I consider the 50mm f/1.7, the 135mm f/2.5 and the 28mm f/3.5 (of the Pentax lenses I have used) to be outstanding--independent of price, and yet they are quite reasonable in price. BTW photozone has a review of the 135mm f2.5.
10-07-2013, 07:49 PM   #10
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QuoteOriginally posted by thornburg Quote
The longest lens I know of f/2 or below is the Nikon 200mm f/2. Much more common (but still rare!) are various 135mm f/1.8 lenses. Some of the older fully manual ones can be had for about $400-$500 used. If you can find one. Once you get above 135mm, anything faster than f/3.5 is expensive. Even f/2.8, which is relatively common.

Example of 135mm f/1.8 for less than $1000.

There's a Nikon mount one for even less, but it's much harder to adapt a Nikon lens than an m42.
thank you!! m42 can be easily adapted but i didn't even know you can adapt nikon lenses on pentax... i don't want to try anything difficult! only what works (like m42, you can buy adapter...) I have noticed that finding older lenses is more of a problem than the price... the price is a matter of how much you WANT to pay, but finding a lens is fate...
QuoteOriginally posted by dms Quote
K (SMC) 135mm f2.5 is superb. I consider the 50mm f/1.7, the 135mm f/2.5 and the 28mm f/3.5 (of the Pentax lenses I have used) to be outstanding--independent of price, and yet they are quite reasonable in price. BTW photozone has a review of the 135mm f2.5.
I have revuenon 135/2.8, maybe i will exchange it for a 135/2.5 SMC... i find my 135/2.8 is not very good with contrast in bright daylight (the hood helps a lot but i would still like a better contrast and better colors, i think they are not as good as they can be... even with CPL, and you have to be careful to avoid CF in bright light, UV filter doesn't help. it is a good lens... but I believe SMC would be better
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