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Adapter for AF Reflex 500 Mirror

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sybersitizen View Drop Down
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Post Options Post Options   Quote sybersitizen Quote  Post ReplyReply Direct Link To This Post Posted: 04 June 2019 at 18:38
Originally posted by woodrim woodrim wrote:

Is it possible when using the adapter to narrow the focus point?

It's a screw-drive lens, meaning it must use dedicated PDAF in A-mount bodies or in the SLT adapters for E-mount. You can't narrow a dedicated PDAF focus point.
 



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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2019 at 08:50
Originally posted by woodrim woodrim wrote:

I'm very familiar and experienced with the mirrors. Every now and then there will be a bad copy of something, so I had worried about this one. These are the mirror lenses I have - I could speak about the differences from lens to lens:

5.6/300 Makinon - actually two copies, both not much good
5.6/300 Ohnar
5.6/300 Super Danubia
5.6/400 Sigma
5.6/500 Rubinar
6.3/500 Maksutov 3M-6A
8/500 Spiratone Minitel M
8/500 Tamron SP 500 55BB
8/500 Yashica ML Reflex
8/500 Minolta AF Reflex
8/700 Questar
8/500 Soligor - junk
8/600 Sigma - defective


Wow! I thought I had quite a bit of experience with mirrors, but you have me beat!
I'm still waiting for a chance to try the Minolta AF one, but have been very impressed with the little Kenko 400mm, close-mounted on my Nex-6.
Miranda F & Sensorex, Sony A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
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woodrim View Drop Down
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2019 at 16:29
Anthony: The AF Reflex is well worth having. From what I have observed, it must be easier to make a shorter focal length mirror. The two 300mm I have, aside from the crappy Makinons, are very good. The Sigma 400mm is surprisingly good. I had doubts after reading about much copy variation with the Sigma 600mm as well as problems with the mirror surface. I had considered Kenko but decided to stick with the older stuff.

The Tamron SP is probably the best value and the one least likely to have developed problems from fungus, etc. They seem to be consistently good. The Spiratone Minitel M (third version) was also a surprise. I got it for $12 and that was the only reason I purchased it. I'm quite impressed with its sharpness, although it is a little more difficult to nail the focus.

The Rubinar 5.6/500 remains at the top of the mountain.
Regards,

woodrim
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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2019 at 23:46
The Tamron s (55B and 55BB) are very good, but some do suffer from (oily?) spots on the mirror. Doesn't seem to affect the image much.
Miranda F & Sensorex, Sony A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
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woodrim View Drop Down
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 15 June 2019 at 16:35
I'm pretty much convinced the AF is a little off. I will investigate the fine tune adjustment today. Any hints?
Regards,

woodrim
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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 15 June 2019 at 20:55
I find that grass is good, especially if lit from the side. Select centre point of course. Or did you mean fine-tuning it specifically for close-up work? If so, then lace curtains are good, as you get to see the sharpness equally over the whole visual field.
Miranda F & Sensorex, Sony A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
 



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woodrim View Drop Down
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 15 June 2019 at 21:20
Is fine tuning different from AF Adjust?

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woodrim
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woodrim View Drop Down
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 15 June 2019 at 21:40
I've tried several adjustments and cannot get the AF as sharp as my manual focusing.

Regards,

woodrim
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woodrim View Drop Down
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 15 June 2019 at 21:42
Am I adjusting the wrong thing? Is it the AF adapter that needs adjustment?
Regards,

woodrim
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neilt3 View Drop Down
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 16 June 2019 at 00:26
In your camera menu the a/f adjustment with the LAEA4 fitted is for the a/f adjustment with the adapter .
Native lenses focus off the camera sensor and don't need adjustment .
I adjust AF on my cameras taking a test shot of and old picket fence ( with a pronounced grain ) with the camera set up diagonally to it .
Focussed on the corner of a Palin it clear to see if it's focussing back or forwards of the intended point .
I test from a distance that I'm likely to be using the lens at .
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
C & C welcome.
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woodrim View Drop Down
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 24 June 2019 at 16:02
I'm told that we should not post images in multiple forums here at Dyxum, so I invite you to see one of my recent mirror images here:
Boy with peacock feather

Regards,

woodrim
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