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04-10-2011, 05:15 PM   #1
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Vivitar tx 135mm 2.5

Hi all, I just got a hold of this Vivitar tx 135mm f2.5 with a k adapter included. There wasn't any reviews on it in the lens database, I was wondering if this lens is worth keeping or should I just sell it to buy a better 135mm lens? Although, I didn't pay much for it as it is.

Last edited by pencilnink; 02-04-2015 at 08:24 PM.
04-10-2011, 05:47 PM   #2
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the tx adapter for pentax K is actually pretty rare - I'm sure you could get a few bucks for it alone.
04-10-2011, 06:00 PM   #3
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I thought that was a pretty good lens. It has more flare than a Pentax but otherwise very close in sharpness. I'd rate it much better than a Takumar Bayonet 135/2.5. It's quite close to the SMC Pentax 135/2.5, same filter size, a slide-out hood which seems short, very good build quality, only 6 aperture blades. I think it's worth keeping and using. They don't get recommended a lot because you have to find the lens and adapter. As mentioned above, the adapter probably sells for more than the lens.

Comparison test here.
04-11-2011, 09:30 AM   #4
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Oh alright, looks like I'll be using it. For now at least, hehe.
I figured the adapter would probably be worth more than the lens. Ya the lens hood is pretty short, I was thinking of buying a longer hood for it since it'll help prevent flare as well.


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