Dumb Question......

**Mallee Boy** · 11-16-2012, 08:19 PM

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Sorry....have searched but can not find an answer, and get confused when some manufacturers say their lens fits K mount and 645D.

????????: Is there an adapter that allows K mount lenses (say the DA 14 or FA 43) to be fitted to the 645D....or is it just not possible ?

Thanks.

elliott · 11-16-2012, 08:26 PM

I'd like to see anyone who claims that, it must be a misprint or someone who is misinformed. There are adapters to mount 67 and 645 lenses on a K mount body, but the other way around would result in vignetting.

**grhazelton** · 11-17-2012, 02:15 AM

Not to mention that a K mount on a 645 couldn't focus to infinity.

klaus123 · 11-17-2012, 10:53 AM

does nor work ..... besied reverse rings for e.g. Standard-Zooms like the Tamron 17-50 or similar for macro photography

**Mallee Boy** · 11-17-2012, 03:29 PM

Thankyou. Appreciate you all taking the time to respond. I thought that was the case but when you see adverts claiming something else (albeit on ebay....thats why I asked), it can get confusing.
example: http://www.ebay.com.au/itm/Sigma-4-5mm-f-2-8-EX-DC-HSM-Lens-for-Pentax-Digit...item19d6b6c675

Anyone care to comment on the virtues of the Nikon D600 over the 645D, leaving the obvious price differential alone for now....?

Ryan Tischer · 11-18-2012, 04:59 PM

Do you mean the Nikon D800 (36mp) or the Nikon D600 (which I think is around 22mp)? The D800 might be able to come reasonably close to the clarity of the 645D, assuming you're using on the best glass available, but the D600 certainly won't be able to touch it, at least if making large prints or cropping is essential to you.

11-16-2012, 08:19 PM	#1
Mallee Boy Site Supporter Join Date: Sep 2006 Location: South Australia Photos: Gallery \| Albums Posts: 3,904	Dumb Question...... Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here. Sorry....have searched but can not find an answer, and get confused when some manufacturers say their lens fits K mount and 645D. ????????: Is there an adapter that allows K mount lenses (say the DA 14 or FA 43) to be fitted to the 645D....or is it just not possible ? Thanks.

11-17-2012, 03:29 PM	#5
Mallee Boy Site Supporter Join Date: Sep 2006 Location: South Australia Photos: Gallery \| Albums Posts: 3,904 Original Poster	Thankyou. Appreciate you all taking the time to respond. I thought that was the case but when you see adverts claiming something else (albeit on ebay....thats why I asked), it can get confusing. example: http://www.ebay.com.au/itm/Sigma-4-5mm-f-2-8-EX-DC-HSM-Lens-for-Pentax-Digit...item19d6b6c675 Anyone care to comment on the virtues of the Nikon D600 over the 645D, leaving the obvious price differential alone for now....? Last edited by Mallee Boy; 11-17-2012 at 03:50 PM.

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11-16-2012, 08:26 PM	#2
elliott Inactive Account Join Date: Dec 2008 Location: North Carolina Photos: Albums Posts: 1,720	I'd like to see anyone who claims that, it must be a misprint or someone who is misinformed. There are adapters to mount 67 and 645 lenses on a K mount body, but the other way around would result in vignetting.

11-17-2012, 02:15 AM	#3
grhazelton Loyal Site Supporter Join Date: Jul 2007 Location: Jonesboro, GA Photos: Albums Posts: 1,972	Not to mention that a K mount on a 645 couldn't focus to infinity.

11-17-2012, 10:53 AM	#4
klaus123 Senior Member Join Date: Apr 2011 Location: Germany Posts: 238	does nor work ..... besied reverse rings for e.g. Standard-Zooms like the Tamron 17-50 or similar for macro photography

11-18-2012, 04:59 PM	#6
Ryan Tischer Veteran Member Join Date: Feb 2012 Location: Duluth, Minnesota Photos: Albums Posts: 458	Do you mean the Nikon D800 (36mp) or the Nikon D600 (which I think is around 22mp)? The D800 might be able to come reasonably close to the clarity of the 645D, assuming you're using on the best glass available, but the D600 certainly won't be able to touch it, at least if making large prints or cropping is essential to you.