p.2 #1 · Contax 645 to Canon EF Adapter Initial Impression
I found his adapter info on a Chinese photo forum. He has his adapters on sale on taobao (Chinese eBay), and he does have a paypal account. You can contact him directly for availability and price, and pay him directly on paypal.
Fortunately I got one of his first batch of Nikon adapter. You can ask him when he will have the next batch available. The shipping company he uses is very fast.
p.2 #4 · Contax 645 to Canon EF Adapter Initial Impression
By far the best solution (albeit a the more expensive option) would be either getting a contax 645 lens or N series lens converted via Conurus for canon or nikon. It is not an adapter but actually modifies the lens and mount to work natively with the system. Very nice and retain all functions.
p.2 #5 · Contax 645 to Canon EF Adapter Initial Impression
JamesPTao wrote:
By far the best solution (albeit a the more expensive option) would be either getting a contax 645 lens or N series lens converted via Conurus for canon or nikon. It is not an adapter but actually modifies the lens and mount to work natively with the system. Very nice and retain all functions.
That's a very expensive route. You almost paid double to achieve the same result. What I heard is that the designer is working on a tilt-shift version of this adapter. It could be a better option for C645 lenses.
p.2 #7 · Contax 645 to Canon EF Adapter Initial Impression
A question to the owners of this adapter:
Has anybody ever tried to use the Jasring Contax 645 - Canon EF - Adapter on the Cambo Actus with Cambos Canon lens board with electronic aperture control?
Does the aperture control work?
How much shift can you get without vignetting from the adapter?
p.2 #8 · Contax 645 to Canon EF Adapter Initial Impression
marc aurel wrote:
A question to the owners of this adapter:
Has anybody ever tried to use the Jasring Contax 645 - Canon EF - Adapter on the Cambo Actus with Cambos Canon lens board with electronic aperture control?
Does the aperture control work?
How much shift can you get without vignetting from the adapter?
I not the owner of Cambo Actus and its accessories, but I can say the Canon lens board is just a wire extension of the lens contacts. It should work fine.
p.2 #10 · Contax 645 to Canon EF Adapter Initial Impression
marc aurel wrote:
Has anybody ever tried to use the Jasring Contax 645 - Canon EF - Adapter on the Cambo Actus with Cambos Canon lens board with electronic aperture control?
Does the aperture control work?
How much shift can you get without vignetting from the adapter?
I don't have a Jasring C645 to EF adapter, so can't speak to whether it works with Cambo's smart lens panel. But I recently acquired Kipon's version of this adapter and in my experience with it thus far, it works well with Cambo's lens panel:
As for the range of movements that can be achieved using these adapters in series with C645 lenses, due to the small throat diameter of the EF lens mount, hints of vignetting typically start to appear around the 15 mm range, even though most C645 lenses project image circles that are large enough to support a slightly larger range of movements.
For example, the photo below (which is straight from Raw Therapee using its default settings) was taken with the 45/f2.8 at f8 and 15 mm (!) of rear fall -- the maximum amount possible with the Actus B version I have -- applied:
Note: The slightly asymmetrical vignetting visible was due to the carbon fiber lens mount panel being installed slightly crooked on my modified Actus camera, which can be seen in the photo above and which I have since adjusted away.
