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Samples: Minolta Rokkor 35mm F2.8 Shift CA

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Post Options Post Options   Quote rovhazman Quote  Post ReplyReply Direct Link To This Post Topic: Samples: Minolta Rokkor 35mm F2.8 Shift CA
    Posted: 18 June 2014 at 11:25
Samples: Minolta Rokkor 35mm F2.8 Shift CA

There are four versions of this lens:
  1. 1976: SHIFT CA ROKKOR(-X) | Style: MC-X
  2. 1977: SHIFT CA | Style: MDI
  3. 1978: SHIFT CA | Style: MDII
  4. 1982: SHIFT CA | Style: MDIII


mount: Minolta SR
format: FF
year: 1976-1982
max aperture: F2.8
min aperture: F22
elements/group: 9 in 7
aperture blades: 6
min focus distance (mm): 300
filter diameter (mm): 55
length (mm): 71.5
weight (g): 560 (1) | 555 (2-4)

additional information:

lens shade: screw-in

A special perspective control lens:
- It has a Shift function (but no tilt) - Vertical shift: 11mm up or down, lateral shift: 8mm left or right, diagonal shift 7.5mm
- It has Variable Field Curvature (VCF) function - a unique function (only one other lens has it, the Minolta 24mm F2.8 VCF). It allows to curve the field of focus from convex to flat to concave.

Scan of the manual: PDF


This thread is open for C&C and for posting additional pictures. Please ONLY post pictures taken with the lens in the title- or start a new thread.

Edited by Micholand - 29 August 2014 at 16:24
 



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Post Options Post Options   Quote rovhazman Quote  Post ReplyReply Direct Link To This Post Posted: 18 June 2014 at 11:41
I got this lens ~2 years ago and tried to figure out how to get use of it with NEX-7 (APS-C sensor) and A900 (FF, but with adapter problems).
I also used it in Oktoberfest 2013, again with NEX-7 and A900.

I must say I didn't managed to get the VCF function to work for getting focus, but I liked it to get things out of focus (selective focus)... (like people like to use the tilt effect in other lenses).

When I got the a7R, one of the first lens to try on it was this one - FF sensor, with glassless adapter than can focus to infinity!
Now, I must admit, I still don't have the control I like...

To summarize my finding:
- It is a great (sharp, good colors and bokeh) lens when using it as a regular 35/2.8 lens, although it has some problems with strong light (not typical flares, but more areas of red tint).
- Minimal focus distance is very short - you can get really close...
- It is a nice shift lens. Only at the extreme corners with maximum shift you lose sharpness.
- The VCF effect is much stronger with FF than with APS-C, although combining with shift you can get part of the arc on APS-C.
- When curving the field, the curved areas are not that sharp and in many cases are just smeared.
- As I said, the VCF is nice to have the cool effect of selective focus (and combined with shift, you can move it off center), but very hard to get useful for keeping round scenes in focus (I don't want to say impossible, since I still think I will get it right one day...).

Now for some photos. The old photos are linked above, so below I will post my photos with a7R.

Edited by rovhazman - 18 June 2014 at 12:06
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Post Options Post Options   Quote rovhazman Quote  Post ReplyReply Direct Link To This Post Posted: 18 June 2014 at 11:53
First collection from December 2013, when I got the a7R...

As I said, it is nice as regular 35/2.8:
Harvard library

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/?? | 1/125 sec | ISO 800

Harvard yard

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/?? | 1/250 sec | ISO 800

Here is one example when fully shifted up, the corners get bad (this is extreme case and usually the corners are not that bad):
Harvard church

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/?? | 1/125 sec | ISO 800

And, as I said, it is most useful for selective focus...:
Santa on the drums

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/?? | 1/250 sec | ISO 800

Accessible entrance .... One block ahead

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/?? | 1/250 sec | ISO 800

And here is combination of shift and focus curve:
The chair

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/?? | 1/125 sec | ISO 800
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Post Options Post Options   Quote rovhazman Quote  Post ReplyReply Direct Link To This Post Posted: 18 June 2014 at 12:04
And few from lately, when I took it out again, still trying to figure the lens...

Again, nice 35/2.8 lens:
Climbing to The Monument to the Negev Brigade

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/8 | 1/800 sec | ISO 200

The Monument to the Negev Brigade I

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/8 | 1/800 sec | ISO 200

The Monument to the Negev Brigade II

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/8 | 1/1000 sec | ISO 200

And the shift works fine (the following 2 are fully shifted up):
The Monument to the Negev Brigade III

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/8 | 1/1000 sec | ISO 200

Camels

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/8 | 1/500 sec | ISO 200
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Post Options Post Options   Quote rovhazman Quote  Post ReplyReply Direct Link To This Post Posted: 18 June 2014 at 12:18
And, lastly... I tried to repeat the experiment from here with the a7R, but got it really wrong this time - the effect is very minor (you can see it on the lens on the right). It is harder for me to set up that test scene these days (while in Boston I had my "studio" in the basement, here everything is well packed and it is hard to find time to set it up...), but I will try to make it properly in the coming days.

Flat field

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/8 | 1/160 sec | ISO 400

Curved field

a7R + Minolta Rokkor 35mm F2.8 Shift CA | f/8 | 1/160 sec | ISO 400
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Post Options Post Options   Quote Bliss Images Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2014 at 01:55
Hi rovhazman, thanks for sharing these images and information. I'm impressed with the results.
I have recently purchased both the A7r and Rokkor 35mm shift. Which adaptor do you use?
From what I've read, those red smears are caused by light leaks. There are various ways of eliminating them that can be found on the net.
I have a cheap adaptor and the leaks are pretty bad so I'm thinking of getting a Metabones or Novoflex.
 



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Post Options Post Options   Quote rovhazman Quote  Post ReplyReply Direct Link To This Post Posted: 04 August 2014 at 19:52
Thank you Bliss Images for your comment and welcome to Dyxum!

I used a cheap eBay adapter, and I agree that it might be the issue. I will try (at some point when I have time...) to cover the adapter and its connections and see if things are getting better.
I do suspect that there is some light leak, but sometimes I suspect it is the lens itself. For example, when the lens is shifted, in many cases, I see a flare in the center of the frame.

Well, this lens needs more time...
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Post Options Post Options   Quote rovhazman Quote  Post ReplyReply Direct Link To This Post Posted: 20 February 2016 at 20:01
I am now testing the lens on a7R Mark II.
Generally, the lens is still sharp as a regular 35mm lens, shift works well, and the focus curving feature is tricky and hard to master...
With the a7R, there were some issues in some cases, which are all gone with the a7RII.

Just like in my post of June 2014, I still don't have my "studio" setup... (although now we moved to our own house, and I am planning to setup something). So below is a quick and dirty test - few beer bottles from the fridge, no flash (just the weak and cold room light), camera is stabilized by a book and socks...

Anyways, I think i learned something here - I always tried the maximum curvature, to get the effect visible, but then, the curved area was also smeared. Now I did very minor curvature, trying to get the side bottle sharper, and I think it is better.

Not curved

a7RII + Minolta Rokkor 35mm F2.8 Shift CA | f/2.8 | 1/60 sec | ISO 4000

Curved

a7RII + Minolta Rokkor 35mm F2.8 Shift CA | f/2.8 | 1/60 sec | ISO 4000
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Post Options Post Options   Quote Snegren Quote  Post ReplyReply Direct Link To This Post Posted: 05 March 2024 at 10:59


A7M3, ISO 100, f/g, 1/100 sec.
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