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03-12-2009, 06:07 PM   #1
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switching to a 6X7 digital body

Hello,
My husband has an asahi pentax 6x7 with 45, 105, and 200mm lenses.
Is there a digital body that can fit these lenses?
I'd like to buy him a digital camera for his birthday!
THank you, Isabel

03-12-2009, 06:15 PM   #2
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There is no 6x7 digital body. However, Pentax makes the "Adapter K for 6x7 Lens" that allows any of the Pentax (and Samsung) DSLRs to accept the 6x7 lenses. B&H sells it for $140 here.

I also understand that the 6x7 lenses are heavy, so it would probably make sense to pair them with a K20D or K10D, as those bodies would best handle the heft of those lenses.
03-12-2009, 06:48 PM   #3
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Apparently Pentax has resurrected plans for their digital 645 camera. Not sure when it's supposed to be released, though it won't be before summer, I suspect.

Note that Pentax has been planning this camera for several years and it's never come out, so factor that into your plans.

I think your best bet is to get the K20D with a battery grip (for the heft and for the portrait shutter) and get the adapter for his lenses. The K20D has excellent image quality and I think your husband would be very happy with it.
03-12-2009, 08:23 PM   #4
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Moved to 6X7 forum.

03-14-2009, 09:45 PM   #5
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QuoteOriginally posted by rfortson Quote
Apparently Pentax has resurrected plans for their digital 645 camera. Not sure when it's supposed to be released, though it won't be before summer, I suspect.

Note that Pentax has been planning this camera for several years and it's never come out, so factor that into your plans.

I think your best bet is to get the K20D with a battery grip (for the heft and for the portrait shutter) and get the adapter for his lenses. The K20D has excellent image quality and I think your husband would be very happy with it.
What will the price be? $18,000 USD?
07-17-2009, 09:15 AM   #6
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They are now saying 2010 for the 645 digital. The current plan is for 30 megapixels. I'm sure it won't be cheap.
07-17-2009, 10:54 AM   #7
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I believe, but I'm not sure, that it's also possible to adapt those lenses to a Mamiya digital body or something. I don't know how they would perform on a digital sensor, but they're lovely. (And, yes. Beeg. Heavy. Slow, compared to 35mm glass. Also taking a serious crop factor hit down from 6x7 coverage to APS-C, as regards usefulness. The goodness of them has much to do with how well they cover that big frame. It may be more cost-and-weight-effective to shoot 35mm Takumar glass on a digital body.)

One thing about *any* medium-format digital is, any way you slice it, the price adds up to an awful lot of film. When the digital 645 comes out, it'll take the same adapter as the other 645s, though.

I love those old 6x7 lenses, ...if the person in question really wants to use them, needs the speed of digital, (which in MF probably means cost is no object) and, of course, the lenses can perform on such a sensor, (Pentax' own sensors are very well-suited to using old glass on them: this is not a universal thing about digital sensors, though) .....Well, I can understand that. And I think it's doable.
07-17-2009, 11:12 AM   #8
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The 645 lenses come in an FA series which means AF. All of the 645 and 6x7 lenses have the SMC coating so performance on a digital sensor shouldn't be a stretch.

07-17-2009, 12:00 PM   #9
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QuoteOriginally posted by GeneV Quote
They are now saying 2010 for the 645 digital. The current plan is for 30 megapixels. I'm sure it won't be cheap.

Plans are not 30mp, but more than 31mp. My guess is at least 39mp - perhaps 50mp.

Targeted price is no more than $10 000.
07-17-2009, 12:43 PM   #10
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QuoteOriginally posted by Pål Jensen Quote
Plans are not 30mp, but more than 31mp. My guess is at least 39mp - perhaps 50mp.

Targeted price is no more than $10 000.
Where did that price come from? The last guess-timate that I saw had it at > $10,000 USD because of the rumored use of the Kodak 31.6 MP ccd sensor shared by the Hasselblad H3D-31 which is a 44x33mm sensor.

Edit: Either way, this is likely out of the realm of the OP's idea since this body is a 645d and his B-day is likely passed by now.
07-20-2009, 03:53 PM   #11
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QuoteOriginally posted by indytax Quote
There is no 6x7 digital body. However, Pentax makes the "Adapter K for 6x7 Lens" that allows any of the Pentax (and Samsung) DSLRs to accept the 6x7 lenses. B&H sells it for $140 here.

I also understand that the 6x7 lenses are heavy, so it would probably make sense to pair them with a K20D or K10D, as those bodies would best handle the heft of those lenses.
I use the adapter to use my 6x7 lenses on my K-7 and with Pentax 1.7x AF adapter they are AF !

165mm F2.8 6x7 lens


1.7x Pentax AF adapter with MF 85mm F1.4 converts it into a 145mm F2.38 AF lens

http://www.youtube.com/watch?v=6aSEFjZNbCE
07-21-2009, 03:02 AM   #12
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hi Jogiba,

Do you mean 645 lens AF, cause all the 6x7 lenses are manual focus..

cheers Neil
07-21-2009, 09:43 AM   #13
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QuoteOriginally posted by jogiba Quote
I use the adapter to use my 6x7 lenses on my K-7 and with Pentax 1.7x AF adapter they are AF !

1.7x Pentax AF adapter with MF 85mm F1.4 converts it into a 145mm F2.38 AF lens

YouTube - Pentax K-7 in 1536x1024 *** mode with 85mm F1.4 Rokinon and Pentax 1.7x AF adapter (145mm F2.38)
You mean you get autofocus confirmation in the viewfinder, as the converter cannot truly focus these manual lenses automatically.
07-21-2009, 10:53 AM   #14
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QuoteOriginally posted by K-9 Quote
You mean you get autofocus confirmation in the viewfinder, as the converter cannot truly focus these manual lenses automatically.
Why would be any different than using it on the Tak 500mm f4.5 or Super Tak 300mm f4?

Edit: http://kmp.bdimitrov.de/teleconverters/F1.7X.html
07-21-2009, 03:26 PM   #15
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the digital 645 according to pentax will not be sold in he US and will only sell it in asia and europe
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