Luminous Landscape Forum

Equipment & Techniques => Medium Format / Film / Digital Backs – and Large Sensor Photography => Topic started by: maeda on September 17, 2014, 04:50:11 am

Title: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: maeda on September 17, 2014, 04:50:11 am: My question is not to know if i can use the leaf shutter (i know that it's not possible) with the "old" 645 AFD body but more to know if i can use the lens like a normal 80mm with any 645 AFD.

Thanks
Title: Re: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: Paul2660 on September 17, 2014, 07:50:33 am: To use the LS lenses I believe you need either a Phase One DF with the latest firmware or a DF+. With a LS lens there is no way to open the leaf shutter permanently and just use a focal on the camera body that I am aware of. Both shutters fire all the time. There is also a Mamiya body equivalent to the DF+.

The base 645 camera I don't think will work since it can't control the leaf shutter.

Paul
Title: Re: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: maeda on September 17, 2014, 09:15:58 am: Thank you Paul !
Title: Re: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: Paul2660 on September 17, 2014, 09:25:01 am: More than happy to help. It's a great lens, and you can find the older DF body for a pretty good deal at times on ebay. The DF+ had some enhancements, mainly in the the custom function and AF area (still only3 point, but much faster and solid when locked).

Paul
Title: Re: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: maeda on September 17, 2014, 09:35:00 am: In fact i sold few weeks ago my 645DF with the idea to buy a RZ67. As i still have my 80mm LS i am wondering if i could put it on an older body (i mean less expensive) as the 645 AFDII or III etc
I hesitate to sell my 80mm or keep it and buy a second hand 645DF+
Title: Re: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: wing1 on September 17, 2014, 01:03:59 pm: So it is not possible to use LS lenses with a film camera as 645 af? Will be great to see the quality!
Title: Re: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: Paul2660 on September 17, 2014, 01:40:13 pm: No I don't the LS. Shutter will fire. The older bodies are not supported by the firmware needed to work the leaf shutter. I believe you have to be at a DF body or higher.

Paul
Title: Re: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: Doug Peterson on September 17, 2014, 01:49:09 pm: LS lenses on older bodies:
- will mount
- can be manually focused
- no autofocus
- no firing of the actual leaf shutter, focal plane only
- no control of aperture (remains wide open)

So for 99% of applications it's a no go. But it's not impossible to use it.
Title: Re: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: Paul2660 on September 17, 2014, 01:52:01 pm: I guess that is what I said. Pretty much worthless as I can't imagine using it wide open.

Paul
Title: Re: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: Doug Peterson on September 17, 2014, 07:08:50 pm: Quote from: Paul2660 on September 17, 2014, 01:52:01 pm
I guess that is what I said. Pretty much worthless as I can't imagine using it wide open.

Paul

Indeed. I list the specific (severe) limitations and the (few) possibilities not to be pedantic, but because with a few hundred readers there might be one or two that fit into the 1% that might find such (very very limited) options to be useful.
Title: Re: 80mm SK LS lens on 645 AFD / PHASE ONE AF ?
Post by: dylancoombe on September 28, 2014, 02:34:42 am: I recently purchased a Phase DF with the SK 80mm 2.8 LS and P30+ DB... I bought it mainly for the digital back as I would like to utilise my Mamiya RZ kit for digital... my question is - Is the Mamiya/Phase 80mm 2.8 comparable in terms of quality? LS is a luxury I can live without but need to maintain sharpness and lack of aberration. If it is I will sell the SK lens and use the funds to get the adapter for the RZ.