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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: 22 November 2021 at 20:08
Originally posted by Harm vb Harm vb wrote:

And lots of dirt on your sensor



This weekend I was tempted to buy an unknown mark of 600mm mirror.
Originally it was not meant for FE-mount, but the owner added the right converter on the lens body.

So, should I buy this one?



That's a Sigma 8/600. It has been made for other labels but mostly Sigma. It's somewhat of a crapshoot whether or not you get a good one. The good ones seem to give sharp images. Both the 600mm and 400mm Sigma mirrors seem to have more haze and/ot fungus issues than other makes. Many suffer from a ring around the outer edge of the mirror, possibly caused by adhesive eating through from the rear. If you do give it a try, make sure you see a clean mirror first.
Regards,

woodrim
 



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Harm vb View Drop Down
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Post Options Post Options   Quote Harm vb Quote  Post ReplyReply Direct Link To This Post Posted: 22 November 2021 at 20:19
Ah, thanxs.... I saw one shot of the moon with this lens, but I found it not as sharp as I expected it. I once owned a Samyang 500mm which had the same kind of photographs..

Thanxs Woodrim for this information!

I'll leave this one.
Harm, with A7iii+A7Rii plus 6-400mm glass.
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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: 22 November 2021 at 20:44
I had great luck with my Sigma 600mm CAT. As I recall, it had 22.5mm filters on the rear -- they came with it. Mine was an all black version. I only sold it because it wasn't that much different from a 500mm. I "traded it in" for an Osawa (Tokina) 650mm f8.5 for a little more substantive reach.
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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: 23 November 2021 at 00:25
I took the Spiratone Minitel 8/500 version 1 to the cemetery over the weekend. Strange but that's where we see a lot of birds. After using the lens for an entire morning and afternoon, I can say it is a good lens and well worth the low prices it sells for on eBay. The focus ring feels better than most, with just the right amount of resistance. I like the feel of it better than the Minitel M.

Ease of focus is good but I did find it more difficult to nail the focus perfectly when compared to my better mirrors. I think the low contrast makes it more difficult. When nailing the focus, the lens is sharp. My keeper rate was lower than I expected, indicating more trouble nailing focus than I had thought.

The morning at the cemetery was more challenging due to the light and shadows. Bright light is a big advantage with a mirror lens. Later, at a park, I found the focusing easier and especially when I picked subjects with texture. I think the duck photos are good having benefitted from the light and texture to focus on. I have some flower pictures as well that I'll share at a later time. I used this and two other mirrors when shooting the flowers and differences can be seen. I saw an immediate difference in the viewfinder when switching to the Vectis and Nikon mirrors. Still, the Minitel represents a good value with good performance. The performance gap is smaller than the price gap.

I should also mention that I handed the Minitel off to a friend who was shooting with his A7rIV to give it a try. He posted one image that I first thought came from his Mirotar. It was from the Minitel and better than anything I shot that day. In fact, better than his Mirotar photos. That isn't to say it is a better lens but shows that when the focus and light are perfect, it can really produce an excellent image. I will try to get my friend to post it here as potentially the best that can be achieved from the Minitel.

These are some of mine.
1


2


3


4


5
Regards,

woodrim
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Post Options Post Options   Quote XKAES Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 01:22
Well worth the price of admission. I'd like to see your friend's shots!

The only possible difference between your Minitel and later ones is that some of the early ones were not multi-coated. I've only run across one of these, and never did any comparative tests, or check serial numbers, but the multi-coating has got to help in some situations.

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Post Options Post Options   Quote keith_h Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 06:24
Lots of good information here. I have just ordered a Minolta 500/f8 and look forward to using it. In particular to figure out capturing images with the donuts suppressed. The images with the smooth bokeh are sensational.
 



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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: 23 November 2021 at 13:17
Originally posted by keith_h keith_h wrote:

Lots of good information here. I have just ordered a Minolta 500/f8 and look forward to using it. In particular to figure out capturing images with the donuts suppressed. The images with the smooth bokeh are sensational.


Using a 500mm mirror takes some getting used to and some practice and development of technique. Do use magnification for help with focusing.

I agree that those images where donuts are controlled deliver unique and pleasing results. There have been times when I had to look back to images before and after to confirm a picture was indeed from a mirror. Images without donuts would be a good theme within this mirror thread.

I think this is an example of what might not be expected from a mirror lens. 5.6/400 Sigma
Regards,

woodrim
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Post Options Post Options   Quote mariuszlo Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 13:38
No donuts. Minolta AF 500mm Reflex.

Sony A99II.
Sony A99II with Sony, Minolta, Sigma, Tamron A lenses, Sony A7R with Minolta MD lenses, Sony A6400 with Sony E lenses.
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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: 23 November 2021 at 13:47
Originally posted by mariuszlo mariuszlo wrote:

No donuts. Minolta AF 500mm Reflex.

Sony A99II.


That's a good example. Sharp and has some pop.
Regards,

woodrim
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Post Options Post Options   Quote XKAES Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 13:51
Originally posted by keith_h keith_h wrote:

Lots of good information here. I have just ordered a Minolta 500/f8 and look forward to using it.


I have seen the Minolta 500mm for sale with and with the filters. The important filter is the Minolta UV filter -- which Minolta labels "INTEGRAL" -- which to me means it's part of the lens system. Perhaps others can explain this better.
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 16:31
Let me add something more in keeping with this thread and not derail it again. Did you see this SAR post about The Chinese site Xitek testing a whole bunch of 500mm mirror lenses on the Sony A7R? Some of you might be interested
Why not follow me on Instagram? @Addy_101
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Post Options Post Options   Quote XKAES Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2021 at 21:21
Lots of work, for sure, but not a lot of comparative stats. More opinion than data. Maybe something was "lost in translation".
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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: 23 November 2021 at 22:16
Chicken and donuts



A77ii / Minolta 500 reflex
To see is to enjoy. To see beyond is to rejoice.

A77Mark II; A57; A850; A700; NEX 6; various film bodies and an ever-changing collection of lenses
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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 23:05
Originally posted by woodrim woodrim wrote:

It is hard for me to keep up with this thread. When I first asked about a mirror thread, I didn't expect a lot of company. I'm surprised but delighted that so many others are enjoying the lenses.

Leo: That Rubinar looks good. I see it come up for sale every now and then but it's always well above my safe spending limit. That, the Mirotar(s), and the Rokkor 250 will remain elusive.


Clearly this mirror thread meets a need!

The Rubinar is quite expensive but value for money I would say.

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.
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