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05-07-2016, 04:14 AM   #1
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K-1 and 645 lenses

While I am still (impatiently) waiting for my k1, I noticed that so far nobody tested it with some of the 645 lenses ... (or am I wrong ? )


Last edited by Rosario_CH; 05-07-2016 at 06:18 AM.
05-07-2016, 04:28 AM   #2
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I am curious to but also with 67, 6x7 lenses.
05-07-2016, 09:04 AM   #3
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From my past experience with 645 lenses on a K3 and a Canon 5D2, I would expect several of them (35mm, 55mm, 120mm macro) to be superb. The new 645 28-45 is exemplary in performance but too heavy and not cost effective for use with the K1.
05-07-2016, 11:06 AM   #4
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I usually work with Pentax MF (now with 645Z ) ; I like so much Pentax that I decided without any doubt to get the k-1 but I would hope not to invest a bag of money in new glasses (I just own the 50 and 100 macro WR).... I frankly expect Pentax will give us , sooner or later, a new adapter to mount the 645 lenses on K-1, including AF ....
Btw me too I have tested the 645 lenses on Canon 5dmk3 and on Sony A7r2 ; I found quite good the FA 120 macro and I was wondering how it will perform on K-1.

07-30-2016, 01:33 PM   #5
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Is the adapter available yet? I do not own any 645 glass, but some of it can be picked up at nice prices.
07-30-2016, 01:59 PM   #6
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QuoteOriginally posted by Borrelli Quote
Is the adapter available yet? I do not own any 645 glass, but some of it can be picked up at nice prices.
Is the old manual adapter no longer available, or is there a new version expected?
07-30-2016, 02:02 PM   #7
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Excellent

I tried on k-1 a couple of my old 645 lenses : 120 mm macro, and 150mm ( with the Pentax adapter fm 645 to K ) and also a glorious Hassy 150 mm (fotodiox adapter ring) .... The result is generally excellent but finding a perfect focus by hand is not a breeze ; I found it hard to be set by viewfinder and impossible by LV. So better using a tripod and possibly also a LCD magnifier (I used the LCD VF mounted on my 645Z) ...
I hope in a new ring from Pentax which could allow the full use of the AF ...

PS
I have seen on Ebay the original Pentax adapter 645 to K but is not so cheap......
give a look
http://www.ebay.com/itm/Mint-Pentax-Adapter-K-for-645-Lens-A645-/15218017917...sAAOSwtnpXlWv1

Last edited by Rosario_CH; 07-30-2016 at 02:13 PM.
07-30-2016, 02:12 PM   #8
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I believe the K-1 has the contacts to make AF work if you look closely at the mount. Almost no one talks about this but I do expect a new adapter ring with AF functionality. Maybe someone in the know could chime in, Adam?

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