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Thread started 07 Oct 2006 (Saturday) 22:02
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Pentax K-mount lens on EOS 350D

 
short.cipher
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Oct 07, 2006 22:02 |  #1

I have successfully mounted a Pentax-A f/2 50mm lens on my 350D using an adapter from eBay seller phototools24 ( http://stores.ebay.com​/phototools24 (external link) ). The seller's instructions advised that the aperture coupling lever projecting from the rear of the Pentax lens should be removed or cut off, but I was reluctant to do this. Although various FAQs (including this forum) say that the EF-S mount gives sufficient clearance for the aperture coupling lever, I pressed the shutter with some trepidation. Happy to report that the mirror didn't shatter and the lens works perfectly (with manual focus and aperture setting, of course).
Chris Jones




  
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BruceC
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Oct 07, 2006 22:07 |  #2

very cool. I like to hear about different lens solutions.


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Elbee19
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Oct 07, 2006 22:08 |  #3

I certainly can appreciate the intuition here, however I'm struggling to understand the reasoning someone would want to go through all of this when Sigma, Tamron, Tokina, AND Canon all have lens that are designed to fit the Canon cameras? At least I'm sure there is someting between those 4 that is equivalent to the lens you have mentioned.

To each his/her own, but boy this sounds like a unnecessary stress to me!


Cheers,
LeBaron
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Canon 1DMKiii/5D/40D/30D | Canon EF 70-200 mm f/2.8L IS USM | Canon 17-40 F4L USM | Canon 18-55mm F3.5-5.6 | Canon 50mm 1.8

  
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short.cipher
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Oct 07, 2006 22:26 |  #4

Elbee,
The rationale is that I own various lenses including Nikon and Pentax M42, as well as Pentax K, and am interested in comparing their performance. It's said that some of the older glass, available cheaply second-hand, outperforms modern lenses. The 350D serves as a perfect test bed for checking this theory...




  
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BruceC
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Oct 07, 2006 22:30 |  #5

yeah I just saw a M42 adapter in ebay too, for just $7.99 USD. Post some pictures sometime with this adapter short.cipher.


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BruceC
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Oct 07, 2006 22:38 |  #6

I have been looking on ebay at different M42 mount lenses and they have some cool cheap ones. 135 F2.8 for like $50. Then a 200 F3.5 for about $70 shipped. Calm down there Bruce. calm down.


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KevC
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Oct 07, 2006 22:41 |  #7

5D has reported issues with some older MF lenses even with EOS adaptors. Larger mirror smashing...


Too much gear...
take nothing but pictures .... kill nothing but time .... leave nothing but footprints

  
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Elbee19
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Oct 08, 2006 11:52 |  #8

short.cipher...I knew you had to have a very good reason and your rationale makes perfect sense. I just couldn't see the benefit but now that I have been enlightened with your situation I understand.

Keep us posted on your findings regarding the performance of the older lenses with the newer stuff! ;)


Cheers,
LeBaron
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Canon 1DMKiii/5D/40D/30D | Canon EF 70-200 mm f/2.8L IS USM | Canon 17-40 F4L USM | Canon 18-55mm F3.5-5.6 | Canon 50mm 1.8

  
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Tyreman
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Oct 08, 2006 12:04 |  #9

Is probably a neat job fabricated idea and the personal feeling of success but then maunal focusing on an Canon EOS functioning designed camera with a odd lens configuration IMHO I can see no point to it.
But its good you got it to work for what you need.:)


Cambridge, ON.

  
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beholder
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Oct 08, 2006 20:13 |  #10

It would be a great combination if the viewfinder on the 350D was not so small. :(
This would be, of course, a "little" annoyance that could be easily be forgotten if the dumb "no canon ef chip, no beep in MF mode to assist focus" was not a issue in canon cameras.

I had a Pentax-FA 100mm Macro 2.8 that I could keep using the ring but... it was sold, and thanks to that a new Sigma 24-70 2.8 is on is way... Hope to sell the 28-200 too and get the Sigma Flash...

It's was a pity that Pentax never released a decent SLR until now... They have quite nice and affordable glasses. Probably would never trade my gear for Canon.
But, in the other hand you can't blame me... I'm no regrets concerning this change. Very happy Canon user :D

My 2 cents!
André


EOS 30D // EOS 1D MARK III // EF-S 10-22 // Canon 24-70 L // Canon 70-200 f/4 L
Post-processing: Apple MacMini G4 + Fancy 22" LCD // Apple Powerbook G4 17" // Photoshop CS 3
Check: Photo + Blog (external link)

  
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Pentax K-mount lens on EOS 350D
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