Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-01-2018, 09:36 PM   #1
Veteran Member
SunnyG.'s Avatar

Join Date: Apr 2017
Posts: 317
Re-coating Takumar bayonet lens!

I was searching on on Google and found that there are multiple lens re coating, polishing and restoration services available. So the thought came to my mind, Pentax has a couple of bayonet mount lenses with no coating at all. They are not so bad at all. So my question is, if these Takumar bayonet are recoated with a modern coating, will they give better results? Will they outperform their more well-known kin? If anyone has a Takumar bayonet, maybe they can do this experiment and let us know the result?

12-01-2018, 10:05 PM - 1 Like   #2
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 14,749
QuoteOriginally posted by SunnyG. Quote
I was searching on on Google and found that there are multiple lens re coating, polishing and restoration services available. So the thought came to my mind, Pentax has a couple of bayonet mount lenses with no coating at all. They are not so bad at all. So my question is, if these Takumar bayonet are recoated with a modern coating, will they give better results? Will they outperform their more well-known kin? If anyone has a Takumar bayonet, maybe they can do this experiment and let us know the result?
Meh... I'd say buy a Samyang at that point. I think also the SMC coated 135's are cheaper than recoating the single coated Tak Bayonet...
12-01-2018, 10:56 PM - 1 Like   #3
Veteran Member
SunnyG.'s Avatar

Join Date: Apr 2017
Posts: 317
Original Poster
QuoteOriginally posted by UncleVanya Quote
Meh... I'd say buy a Samyang at that point. I think also the SMC coated 135's are cheaper than recoating the single coated Tak Bayonet...
I wasn't talking about the value. I was talking about seeing this from the perspective of an experiment. And besides, samyang uses cheap plastic for most of it's budget lenses. Also the Takumar isn't coated. But on re coating, you have option of multi coating it.
12-01-2018, 11:18 PM   #4
Pentaxian
disconnekt's Avatar

Join Date: Oct 2011
Location: Riverside, CA
Posts: 790
Never knew there was those type of services available, this would be interesting to see the results if anyone decided to do it on an uncoated lens.

12-02-2018, 12:37 AM - 1 Like   #5
Pentaxian
ZombieArmy's Avatar

Join Date: Jun 2014
Location: Florida
Posts: 1,392
The bayonet lenses are multicoated, they are just not SMC. They already potentially outperform their equivalent lenses, and it largely depends on copy variation.


Check out the detail on the Tak Bayonet 135 2.5

https://farm5.staticflickr.com/4899/46121694501_596c7f16f9_o.jpg

Last edited by ZombieArmy; 12-02-2018 at 12:42 AM.
12-02-2018, 03:24 AM   #6
GUB
Loyal Site Supporter
Loyal Site Supporter
GUB's Avatar

Join Date: Aug 2012
Location: Wanganui
Photos: Gallery | Albums
Posts: 3,090
QuoteOriginally posted by ZombieArmy Quote
The bayonet lenses are multicoated, they are just not SMC. They already potentially outperform their equivalent lenses, and it largely depends on copy variation.


Check out the detail on the Tak Bayonet 135 2.5

https://farm5.staticflickr.com/4899/46121694501_596c7f16f9_o.jpg
+1 on this. Why tamper with them when they already rock. But agree that there must be extra large sample variation going by some peoples opinion of them
12-02-2018, 04:18 AM   #7
Veteran Member
SunnyG.'s Avatar

Join Date: Apr 2017
Posts: 317
Original Poster
QuoteOriginally posted by disconnekt Quote
Never knew there was those type of services available, this would be interesting to see the results if anyone decided to do it on an uncoated lens.
Yes it's readily available! Just search on Google!
12-02-2018, 04:19 AM   #8
Site Supporter
Site Supporter




Join Date: Mar 2009
Location: Gladys, Virginia
Photos: Gallery
Posts: 19,125
I think the cost would make it not worthwhile. There are a bunch of coated manual focus 135mm lenses out there and frankly you can find FA 135s for about 300 dollars or a bit less. I'd rather spend the money there than to coat a non-coated lens.

At the same time, if you have the money and you want to try the experiment, there is certainly no harm in doing it.

12-02-2018, 04:23 AM - 1 Like   #9
Veteran Member
SunnyG.'s Avatar

Join Date: Apr 2017
Posts: 317
Original Poster
QuoteOriginally posted by ZombieArmy Quote
The bayonet lenses are multicoated, they are just not SMC. They already potentially outperform their equivalent lenses, and it largely depends on copy variation.


Check out the detail on the Tak Bayonet 135 2.5

https://farm5.staticflickr.com/4899/46121694501_596c7f16f9_o.jpg
I think, since they don't have SMC, a person can get a modern multi coating and compare it to the SMC Takumar. And th
Since these lenses come cheap. Wouldn't it be interesting to see how modern multi coating is compared to smc?

---------- Post added 12-02-18 at 04:25 AM ----------

QuoteOriginally posted by GUB Quote
+1 on this. Why tamper with them when they already rock. But agree that there must be extra large sample variation going by some peoples opinion of them
What if it rocks more after modern multi coating?

---------- Post added 12-02-18 at 04:27 AM ----------

QuoteOriginally posted by Rondec Quote
I think the cost would make it not worthwhile. There are a bunch of coated manual focus 135mm lenses out there and frankly you can find FA 135s for about 300 dollars or a bit less. I'd rather spend the money there than to coat a non-coated lens.

At the same time, if you have the money and you want to try the experiment, there is certainly no harm in doing it.
Well if it's too expensive, then it won't be worthwhile. But it's around 100-150$ ballpark. Then it's quite doable.
12-02-2018, 04:43 AM   #10
Site Supporter
Site Supporter
IgorZ's Avatar

Join Date: Aug 2015
Location: Ottawa
Posts: 1,532
Interesting idea... Wondering though, can a small company make decent coatings?
12-02-2018, 07:32 AM - 2 Likes   #11
amateur dirt farmer...
Loyal Site Supporter
pepperberry farm's Avatar

Join Date: Dec 2014
Location: probably out in a field somewhere...
Photos: Gallery | Albums
Posts: 12,919
easy: buy one and send it in for the coating process, get it back, shoot, and report back...
12-02-2018, 08:09 AM   #12
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 14,749
QuoteOriginally posted by SunnyG. Quote
I wasn't talking about the value. I was talking about seeing this from the perspective of an experiment. And besides, samyang uses cheap plastic for most of it's budget lenses. Also the Takumar isn't coated. But on re coating, you have option of multi coating it.
They are coated, what made you think they weren't?
12-02-2018, 08:21 AM   #13
Pentaxian
Wasp's Avatar

Join Date: Mar 2017
Location: Pretoria
Photos: Gallery
Posts: 778
I have a Tamron 300mm f/5.6 in M42 mount that has lost bits of its coating on the front element. It was only $10 and the cost of restoring it would probably exceed its value. Interesting to know it can be done, though.
12-02-2018, 08:36 AM - 1 Like   #14
Pentaxian
Just1MoreDave's Avatar

Join Date: Feb 2007
Location: Aurora, CO
Photos: Gallery | Albums
Posts: 5,297
The SMC Pentax-A 135/2.8 is much less trouble. It's 4 elements, 8 blades, 1.2m minimum focus, 52mm filter, slide out hood, all the same as the Takumar Bayonet, plus a KA mount.
12-02-2018, 08:39 AM   #15
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 14,749
QuoteOriginally posted by SunnyG. Quote
I think, since they don't have SMC, a person can get a modern multi coating and compare it to the SMC Takumar. And th
Since these lenses come cheap. Wouldn't it be interesting to see how modern multi coating is compared to smc?

---------- Post added 12-02-18 at 04:25 AM ----------


What if it rocks more after modern multi coating?

---------- Post added 12-02-18 at 04:27 AM ----------


Well if it's too expensive, then it won't be worthwhile. But it's around 100-150$ ballpark. Then it's quite doable.
I would be seriously surprised if that is the cost. Each element has to be polished to remove the existing coatings and then recoated.

Some of the services I found only work on film lenses. This to me indicates $$$$
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!
bayonet, budget, coatings, cost, element, experiment, film, google, k-mount, lenses, money, multi, pentax lens, pm, post, slr lens, smc, takumar, value, variation, worthwhile
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
New to Vintage Lenses—Fungus in 135mm Takumar Bayonet lens? AAlfano Pentax SLR Lens Discussion 12 08-30-2018 11:40 AM
Super Takumar 35mm f2 (49mm) yellow coating Digiman69 Pentax SLR Lens Discussion 9 04-15-2012 05:44 PM
Super Takumar - info about coating (elements and layer) gemini Pentax SLR Lens Discussion 12 04-28-2010 01:39 PM
Compare the lens coating of Takumar-F 70-210mm and smc Pentax-F 70-210mm jcdog2006 Pentax SLR Lens Discussion 13 02-19-2010 08:16 AM
When is a Pentax bayonet not a Pentax bayonet albrechtnamatdurer Pentax SLR Lens Discussion 6 06-28-2009 09:35 PM



All times are GMT -7. The time now is 03:02 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