sandycrane wrote:
Except for the "buy and sell" forum the search function on FM is very poor.
Agreed. Best to use a search engine instead. Entering the search string “90mm f/2.8 APO-Skopar site:fredmiranda.com” into the search engine of your choice yields this thread as the top result.
sandycrane wrote:
Except for the "buy and sell" forum the search function on FM is very poor.
genji wrote:
Agreed. Best to use a search engine instead. Entering the search string “90mm f/2.8 APO-Skopar site:fredmiranda.com” into the search engine of your choice yields this thread as the top result.
or you can use the google search located at the bottom of forum pages:
Jul 13, 2022 at 03:58 PM
Steve Spencer Offline • • • • • • • Upload & Sell: On
I got my new eyeglasses prescription this week, so I can focus more precisely with the rangefinder (I find I need my best prescription to focus a 90mm lens well). I am not seeing any consistent front focus or back focus when I focus with the rangefinder and switch to live view with my M10. Sometimes I am slightly front focussed. Sometimes I am slightly back focussed, but for me that is typical with a 90mm lens using the rangefinder for focus. I am shooting the types of objects I usually shoot which mean 5 to 15 feet away. Perhaps I am just lucky and got a VM 90 f/2.8 APO that is properly calibrated for my camera or perhaps I just can't use the rangefinder with a 90mm lens well enough to notice that the calibration is off. Either way I am really happy with my lens on the M10.
I will continue to use the lens the way I normally do, which means a bit of focus bracketing with a 90mm lens, and I will report back if I notice any calibrations issues, but so far so good with my copy of the lens.
I’ve been using my app-skopar for a couple of weeks now and can say that it is the best 90mm I’ve tried in backlight situations. Sun in frame and more importantly just out of frame. I shoot this way a lot and this lens is better than: ZM 85/4, Leica 90/4 m macro, zeiss contax 90/2.8, tele-elmarit 90/2.8…
90mm tend to be poor with flare - I was once told that it was due to have a long tube with no glass at the end. The apo-skopar has a element quite far back.
One other thing to add is that the pics from this and the 50mm apo go well together. I’m not saying the 90 is as good as the 50 but they don’t lookout of place together.
mard22 wrote:
I have heard this lens works properly with no front/back focus issues on an M11, but not on M10 models. Is this true?
My M11 has been professionally calibrated a few weeks ago and the Voigt 90mm/2.8 is spot on. I do not see why it would be different with the M10.
I've never noticed differences between the M models except for the fact that the M8 and M9 tolerances were sometimes not tight enough to focus 75mm and 90mm reliably.
But rangefinder lens calibration is a real issue especially with digital Ms. For instance, I had to remove the smallest shim inside both my 50mm/1.5 Voigt for them be ok. Never found how to do it with the 50mm/1.2 though.
Ripolini wrote:
I have scrutinized the 6 Mpix (3040x2041) file and I feel that the trees at the left side of the image are less sharp than those on the right ...
Yes, I checked it now on the noctons 50/1.2 and 75/1.5, because I have them with me and left-up corner is worse. When a push-up a little lens is ok. The 7artisans adapter has some loose and it is problem. You have macro functions but the adapter is not so rigid. In the evening I will check on a rigid adapter.
I don't know why this is happening. However, the 7artisans adapter has slack but when I move the lens, only one corner does not change, but all of them, so it doesn't really matter. I did a thorough comparison today with another adapter and I see no difference. Maybe when I took the picture. I had the matrix stabilization set wrong and the left side less sharp or actually with such a close-up it is GO. It's 90mm and at 2.8 the further left planes are slightly less sharp. https://www.flickr.com/photos/193822871@N06/52889628061/in/dateposted-public/
In my possession since yesterday. The lens is really ingenious. Beautifully compact and much sharper than I had assumed after some posts in forums or YT videos. Open aperture + 200% zoom in the middle and the image would still be crisp :o
Anyone got a Voigtlander 90mm f/2.8 APO-Skopar that's perfectly calibrated with the rangefinder? I've attempted three copies so far, but they all had slight calibration issues. I might give it another try.
May 17, 2023 at 09:46 AM
Steve Spencer Offline • • • • • • • Upload & Sell: On
Fred Miranda wrote:
Anyone got a Voigtlander 90mm f/2.8 APO-Skopar that's perfectly calibrated with the rangefinder? I've attempted three copies so far, but they all had slight calibration issues. I might give it another try.
Hi Fred,
Mine is as far as I can tell. I love the size and the general performance of the lens. Still go back and forth about upgrading to a Leica M 90 cron APO, but this one is so easy to add to the bag without hardly noticing and that won't be true of the Leica. For landscapes I have the Zeiss ZM 85 f/4, and if I want shallow depth of field I also have the Zhong Yi 90 f/1.5. At times I think it is a little silly to have all three lenses, but for now anyway they serve very different purposes and never end up in the bag together.
If you want to borrow my CVM 90 f/2.8 APO, I would be happy to send it to you for awhile.
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