Amazon.com: Customer reviews: Fotodiox Pro Lens Mount Adapter - Pentax 6x7 Lenses to Pentax 645 Cameras

Top positive review

Adapter fits perfectly and well made. I'm using this ...

Reviewed in the United States on March 15, 2017

Adapter fits perfectly and well made. I'm using this to mount my Pentax 67 105mm f2.4 onto my Pentax 645Nii camera and it works perfectly. The adapter fits very securely to both the lens and the camera. All manual function works, including visual and audible focus confirmation on the 645Nii.

One person found this helpful

Top critical review

Critical reviews›

Jerry Berkstresser

Fail. Aperture lever unreliable

Reviewed in the United States on February 18, 2020

The aperture does not always stop down during exposure.

Most of the time this works with my 105mm lens, and it never works on my 45mm lens. The greatest thing about this is the generous Amazon return policy. I'm done wasting my time with this, I bought a used Pentax part instead.

27 total ratings, 22 with reviews

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From the United States

James Tang

Adapter fits perfectly and well made. I'm using this ...

Reviewed in the United States on March 15, 2017

Verified Purchase

One person found this helpful

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D. W. Griffiths

Good value and well made

Reviewed in the United States on August 5, 2013

Verified Purchase

The Pentax-made original of this adapter is now hard to get, and often a lot more expensive if you are lucky enough to find one. The Fotodiox alternative is still available new, and has performed well on my 645D with a range of heavy 1970s manual Takumars. Even with a 300mm Takumar that weighs almost as much as an artillery shell, the adapter formed a secure connection to the camera body with no noticeable rotational play. It felt like the adapter and lens were one unit, which is how it should be on a premium camera. The adapter also has the inner and outer flanges to accommodate both types of Pentax 67 lenses.

There are two inner coupling levers to allow auto-diaphragm and meter coupling to the camera. Fotodiox also say that even with the adapter, focussing at infinity is guaranteed. I have verified this in use. The unit does not allow auto-focus and many of the other modern functions found on the 645D, but it will allow Manual Mode and Aperture Priority.

The release button to free the lens from the adapter operates smoothly and has been machined accurately to prevent any wobble or rattle. Finish on the adaptor is smooth with a slight sheen to it - a bit like exterior of the old 67 extension tubes. Some 645 users have raised concerns about this as it provides what is potentially a slightly reflective inner surface by the rear element of the lens. By contrast, the 67 extension tubes were flat black on the inside. The solution tried by some is simply to use a touch of flat black paint on the inner surfaces. I have not done this so far, and on the occasions I have used the adapter, the performance of the lenses has not been affected in any way that I have noticed. If it is a problem, it is simple to remedy very cheaply.

Anyone wishing to look at the adapter specs on the Fotodiox website will have a game on their hands at present (Aug 2013). When I clicked on "Adapters" and "Medium Format", the website gave me the choice of Hasselblad, Mamiya, and Pentax. Naively I clicked on "Pentax" only to be shown a Vizelex RhinoCam for Sony NEX E-Mount Cameras. Anyone with a penchant for mysteries will enjoy seeing this irrelevant product, but I don't, and I didn't. Finding the details of the 67 to 645 adapter took a lot more mouse work.

Overall this adapter is very good value for money, and looks and feels as if it has been built up to a price, rather than down to one. The only slight niggle I have experienced with it in use (only just preventing a five-star rating) is that something can, on occasion, catch when removing the adapter from the camera body. This can result in a slight metallic "ping" that I am not comfortable with. That said, it has performed flawlessly with some very heavy 67 lenses, and is a good alternative for anyone who does not want to trawl eBay for the much more expensive Pentax adapter.

13 people found this helpful

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Jerry Berkstresser

Fail. Aperture lever unreliable

Reviewed in the United States on February 18, 2020

Verified Purchase

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Lars Holte

Fine quality at a very fair price

Reviewed in the United States on February 24, 2013

Verified Purchase

Much cheaper than the original Pentax version, but with the same functionality. Has even got the outer bayonet for longer lenses. Only con is that the insides could have been better coated with anti-reflective paint.

8 people found this helpful

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KA Smith

Seems to work well for me

Reviewed in the United States on May 25, 2019

Verified Purchase

This device adapts a Pentax 67 lens to a Pentax 645x camera body. There is a report that shutter actuation may not work in certain camera mirror-up modes on the Pentax digital 645. On my 645Z using the 67 55-100mm zoom lens, I was not able to observe this issue. The item worked just as well as the Pentax 67 to 645 adapter as far as I could determine.

None of the "features" in the rating apply to use of 67 lenses on 645 camera bodies. Auto iris is the only lens to body passthrough.

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MattB

Good enough

Reviewed in the United States on April 5, 2017

Verified Purchase

Just a little play on my 645D which isn't ideal but doesn't seem to matter much.
I painted the inside reflective surfaces with flat model paint to minimize internal reflections I heard other users have experienced.

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