Misc Takumar 135 f2.5 bayonet resolution chart dissapointing

Takumar 135 f2.5 bayonet resolution chart dissapointing · 06:37 PM

75 sharpen and some noise reduction , contrast in LR to try to make it look better. I see a lot of color fringing (CA?) Also does not seem very sharp to me. did i not nail focus? Does this look normal to you guys that own this lens? this is 3200 iso btw.

Adam · 08-26-2016, 06:43 PM

As a budget lens at the time, plenty of CA is to be expected. That said, I do see plenty of moire in the shot, so the sharpness can't be that bad

Venom3300 · 08-26-2016, 06:44 PM

Put it on a tripod and shoot it at 100ISO.

What aperture are these at? Wide open will be worse than stopped down

visiono · 08-26-2016, 11:15 PM

ok. i will do it again. yeah its at 2.8. my tripod is very flimsy so i might have had a bit of motion blur still. ok so where could the moire be coming from? the 50d in raw photo mode? i know the 50d has moire in lower rez, but this is a photo taken from 15mpixels.

nickthetasmaniac · 08-27-2016, 10:05 PM

Originally posted by visiono

75 sharpen and some noise reduction , contrast in LR to try to make it look better. I see a lot of color fringing (CA?) Also does not seem very sharp to me. did i not nail focus? Does this look normal to you guys that own this lens? this is 3200 iso btw.

Why are you shooting a test chart at 3200iso, especially given the 50d is a fairly old (in digital years) APS body that doesn't have particularly good noise performance?

That said, the Tak Bayonet 135mm doesn't have a great reputation... So yeah, wide open on an average lens at 3200iso on an old digital - I wouldn't be expecting much

If you want sharp from that era, look for a SMC-K 135/f2.5 - it's a totally different beast.

visiono · 08-28-2016, 12:47 PM

the smc 2.5 is hard to find in my country, i was aware of it. actually i found the f3.5 version regularly but i hesitated due to the speed. i guess i regret getting the takumar bayonet now.

**Moe49** · 08-29-2016, 01:32 PM

Originally posted by visiono

i guess i regret getting the takumar bayonet now.

Don't regret getting this lens.
Stop it down a couple of clicks, use a larger hood than the one it comes with,
and keep your back to any strong light source

Last edited by Moe49; 08-30-2016 at 02:48 PM.

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08-26-2016, 06:43 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,594	As a budget lens at the time, plenty of CA is to be expected. That said, I do see plenty of moire in the shot, so the sharpness can't be that bad Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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08-26-2016, 06:44 PM	#3
Venom3300 Veteran Member Join Date: Jul 2014 Posts: 714	Put it on a tripod and shoot it at 100ISO. What aperture are these at? Wide open will be worse than stopped down

08-26-2016, 11:15 PM	#4
visiono New Member Join Date: Aug 2015 Posts: 15 Original Poster	ok. i will do it again. yeah its at 2.8. my tripod is very flimsy so i might have had a bit of motion blur still. ok so where could the moire be coming from? the 50d in raw photo mode? i know the 50d has moire in lower rez, but this is a photo taken from 15mpixels.

08-27-2016, 10:05 PM	#5
nickthetasmaniac Pentaxian Join Date: Dec 2008 Posts: 2,361	Originally posted by visiono 75 sharpen and some noise reduction , contrast in LR to try to make it look better. I see a lot of color fringing (CA?) Also does not seem very sharp to me. did i not nail focus? Does this look normal to you guys that own this lens? this is 3200 iso btw. Why are you shooting a test chart at 3200iso, especially given the 50d is a fairly old (in digital years) APS body that doesn't have particularly good noise performance? That said, the Tak Bayonet 135mm doesn't have a great reputation... So yeah, wide open on an average lens at 3200iso on an old digital - I wouldn't be expecting much If you want sharp from that era, look for a SMC-K 135/f2.5 - it's a totally different beast.

08-28-2016, 12:47 PM	#6
visiono New Member Join Date: Aug 2015 Posts: 15 Original Poster	the smc 2.5 is hard to find in my country, i was aware of it. actually i found the f3.5 version regularly but i hesitated due to the speed. i guess i regret getting the takumar bayonet now.

08-29-2016, 01:32 PM	#7
Moe49 Loyal Site Supporter Join Date: Jan 2010 Location: Santa Cruz Mtns. Photos: Gallery \| Albums Posts: 874	Originally posted by visiono i guess i regret getting the takumar bayonet now. Don't regret getting this lens. Stop it down a couple of clicks, use a larger hood than the one it comes with, and keep your back to any strong light source Last edited by Moe49; 08-30-2016 at 02:48 PM.

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