Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-04-2011, 05:02 AM   #1
Forum Member
aheadfordinci's Avatar

Join Date: Jan 2011
Posts: 99
Super Takumar 1:1.4/50 8 elements on Spotmatic F?

Sorry for the possibly dumb question; i have tried to find the answer myself reading through the forum and elsewhere, but i haven't found anything clear; it may just as well be because it's a dumb question. : /

I would just like to ask confirmation whether the earlier 50mm Super Takumar with 8 elements, with the protruding one when focusing to infinity can be safely mounted on the Spotmatic F or it may touch the mirror of the latter.

Do somebody have experience on this coupling?

01-04-2011, 05:39 AM - 1 Like   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,948
I'm pretty sure that there won't be any problems- the Spotmatic was designed for these lenses, after all!

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

01-04-2011, 06:40 AM - 1 Like   #3
Pentaxian
Arjay Bee's Avatar

Join Date: Sep 2006
Location: Bamaga, QLD
Photos: Gallery | Albums
Posts: 2,880
You are right to be cautious - the ESII manual specifically says it cannot use this lens and it is from the same era as the F and uses the same open aperture metering system.
However a quick skim read of the manual http://www.cameramanuals.org/pentax_pdf/pentax_spotmatic_f.pdf
has no such caution and the sumary on page one paragraph 3 states that it is compatible with the complete lineup of Asahi Pentax lenses and accessories.

Put the shutter speed of the camera body on Bulb 'B', open the back of the body and mount the lens and carefully check the mirror movement to see that it clears the rear element when you depress the shutter button.

As Adam says - you should be right.
01-04-2011, 06:50 AM - 1 Like   #4
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,312
although the rear element is convex and protrudes from the back of the lens, If you look at the SMC Tak lenses the aperture coupling also sticks out, and not all rear elements protrude the same amount. In fact, my SMC Tak 35mmF2 actually protrudes deeper into the mirror box than my Super tak 50mmF1.4 (8 element version)

While I don't have a spotmatic F or ES II, I passed on the latter for $25 with a 50mmF1.4 lens in my pre M42/LBA days (oops) I see no reason why there would be an issue.

I do recall some lenses in the late 1970's hitting the mirror, but I think they were fisheyes.

01-04-2011, 07:00 AM   #5
Forum Member
aheadfordinci's Avatar

Join Date: Jan 2011
Posts: 99
Original Poster
Thank you guys!
Arjay, that was a great suggestion; i've tried right now and the lens fitted perfectly; there's probably no more than 1mm between the lens and the mirror run, but the rear element don't touch it.

later i'll go buy a couple of rolls to test it, but looking through the finder, i've noticed that my copy of the 50 is noticeably worse to focus than my SMC 1:1.8/55. To be sure, i need to test it on digital, as soon as the adapter i've ordered arrives...

thank you again!
01-04-2011, 07:06 AM   #6
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,312
QuoteOriginally posted by aheadfordinci Quote
Thank you guys!
Arjay, that was a great suggestion; i've tried right now and the lens fitted perfectly; there's probably no more than 1mm between the lens and the mirror run, but the rear element don't touch it.

later i'll go buy a couple of rolls to test it, but looking through the finder, i've noticed that my copy of the 50 is noticeably worse to focus than my SMC 1:1.8/55. To be sure, i need to test it on digital, as soon as the adapter i've ordered arrives...

thank you again!
the shallower DOF may be part of this, I have no issue focusing my copy but I am using a split image finder
01-04-2011, 09:56 AM   #7
Forum Member
aheadfordinci's Avatar

Join Date: Jan 2011
Posts: 99
Original Poster
QuoteOriginally posted by Lowell Goudge Quote
the shallower DOF may be part of this, I have no issue focusing my copy but I am using a split image finder
I don't think it's that: I've noticed the same difficulty in focusing at f/5.6 in respect to the 55mm.
it may be it could use a cleaning...
01-04-2011, 11:56 AM   #8
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,312
QuoteOriginally posted by aheadfordinci Quote
I don't think it's that: I've noticed the same difficulty in focusing at f/5.6 in respect to the 55mm.
it may be it could use a cleaning...
maybe your eyepeice diopter is not set?

I have no issue at all focusing mine

01-04-2011, 12:06 PM   #9
Forum Member
aheadfordinci's Avatar

Join Date: Jan 2011
Posts: 99
Original Poster
QuoteOriginally posted by Lowell Goudge Quote
maybe your eyepeice diopter is not set?

I have no issue at all focusing mine
Sorry, it's possible i'm missing something, as it's the first time I use a reflex; but why the same diopter would focus perfectly the SMC 55 and not the Super Tak. 50? Still the lens looks clean :/

I need to test it on a different body, thing that i'll do next week, possibly!
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!
elements, k-mount, pentax lens, question, slr lens, spotmatic, takumar
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Spotmatic F and Super Takumar 55mm F2: Opinions? (And mild excitement hence posting!) Jetsam1 Pentax Film SLR Discussion 2 09-20-2010 03:48 PM
For Sale - Sold: Spotmatic, 18-250mm, Super Takumar 55mm, A50mm (Worldwide) Aegon Sold Items 3 09-19-2010 07:04 PM
Super Takumar - info about coating (elements and layer) gemini Pentax SLR Lens Discussion 12 04-28-2010 01:39 PM
For Sale - Sold: Spotmatic F (w/CLA) and Super-Multi-Coated Takumar 50mm f/1.4 Nick Siebers Sold Items 5 02-06-2010 05:40 AM



All times are GMT -7. The time now is 05:42 PM. | See also: NikonForums.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