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darosa View Drop Down
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Post Options Post Options   Quote darosa Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 23:12
A few with Sony Reflex 8/500 (A-mount):

1 A remarkable case of levitation


2 Parked cars


3 Rollin' into autumn


4 A blank canvas that needed to be filled


5 A troubled face


6 The blue hour


all with a7riv + Sony Reflex 8/500, manual focus. I think the resolution/magnification of the a7r4 makes it quite easy to nail the focus.
 



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wangavagusbanjo View Drop Down
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Post Options Post Options   Quote wangavagusbanjo Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 23:17
Hi there, first time trying to post a photo here. Hope this works. Shot with a Sony 500mm f8 mirror lens.

https://dl.dropboxusercontent.com//s/p0ycpmlg6cppm4b/DSC00422%20%281%29.jpeg?dl=0


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wangavagusbanjo View Drop Down
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Post Options Post Options   Quote wangavagusbanjo Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 23:19
I can click on the link but the photo is not showing up until I do so. Any suggestions on how to get the photo in the thread without having to clink the link?

Thanks in advance

Simon
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XKAES View Drop Down
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Post Options Post Options   Quote XKAES Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 23:23
Originally posted by darosa darosa wrote:

[QUOTE=woodrim]
Do you have any experience with 800mm cats, Mike? There was a Samyang/Walimex/Bower/... 800/8 a few years ago; and of course there's the Rokkor 800/8.


I think there were two Vivitar 800mm CATS. I think they were both labeled "Series 1", and I think one was f8. The one I know is the F11 Solid CAT by Perkins-Elmer -- close focusing to 25 feet.
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Howard_S View Drop Down
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Post Options Post Options   Quote Howard_S Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 23:53
Originally posted by wangavagusbanjo wangavagusbanjo wrote:

I can click on the link but the photo is not showing up until I do so. Any suggestions on how to get the photo in the thread without having to clink the link?

Thanks in advance

Simon

There’s a thread here with advice for different platforms, https://www.dyxum.com/dforum/posting-images-and-links-faqs_topic28010.html
Howard Stanbury Instagram | Flickr | Web
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Post Options Post Options   Quote wangavagusbanjo Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2021 at 00:45


Great, thanks!

A white faced heron fishing for crabs at Manawatu Estuary, New Zealand. Shot with a 500mm f8 Sony mirror lens.
 



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Post Options Post Options   Quote wangavagusbanjo Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2021 at 01:01




Another couple from the same day with the mirror lens.
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wangavagusbanjo View Drop Down
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Post Options Post Options   Quote wangavagusbanjo Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2021 at 01:03
Thanks Howard
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wangavagusbanjo View Drop Down
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Post Options Post Options   Quote wangavagusbanjo Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2021 at 01:09


And one more.
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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 November 2021 at 01:32
Leo: Did you also have experience with the Minolta AF 500? I wonder if the Sony is noticeably better.

I have not shot any 800mm mirrors. From what I have read, the Minolta white version is better than black and more costly as well. I wouldn't bother with Vivitar. Their solid cats were unique but not very sharp. The other regular vivitar mirrors even worse.

I do have the Questar 700 which is another highly touted mirror. You can read comments from people who insist it's the best, basically repeating what they've read. I have a good, clean copy and can say it is a well-made lens. However, it is not as sharp as I had hoped. I've gotten good pictures from it and the rendering seems different from others and pleasing. It's frustrating that the Sony IBIS does not have a setting for 700mm. I set it at 600mm because I think that's better than no IBIS at all. The extra reach is nice but I'm not sure that I can't get a sharper image from the Minolta, cropped to equal the 700mm field of view.

I think if I were to consider a longer mirror, I'd try 1000mm Rubinar or MTO. The focusing gets harder and IBIS a necessity.
Regards,

woodrim
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Post Options Post Options   Quote Jozioau Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2021 at 02:25
Originally posted by woodrim woodrim wrote:

Leo: Did you also have experience with the Minolta AF 500? I wonder if the Sony is noticeably better.


Perhaps Leo has more technical information on this and I'll let him respond if so, but my clear understanding is that the Sony 500mm f8 AF reflex was simply the Minolta with a name change. At a pinch it might have had some new coating on the front element?

Not dissimilar to the bunch of Minolta lenses that were retained and re-branded at the time Sony bought Minolta's camera division. eg, the 50mm f1.4, the 100mm f2.8 Macro, the 70-200mm f2.8 G SSM, the 300mm f2.8 G SSM and others.
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Post Options Post Options   Quote XKAES Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2021 at 13:03
There were three versions of the Minolta 800mm CAT before the white version. I've never seen any evidence that any of them were different -- except for external cosmetics, and unknown changes to the coatings.
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Basil View Drop Down
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Post Options Post Options   Quote Basil Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2021 at 14:50
I have an MD II version of the 800 f/8. Here are a few thoughts:

It needs a sturdy tripod. It is a beast to try to hand hold. A cable release is very helpful.

Focusing is tricky. Supposedly, the white version is a little easier to focus accurately. I added a little extension to the focus lever on mine and it really helps. Focus peaking and magnification is a must. A lens hood aids in adding contrast. I first made one out of a plastic container painted black. I later purchased a Lens Coat travel hood for a different lens that works really well on the Rokkor.

The depth of field at the minimum focus distance (26.25 feet) is razor thin: 1.2 inches front to back. I usually shot at 30 feet (birds at a feeder), so nailing focus was hit or miss. I pre-focused on the spot they would come to and then shot when they came into that area. It was much easier then trying to follow focus. It was the same when shooting swans on a river. I waited for them to drift into my pre-determined target zone.

Here is an example. The focus is on the front corner of the roof. You can see how the bird being off just a little bit form this target effects things.





This thread has renewed my interest in this lens. I have to get out and play with it some more.



Edited by Basil - 24 November 2021 at 14:58
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Post Options Post Options   Quote XKAES Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2021 at 15:11
The Minolta 800mm has a diameter of about 6.5". I doubt that anyone makes a LONG shade in the 165mm (?) size. That's about 20" in circumference. I've heard of people making lens shades out of black paper -- which would be inexpensive -- but perhaps black ABS/PVC pipe could be used.

Anyone have any experience with the 25 pound Minolta 1000mm f6.3 CAT or the 1600mm f11 CAT (a mere 15 pounds!)????

Close-focusing on the Rokkor 1000mm f6.3 is 100 feet -- without "assistance" -- but surprisingly, the DOF is 13 inches!

http://www.subclub.org/minman/1000.htm

Edited by XKAES - 24 November 2021 at 16:36
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