Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-09-2009, 12:11 PM   #16
Veteran Member
Pentaxor's Avatar

Join Date: May 2009
Location: Vancouver, B.C.
Photos: Gallery
Posts: 6,513
my question, what is the other difference between the S-M-C and the SMC Tak aside from the rubber ring?

how about their coatings and which generation is earlier? is the SMC Tak better than the Super-Multi-Coated Takumar? what does SMC stands for? if SMC stands the same as the S-M-C, what the heck was Pentax thinking naming a lens that might cause some confusion?

12-09-2009, 12:45 PM   #17
Moderator
Site Supporter
Blue's Avatar

Join Date: Jun 2008
Location: Florida Hill Country
Photos: Gallery | Albums
Posts: 17,212
QuoteOriginally posted by Pentaxor Quote
my question, what is the other difference between the S-M-C and the SMC Tak aside from the rubber ring?

how about their coatings and which generation is earlier? is the SMC Tak better than the Super-Multi-Coated Takumar? what does SMC stands for? if SMC stands the same as the S-M-C, what the heck was Pentax thinking naming a lens that might cause some confusion?
Basically, the cosmetics are different. However, there are some examples of even S-M-C lenses having different optical formulae. One example is the S-M-C 135mm f2.5. One with 5 elements in 4 groups (43802) and one with 6 elements in 6 groups (43812).

Generally speaking, the coatings on S-M-C and SMC lenses is the Super Multi Coatings in 7 layers. That said, they may have "improved" the formula over the years.


QuoteQuote:
From AOHC:

1971 - Super-Multi-Coating

World's first multi-layer anti-reflective coating on consumer lenses. This patented technology made possible high-quality wide-range zoom lenses.
All competitors owe Asahi Opt. Co. this technological breakthrough.


Last edited by Blue; 12-09-2009 at 12:58 PM.
12-09-2009, 03:14 PM   #18
Veteran Member
Nesster's Avatar

Join Date: Oct 2006
Location: NJ USA
Photos: Gallery
Posts: 13,047
From the AHOC website:
QuoteQuote:
When Asahi Opt. Co. introduced their Super-Multi-Coated Takumar lenses in 1971, there were many different reactions to this announcement. According to an article authored by Fabio Amodeo and published in September of 1972 by Photo 13 magazine, Nikon stated that they already employed multi-layer coatings (up to three or four) on some lens surfaces and Asahi was fooling photographers, since no more than 5 layers were technically possible. Also Canon and Leitz said they were developing a similar process, but 7 layers was far from being credible.
http://digilander.libero.it/aohc/selart07e.htm

Having used uncoated and single coated lenses, as well as being familiar with a couple of AUTO Takumars, I would be very surprised if Super Taks are only 'single coated'.

The breakthrough was in the number of coatings possible, and their combined effectiveness.

I would find it credible that later production incorporated the benefits of experience, thus the later lenses may have better coatings.
12-09-2009, 03:52 PM   #19
Moderator
Site Supporter
Blue's Avatar

Join Date: Jun 2008
Location: Florida Hill Country
Photos: Gallery | Albums
Posts: 17,212
This part of the article I find interesting from the AOHC article linked to by Nesster.

QuoteQuote:
It is believed that nearly all major lens makers (including Canon, Nikon and Zeiss) paid royalties to Asahi to make use of some part of the industrial process for laying thin anti-reflective compounds on glass elements at acceptable costs. Leica obviously distinguished itself by stating that multicoating was of little help and reducing the number of elements was better for flare control. Of course, when Asahi patents on multicoating expired many years later, they suddenly changed their minds and started using multicoating like all other manufacturers.
This is very interesting as well.

QuoteQuote:
As already reported in Spotmatic magazine No.4 (page 5), a comparative test about lens flare - authored by Maurizio Micci and published in 1974 by Fotografare magazine - among Super-Takumar, SMC Takumar and EBC Fujinon lenses was quite amazing. In fact the SMC Takumars scored only a bit better than the Super-Takumars, while the EBC Fujinons were outperformed by both lines of Asahi lenses. The wrong conclusion of the editor was that multi-coating was useless, since the then supposed most advanced coating (since Fujiís EBC had 11 layers) arrived last, while the obsolete Super-Takumars ranked second and very close to the winners (SMC Takumars). This is not to blame Mr. Micci, since we now have more information and can draw quite a different conclusion. In fact what was my suspicion when I wrote the above mentioned article had already been officially confirmed by Asahi Opt. Co (but I wasnít aware of that at the time): late production Super-Takumars were already multi-coated. It was probably just an experimental coating, maybe less than 7-layers, or maybe it was not on all air-to-glass surfaces, so that it didnít perform as well as the definitive Super-Multi-Coating. What about the poor flare performance of the EBC Fujinon lenses? I suppose that at that time Fuji had to hurry in making use of multi-coating technology, and their own process was still not tuned up. In fact a few years later Fuji developed their improved Super EBC, which is now considered an excellent (some would say the best) lens coating for photographic lenses.
Point being that the lens coatings during the Super Tak years probably evolved in both the formula, number of coatings and application techniques as well as to which surfaces got what. In other words, the very early Super Taks were probably coated very similar to Auto-Taks where as the last Super Taks were close to S-M-C taks.

12-31-2009, 01:57 PM   #20
Veteran Member




Join Date: Oct 2008
Photos: Gallery | Albums
Posts: 550
Does 50mm f1.4 Super Takumar/Super Multi Coated Takumar in 35mm Pentax SM Lenses - Used Cameras from Camera Repair dot Com fit on Pentax K-7???
12-31-2009, 04:40 PM   #21
Moderator
Site Supporter
Blue's Avatar

Join Date: Jun 2008
Location: Florida Hill Country
Photos: Gallery | Albums
Posts: 17,212
Yes. However, you will need a m42 to K mount adapter. I recommend a genuine Pentax adapter.
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!
aperture, coatings, k-mount, pentax lens, slr lens, smc, takumar
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Super-Takumar 28mm f/3.5; Super-Multi-Coated Takumar 135mm f/2.5 (US) deadwolfbones Sold Items 1 07-11-2010 09:08 PM
SMC Takumar VS Super-Multi-Coated Takumar 50/1.4 RolloR Pentax SLR Lens Discussion 5 05-08-2010 06:38 AM
For Sale - Sold: Super Macro Takumar 50mm, Super Takumar 200mm, F 35-80mm Lenses Nick Siebers Sold Items 4 02-01-2009 08:56 PM



All times are GMT -7. The time now is 06:44 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