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[CONTAX645<->MAMIYA RZ67 Interface Convert Adapter] needed?


s_taka

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We're currently doing a little research on as to around how many

Mamiya RZ67 users are interested in an adapter which enables a

digital camera back (for Contax645) to be equipped with Mamiya RZ67.

We would like to know how much need there will be among users.

It might be impolite in a way to post this sort in this forum, but if

you would be curious about this adapter, then replying this post

would be greatly appreciated.

 

Thanks,

Taka

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For me, the only advantage of putting a sensor that doesn't fill the coverage area of a 645 lens on my RZ would be to have the benefit of the rotating back and bellows focusing, at the expense of a lot of bulk and weight (of both camera and lenses). In addition, the lenses are very slow by 645 standards, optimized for a much larger coverage, and with even more limitation (from the so-called "crop factor") at the wide angle end of the coverage range.

 

Moreover, I don't think I'd be inclined to buy a back for a Contax if I didn't already have a Contax kit, which would really limit the reasons I would want to adapt it to the RZ.

 

I suppose if you are shooting a lot of film and digital and want to use the same camera for familiarity reasons it would make sense, if the disadvantages aren't important, or maybe if you want to use the RZ tilt/shift lenses and larger coverage circle as a substitute for a view camera. It's hard to say how big that market is. Someone familiar with the tilt/shift lenses would have to tell you whether the range of movement is enough to take advantage of the excess coverage.

 

As I recall, there was a post not too long ago by someone complaining about having bought a RZ Pro II D, only to discover all of the limitations of the sensors available that cover much less than the RZ's native format.

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An afterthought about the use of the tilt/shift lenses: the shortest RZ is a 75mm, which would create about a 1.5 "crop factor" on a 36x48 sensor. That would make the 75 coverage equate to the 110/2.8 on film, which I would think would put the architectural shooters out of the picture.
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First you re dealing with a very small pool of users people who have bought a

dedicated digital back for a contax 645 and who are now switchign to an RZ67.

 

Virtually every digital back manufacturer makes their own interchangable camera

interface plates So if you have a Phase One back that you are using for your now orphaned

Contax 645 and are switching to a Mamiya RZ67 you buy the RZ interface adapter from

Phase One and either you or a Phase One tech does the swap. Having a tech do it with your

body assures that the back is properly ajusted for the correct focus plane in your

individual camera.

 

The Mamiya RZ67 is a terrific film camera but a lousy choice for current medium format

backs whch use a 37x49mm sensor: the resulting "crop factor" is just too large unless you

really like working with long focal length lenses.

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Thank you all very much for your opinions on my posting.

And I apologize to you all for not getting back here earlier.

 

I cannot reply to all of your responses. I am sorry about that.

Whether or not we could fabricate the adapter depends on its needs

among both CONTAX645 and MAMIYA RZ67 users.

Besides, the situation seems a bit different depending on countries.

It's not quite certain but seems that there are more Mamiya users

overseas than here in Japan.

So the reason why I posted a message in here is to know better how

much need there would be if there were the adapter.

 

Re:shiver me timbrrrre

Thanks for the info. Actually, the other day I posted a message in a

forum at robgalbraith site.

But my posting in there was deleted as it was regarded as something

related to an advertising, which was against its forum rules.

 

Having been able to get lots of responses here helps me quite a lot.

I do appreciate what you have written since I posted my first message

in here.

 

Thank you so very much,

Taka

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  • 2 months later...

I am a shooter who now has a contax 645 Phase one p25 and NEEDS to put it on my RZ67

i am considering moving to the Fuji GX680 because the Kapture Group makes an adapter for

the back...

 

I need the bellows focus for product and the lens ratio does not bother me..

 

There are plenty of RZ67s out there. PLEASE HELP US.

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  • 1 year later...

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