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artemapei · 12-16-2009, 07:12 AM

I've seen it on our photomarket today (in China). Do you think it'll keep the infinity for pentax lenses while being used on canon bodies?

wlachan · 12-16-2009, 08:15 AM

I don't think others will know cos there are many generic ones on the market. The best quality I am aware of is by Rayqual Made in Japan. It is also being sold by Kindai. It is designed for APS-C however.

mount adapter

artemapei · 12-16-2009, 08:46 AM

as far as i know EoS has very close working gap with canon - so it makes almost impossible to make correct adapter for FF with PK lenses - ONLY for crop. that's why I'm asking - if it's theoretically possible.

**cheekygeek** · 12-16-2009, 10:54 AM

I'm no Canon expert, but I believe one must be more specific than saying "EOS".

Quote:

Sadly it also appears that it isn’t possible to make adapter rings that let you mount Pentax K (bayonet mount) lenses on EOS cameras with EF lens mounts. The Pentax K diaphragm coupling lever physically interferes with such a possibility. So you’d have to modify the lens (or the camera) to make such a conversion possible.

Note that this does not apply to cameras compatible with the EF-S mount. The design of the EF-S mount, with its smaller mirror box thanks to the 1.6x crop factor, coincidentally permits the use of such lens adapters.

Possible and practical are not necessarily the same, however. And regarding a specific ebay seller... the way they seem to keep disappearing and reappearing would make me leery. YMMV

And shouldn't you be asking this in a Canon/EOS forum???

cousinsane · 12-16-2009, 11:09 AM

Like wlachan said, you can only adapt K-mount lens on canon APS bodies. The aperture lever will hit the mirror on a canon FF body.

artemapei · 12-16-2009, 08:46 PM

i see. it's not an infinity, but mirror problem with EF.
thanks. I'll use it only with croped EOS

yeatzee · 12-17-2009, 02:17 PM

Instead of starting a new thread, my friend (a canonite) has become envies of a few of my lenses and wants an adapter to enable her to use them. Where exactly can she a buy a *good* quality one?

Last edited by yeatzee; 12-17-2009 at 06:38 PM.

artemapei · 12-18-2009, 04:41 AM

Originally posted by yeatzee

Instead of starting a new thread, my friend (a canonite) has become envies of a few of my lenses and wants an adapter to enable her to use them. Where exactly can she a buy a *good* quality one?

Adapters: Leica R or Nikon F to EOS*

rhodopsin · 12-18-2009, 11:47 AM

Originally posted by artemapei

I've seen it on our photomarket today (in China). Do you think it'll keep the infinity for pentax lenses while being used on canon bodies?

most PK-EOS adapters available today permit infinity focus. if the description states the adapter can "infinity focus" it probably does.

there are two types. one mounts the lens on the body in normal position with focus scale on top. the other mounts the lens with focus scale on the side, which moves the rear-protruding part of the lens to the side to prevent interference with the mirror; since some PK lenses protrude to the rear more than others the side mount can permit use of those more protruding that are impossible to mount using the first type of adapter.

PK-EOS adapters are very thin, only 1.5mm, so use of quality material such as brass or a hard alluminum alloy is a plus.

ilya80 · 12-18-2009, 12:48 PM

Originally posted by rhodopsin

there are two types. one mounts the lens on the body in normal position with focus scale on top. the other mounts the lens with focus scale on the side, which moves the rear-protruding part of the lens to the side to prevent interference with the mirror;

Are you saying there is an PK-EOS adapters out there that allow using K mount lenses on a 5D body without mirror interference, and allow focusing to infinity at the same time??

A prooflink would be most welcome!

Looking forward to your reply.

rhodopsin · 12-18-2009, 12:55 PM

Originally posted by ilya80

Are you saying there is an PK-EOS adapters out there that allow using K mount lenses on a 5D body without mirror interference, and allow focusing to infinity at the same time??

A prooflink would be most welcome!

Looking forward to your reply.

Sorry, crop-bodies only...

savoiu · 04-22-2010, 11:18 PM

Originally posted by rhodopsin

Sorry, crop-bodies only...

I'm also interested. Is this for real?

Amazon.com: AF Confirm Pentax PK Lens To Canon EOS Mount Adapter 7D 50D 40D 30D 5D Mark II 500D 450D IDS...: Electronics

bjorsa · 06-08-2010, 05:17 AM

Is there any adapter to use so that I can use a canon mp-e 65 on my pentax ?
Kindly bjorsa

Jimfear · 06-08-2010, 06:40 AM

Originally posted by rhodopsin

Sorry, crop-bodies only...

Would it be possible to adapt a FF Canon to PK mount successfully?

Pentaxor · 06-08-2010, 01:25 PM

Originally posted by savoiu

I'm also interested. Is this for real?

Amazon.com: AF Confirm Pentax PK Lens To Canon EOS Mount Adapter 7D 50D 40D 30D 5D Mark II 500D 450D IDS...: Electronics

read the product description.

12-16-2009, 07:12 AM	#1
artemapei Forum Member Join Date: Nov 2009 Location: Moscow-Guangzhou Posts: 71	PK-EOS adapter I've seen it on our photomarket today (in China). Do you think it'll keep the infinity for pentax lenses while being used on canon bodies?

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12-16-2009, 08:15 AM	#2
wlachan Veteran Member Join Date: Sep 2006 Location: Canada Photos: Albums Posts: 2,625	I don't think others will know cos there are many generic ones on the market. The best quality I am aware of is by Rayqual Made in Japan. It is also being sold by Kindai. It is designed for APS-C however. mount adapter

12-16-2009, 08:46 AM	#3
artemapei Forum Member Join Date: Nov 2009 Location: Moscow-Guangzhou Posts: 71 Original Poster	as far as i know EoS has very close working gap with canon - so it makes almost impossible to make correct adapter for FF with PK lenses - ONLY for crop. that's why I'm asking - if it's theoretically possible.

12-16-2009, 10:54 AM	#4
cheekygeek Site Supporter Join Date: Jul 2008 Location: Kearney, Nebraska USA Photos: Gallery \| Albums Posts: 1,261	I'm no Canon expert, but I believe one must be more specific than saying "EOS". Quote: Sadly it also appears that it isn’t possible to make adapter rings that let you mount Pentax K (bayonet mount) lenses on EOS cameras with EF lens mounts. The Pentax K diaphragm coupling lever physically interferes with such a possibility. So you’d have to modify the lens (or the camera) to make such a conversion possible. Note that this does not apply to cameras compatible with the EF-S mount. The design of the EF-S mount, with its smaller mirror box thanks to the 1.6x crop factor, coincidentally permits the use of such lens adapters. Possible and practical are not necessarily the same, however. And regarding a specific ebay seller... the way they seem to keep disappearing and reappearing would make me leery. YMMV And shouldn't you be asking this in a Canon/EOS forum???

12-16-2009, 11:09 AM	#5
cousinsane Senior Member Join Date: Feb 2008 Location: madison Posts: 239	Like wlachan said, you can only adapt K-mount lens on canon APS bodies. The aperture lever will hit the mirror on a canon FF body.

12-16-2009, 08:46 PM	#6
artemapei Forum Member Join Date: Nov 2009 Location: Moscow-Guangzhou Posts: 71 Original Poster	i see. it's not an infinity, but mirror problem with EF. thanks. I'll use it only with croped EOS

12-17-2009, 02:17 PM	#7
yeatzee Veteran Member Join Date: Feb 2009 Location: Temecula Photos: Gallery \| Albums Posts: 3,675	Instead of starting a new thread, my friend (a canonite) has become envies of a few of my lenses and wants an adapter to enable her to use them. Where exactly can she a buy a good quality one? Last edited by yeatzee; 12-17-2009 at 06:38 PM.

12-18-2009, 04:41 AM	#8
artemapei Forum Member Join Date: Nov 2009 Location: Moscow-Guangzhou Posts: 71 Original Poster	Originally posted by yeatzee Instead of starting a new thread, my friend (a canonite) has become envies of a few of my lenses and wants an adapter to enable her to use them. Where exactly can she a buy a good quality one? Adapters: Leica R or Nikon F to EOS*

12-18-2009, 11:47 AM	#9
rhodopsin Veteran Member Join Date: Dec 2009 Location: Deep Forest Posts: 643	Originally posted by artemapei I've seen it on our photomarket today (in China). Do you think it'll keep the infinity for pentax lenses while being used on canon bodies? most PK-EOS adapters available today permit infinity focus. if the description states the adapter can "infinity focus" it probably does. there are two types. one mounts the lens on the body in normal position with focus scale on top. the other mounts the lens with focus scale on the side, which moves the rear-protruding part of the lens to the side to prevent interference with the mirror; since some PK lenses protrude to the rear more than others the side mount can permit use of those more protruding that are impossible to mount using the first type of adapter. PK-EOS adapters are very thin, only 1.5mm, so use of quality material such as brass or a hard alluminum alloy is a plus.

12-18-2009, 12:48 PM	#10
ilya80 Veteran Member Join Date: Oct 2008 Location: Saint-Petersburg, Russia Photos: Albums Posts: 410	Originally posted by rhodopsin there are two types. one mounts the lens on the body in normal position with focus scale on top. the other mounts the lens with focus scale on the side, which moves the rear-protruding part of the lens to the side to prevent interference with the mirror; Are you saying there is an PK-EOS adapters out there that allow using K mount lenses on a 5D body without mirror interference, and allow focusing to infinity at the same time?? A prooflink would be most welcome! Looking forward to your reply.

12-18-2009, 12:55 PM	#11
rhodopsin Veteran Member Join Date: Dec 2009 Location: Deep Forest Posts: 643	Originally posted by ilya80 Are you saying there is an PK-EOS adapters out there that allow using K mount lenses on a 5D body without mirror interference, and allow focusing to infinity at the same time?? A prooflink would be most welcome! Looking forward to your reply. Sorry, crop-bodies only...

04-22-2010, 11:18 PM	#12
savoiu Senior Member Join Date: Sep 2007 Photos: Albums Posts: 109	Originally posted by rhodopsin Sorry, crop-bodies only... I'm also interested. Is this for real? Amazon.com: AF Confirm Pentax PK Lens To Canon EOS Mount Adapter 7D 50D 40D 30D 5D Mark II 500D 450D IDS...: Electronics

06-08-2010, 05:17 AM	#13
bjorsa Forum Member Join Date: Apr 2007 Location: Sweden Photos: Gallery Posts: 59	Is there any adapter to use so that I can use a canon mp-e 65 on my pentax ? Kindly bjorsa

06-08-2010, 06:40 AM	#14
Jimfear Veteran Member Join Date: Apr 2007 Location: Uppsala, Sweden Photos: Gallery Posts: 576	Originally posted by rhodopsin Sorry, crop-bodies only... Would it be possible to adapt a FF Canon to PK mount successfully?

06-08-2010, 01:25 PM	#15
Pentaxor Veteran Member Join Date: May 2009 Location: Vancouver, B.C. Photos: Gallery Posts: 6,513	Originally posted by savoiu I'm also interested. Is this for real? Amazon.com: AF Confirm Pentax PK Lens To Canon EOS Mount Adapter 7D 50D 40D 30D 5D Mark II 500D 450D IDS...: Electronics read the product description.