Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-15-2022, 12:10 PM   #1
New Member




Join Date: May 2022
Posts: 3
Takumar 135mm F2.5

Hope somebody here can help me.

In a house clearance recently I came across an example of this lens.

Identifying marks are a serial / model number of 5573954, the name Asasi Optical. It's a bayonet fit. It's a manual lens

Is this an SMC lens ? I'm assuming it's Pentax. Does it have any particular value ?

TIA

Martin

Attached Images
 
05-15-2022, 12:16 PM   #2
Site Supporter
Site Supporter
c.a.m's Avatar

Join Date: Jan 2013
Location: Ottawa, Canada
Photos: Gallery | Albums
Posts: 3,565
Hi Martin,

Welcome to Pentax Forums!

There are plenty of user reviews at our lens review page: Takumar 135mm F2.5 Bayonet Reviews - Non-SMC Pentax Prime Lenses - Pentax Lens Reviews & Lens Database

- Craig
05-15-2022, 12:23 PM   #3
New Member




Join Date: May 2022
Posts: 3
Original Poster
Thanks Craig,

So this is not an SMC lens. It's ok, but not to the standard of Pentax branded SMC lenses.

Regards

Martin
05-15-2022, 04:41 PM   #4
GUB
Loyal Site Supporter
Loyal Site Supporter
GUB's Avatar

Join Date: Aug 2012
Location: Wanganui
Photos: Gallery | Albums
Posts: 4,922
QuoteOriginally posted by martinclayden Quote
Hope somebody here can help me.

In a house clearance recently I came across an example of this lens.

Identifying marks are a serial / model number of 5573954, the name Asasi Optical. It's a bayonet fit. It's a manual lens

Is this an SMC lens ? I'm assuming it's Pentax. Does it have any particular value ?

TIA

Martin
There seems to be some duds out there but judge your one on it's merits. I suspect you are going to find it is superb.
Most people make the mistake of thinking because it was an entry level lens it can't be any good. (but it can certainly be great )
An interesting facet of the reviews is if you look at the oldest page of reviews they average out with a score just over 6. But the newest page (#1) averages just under 9.
There seemed to be a subjective negativity about this lens in the beginning.
The good news is that means the price of them is still quite cheap last time I looked. I think still cheaper than a M42Takumar 135mm f3.5 but with the open performance of a M42 tak 2.5

05-15-2022, 08:07 PM   #5
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 22,754
I own a pristine copy. Itís an ok lens with good qualities but also some warts including purple fringing in high contrast. It isnít smc but is coated. It has some loss of contrast likely due to the coatings but can be sharp in the right circumstance.(these are pretty inexpensive on the whole)
05-21-2022, 10:49 AM   #6
New Member




Join Date: May 2022
Posts: 3
Original Poster
Many thanks for your replies
05-23-2022, 03:51 PM   #7
retired sw engineer
Loyal Site Supporter
reh321's Avatar

Join Date: Nov 2014
Location: South Bend, IN, USA
Photos: Gallery | Albums
Posts: 21,211
QuoteOriginally posted by UncleVanya Quote
I own a pristine copy. Itís an ok lens with good qualities but also some warts including purple fringing in high contrast. It isnít smc but is coated. It has some loss of contrast likely due to the coatings but can be sharp in the right circumstance.(these are pretty inexpensive on the whole)
Is it helped by some kind of filter - perhaps a polarizer?

05-23-2022, 05:31 PM   #8
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 22,754
QuoteOriginally posted by reh321 Quote
Is it helped by some kind of filter - perhaps a polarizer?
Iíve never tried. I donít recall anyone else mentioning it.
05-25-2022, 04:20 PM   #9
Pentaxian
ZombieArmy's Avatar

Join Date: Jun 2014
Location: Florida
Posts: 2,960
QuoteOriginally posted by UncleVanya Quote
I own a pristine copy. It’s an ok lens with good qualities but also some warts including purple fringing in high contrast. It isn’t smc but is coated. It has some loss of contrast likely due to the coatings but can be sharp in the right circumstance.(these are pretty inexpensive on the whole)
I think it's a qc thing. My copy doesn't purple fringe at all (or I'd have to really try), but it does have veiled flare due to the lack of SMC coatings. I find the lens to be a good performer overall at least with my made in japan copy.


Takumar 135mm F2.5 Bayonet Reviews - Non-SMC Pentax Prime Lenses - Pentax Lens Reviews & Lens Database


Can check out my review of it. The optics are certainly better in my opinion than the older 135s like the Pentax M or K.
05-25-2022, 07:17 PM   #10
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 22,754
QuoteOriginally posted by ZombieArmy Quote
I think it's a qc thing. My copy doesn't purple fringe at all (or I'd have to really try), but it does have veiled flare due to the lack of SMC coatings. I find the lens to be a good performer overall at least with my made in japan copy.


Takumar 135mm F2.5 Bayonet Reviews - Non-SMC Pentax Prime Lenses - Pentax Lens Reviews & Lens Database


Can check out my review of it. The optics are certainly better in my opinion than the older 135s like the Pentax M or K.
To be honest the purple fringing was in harsh light on an m43 camera come to think of it. I need to test more with something like my KP or Sony A7R3.
05-25-2022, 07:42 PM   #11
retired sw engineer
Loyal Site Supporter
reh321's Avatar

Join Date: Nov 2014
Location: South Bend, IN, USA
Photos: Gallery | Albums
Posts: 21,211
QuoteOriginally posted by UncleVanya Quote
To be honest the purple fringing was in harsh light on an m43 camera come to think of it. I need to test more with something like my KP or Sony A7R3.
To be honest, I was thinking even smaller than MFT - ďQĒ.
Iím always thinking of about that length - equivalent to about the same as 300mm on ďAPS-CĒ.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, lens, takumar 135mm, vintage
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
A comparison: Takumar 135mm f3.5 (preset) vs Super-Takumar 135mm f3.5 Dandarious Pentax SLR Lens Discussion 4 09-17-2021 09:59 PM
Takumar 135mm vs Super-Takumar 135mm Dandarious Welcomes and Introductions 10 08-29-2021 11:20 PM
Are the Pentax 135mm K f2.5 and Takumar 135mm f2.5 6 element lenses =? stemked Pentax SLR Lens Discussion 9 09-27-2018 08:46 PM
New Mitakon Zhongyi F2.8 135mm or ASAHI TAKUMAR K (BAYONET) MOUNT 135MM F/2.5 OldNoob Pentax SLR Lens Discussion 5 11-27-2013 08:56 PM
Which 135mm Takumar is Better, the 135mm/2.5 or the 135mm/3.5? zx-m Film SLRs and Compact Film Cameras 23 08-23-2010 05:59 PM



All times are GMT -7. The time now is 04:10 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top