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Official: Voigtlander 15mm f/4.5 III E-mount

  
 
mcbroomf
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p.6 #1Official: Voigtlander 15mm f/4.5 III E-mount
GMPhotography wrote:
Looks like a nice copy Mike. I'll find some sample images from mine I shot in NY . See how those corners look. Mike does yours have the petals on.

mcbroomf wroteThis is the test image I made with thew 15mm CV III M mount when I 1st got it. The link is to a 50% sized image if I recall correctly. Like Guy's, this copy seems to have very sharp corners. Taken at ~F9 on an A7R, a good distance away but not infinity. It was processed in LR with Auto CA on

Mike

http://www.pbase.com/mike_broomfield/image/159609836/original
http://m6.i.pbase.com/g9/63/551663/2/159609836.gWcj4KEb.jpg

Yep, still has the petals. I don't often use filters.

I forgot that there's a 2nd 50% sized image here
http://www.pbase.com/mike_broomfield/image/159611803/original

Apr 25, 2016 at 07:55 AM
GMPhotography
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p.6 #2Official: Voigtlander 15mm f/4.5 III E-mount
Choppy has been shipped overnight to Fred. Lol

Precious cargo
Apr 25, 2016 at 09:16 AM
rscheffler
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p.6 #3Official: Voigtlander 15mm f/4.5 III E-mount
Fred Miranda wrote:
It would be nice if Voigtlander published MTF graphs for their lenses.


Yes, would be great, but I think the most realistic solution to this lack of documentation is to nicely ask Roger at LR to generate the MTFs.
Apr 25, 2016 at 09:59 AM
Fred Miranda
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p.6 #4Official: Voigtlander 15mm f/4.5 III E-mount
mcbroomf wrote:
This is the test image I made with thew 15mm CV III M mount when I 1st got it. The link is to a 50% sized image if I recall correctly. Like Guy's, this copy seems to have very sharp corners. Taken at ~F9 on an A7R, a good distance away but not infinity. It was processed in LR with Auto CA on

Mike

http://www.pbase.com/mike_broomfield/image/159609836/original
http://m6.i.pbase.com/g9/63/551663/2/159609836.gWcj4KEb.jpg


Thanks for posting this Mike. This is another great example of how the VC15/4.5 performs great even at the edges. The branches follow the sagittal line but still great performance.
Apr 25, 2016 at 10:02 AM
Fred Miranda
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p.6 #5Official: Voigtlander 15mm f/4.5 III E-mount
rscheffler wrote:
Fred Miranda wroteIt would be nice if Voigtlander published MTF graphs for their lenses.
Yes, would be great, but I think the most realistic solution to this lack of documentation is to nicely ask Roger at LR to generate the MTFs.


I think Roger has a hard time testing ultra wides at infinity but I will ask.
Apr 25, 2016 at 10:03 AM
GMPhotography
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p.6 #6Official: Voigtlander 15mm f/4.5 III E-mount
Well I found some really good Choppy images. This one just seems to put all issues out on the left wing as it looks just about what you would expect. Im in NY here , Times square and obviously not infinity but i consider a lens like this infinity after about 100 feet but thats me but check this out. Im impressed with the extreme corner. I lifted the shadows upper right corner










Apr 25, 2016 at 11:24 AM
GMPhotography
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p.6 #7Official: Voigtlander 15mm f/4.5 III E-mount
My guess most likely f5.6 it was fairly much in the shadows. So my point being here this is not looking like anything we are seeing out of Freds three copies he is testing. There is NO smearing i can see

Got a couple more working on them now
Apr 25, 2016 at 11:25 AM
GMPhotography
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p.6 #8Official: Voigtlander 15mm f/4.5 III E-mount
If you look very carefully , I put myself in the shot.
Apr 25, 2016 at 11:28 AM
GMPhotography
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p.6 #9Official: Voigtlander 15mm f/4.5 III E-mount
Brooklyn Bridge. Bottom left. My guess F8









Apr 25, 2016 at 11:30 AM
GMPhotography
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p.6 #10Official: Voigtlander 15mm f/4.5 III E-mount
More. Lower right









Apr 25, 2016 at 11:33 AM
 


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rscheffler
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p.6 #11Official: Voigtlander 15mm f/4.5 III E-mount
Fred Miranda wrote:
It would be nice if Voigtlander published MTF graphs for their lenses.

rscheffler wrote:
Yes, would be great, but I think the most realistic solution to this lack of documentation is to nicely ask Roger at LR to generate the MTFs.

Fred Miranda wrote:
I think Roger has a hard time testing ultra wides at infinity but I will ask.


It would be great if he could... I'm actually hoping to see MTFs for all of the Voigtlander lenses. It would fill a current information void.
Apr 25, 2016 at 11:56 AM
GMPhotography
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p.6 #12Official: Voigtlander 15mm f/4.5 III E-mount
Another sample. Okay this is maybe a 50 story building. Thats Infinity.

Upper left than lower left and i really lifted the shadows. Thats pretty darn good














Apr 25, 2016 at 11:58 AM
GMPhotography
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p.6 #13Official: Voigtlander 15mm f/4.5 III E-mount
Well don't want to bore anyone anymore but as you can see it can do extreme corners. Im hoping Fred can see where the issue is on his testing with this versus the copies he has. Im baffled myself. FYI mine is less than a year old and bought it new from Cameraquest
Apr 25, 2016 at 12:07 PM
gyoung143
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p.6 #14Official: Voigtlander 15mm f/4.5 III E-mount


jhinkey wrote:
Fred Miranda wrote
Brandon Dube wroteEasy way to test for astigmatism, if when you focus there is a point where sagittal features are sharp and another where the tangential features are sharp, that is astigmatism.
In theory it's easy but at the extreme edges of an 15mm ultra-wide (18mm to 21.6mm from center) with lower contrast and very strong vignetting it's not. To make it harder, there are very little changes in focus at 12x magnification when slightly moving the CV 15 focusing ring.
But yes, I agree, it should focus on the sagittal or meridional lines if it's indeed astigmatism. Like you wrote, it could also be other aberrations in place. There is moderate LaCA towards the edges with the CV15 even when stopping down.

It would be nice if Voigtlander published MTF graphs for their lenses.
I'm not alone then with difficulties focusing my 15/4.5 on my A7RII!
Unlike many of my other lenses that are very very obvious when peak sharpness is reached (I'm even talking about my 16/3.5 AI fish that clearly has a peak infinity sharpness), the 15/4.5 has a broad range of focus turn that all appear to be pretty close in sharpness in the center of the frame - never really looked in the corners while focusing to make sure they are "optimal".

I'm still interested in the native E mount version just for convenience of having the focal length/aperture in the EXIF.

-
...Show more →

I have the original v1 of the 15mm, and have had for 20yrs. I have used it quite a lot on the nex 6 and with that I do just the same as I did with the M3 and M6, I simply use the focus scale, and hard stop for infinity shots, its not coupled to the rangefinder anyway. You need an adapter with correct register of course but I wouldn't want to use anything else personally. Should surely be the same with the new one? especially the E mount version. The original is pretty useless on the A7 of course, the colour shading and light fall off in the corners can be sorted but the loss of sharpness cant, I have been waiting to see if the E mount is any different to the M mount before deciding whether to change.

Gerry
Apr 25, 2016 at 12:36 PM
pdmphoto
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p.6 #15Official: Voigtlander 15mm f/4.5 III E-mount
Guy your samples look very good to the corners. I wonder if it is adapter related. I don't think the lens has floating elements, but I have seen some of my lenses that don't (for instance the Rollei/Zeiss 18/4) have their corner performance affected using different adapters. Obviously, no adapter on the e-mount sample Fred has though
Apr 25, 2016 at 12:37 PM
rscheffler
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p.6 #16Official: Voigtlander 15mm f/4.5 III E-mount
Very interesting, Guy.

FWIW, I also have this lens in M mount, but shoot it on the M240. I need to revisit my tests from last year but think my results are closer to Fred's. And from what I've seen it's possible this lens performs slightly better on Sony than Leica. I also have the previous version. In respect to across-frame sharpness I don't recall seeing much difference, but vIII has better distortion correction, and of course, no color shift.


Apr 25, 2016 at 12:39 PM
GMPhotography
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p.6 #17Official: Voigtlander 15mm f/4.5 III E-mount
pdmphoto wrote:
Guy your samples look very good to the corners. I wonder if it is adapter related. I don't think the lens has floating elements, but I have seen some of my lenses that don't (for instance the Rollei/Zeiss 18/4) have their corner performance affected using different adapters. Obviously, no adapter on the e-mount sample Fred has though


I had a Metabones which has been sold and using a cheap Fotasy I think its called. Yesterdays test where with the Fotasy and i believe these where as well because i had the metabones on the CV 35 1.7 when in New York.
Apr 25, 2016 at 12:43 PM
GMPhotography
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p.6 #18Official: Voigtlander 15mm f/4.5 III E-mount
rscheffler wrote:
Very interesting, Guy.

FWIW, I also have this lens in M mount, but shoot it on the M240. I need to revisit my tests from last year but think my results are closer to Fred's. And from what I've seen it's possible this lens performs slightly better on Sony than Leica. I also have the previous version. In respect to across-frame sharpness I don't recall seeing much difference, but vIII has better distortion correction, and of course, no color shift.



Yea they updated everything in Version III
Apr 25, 2016 at 12:44 PM
GMPhotography
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p.6 #19Official: Voigtlander 15mm f/4.5 III E-mount
The last crop on bottom left with the street corner is a dead giveaway there is no smearing going on. I can see the cracks in the sidewalk. so there is no blurring at all.
Apr 25, 2016 at 12:46 PM
Phillip Reeve
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p.6 #20Official: Voigtlander 15mm f/4.5 III E-mount
There is clearly quite a bit of astigmatism in the upper left corner and the lower left one isn't a very good target to judge it because the structures are mostly saggital
Apr 25, 2016 at 12:52 PM


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