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FORUMS Sony Cameras, Lenses & Accessories Sony Cameras 
Thread started 24 Feb 2014 (Monday) 08:30
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Sony A7 models with non-Sony lenses

 
Eddie
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Jan 17, 2015 05:07 |  #5296

The voigtlander 12mm looks like an interesting lens. Some very nice images on that flickr page you posted david. I hadn't even heard of it until the last few pages of this thread. That's a few voigtlander lenses that have caught my attention recently, the 40mm f/1.4 being another


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Jan 17, 2015 11:44 |  #5297

Kiron 70-150 f4 Macro (MD mount) / A7R ($15! on eBay)

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advaitin
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Jan 17, 2015 17:12 |  #5298

No visuals to post with this, just the facts.
The Voigtlanders 12mm f5.6, 21mm f1.8, 25mm Zeiss f2.8 and V. 35mm f1.2 have noticeable vignetting, a very minor bit at the fringe of the V. 50mm f1.1 and none with the V. 75mm f1.8.
With the vignetting comes a color shift, which is consistent and to my eye seems purple. I have not checked how much the vignette and color shift may change with stopping down, but I suspect there will be some decrease.
Infinity focus is variable between the lenses. Today I took just one adapter, the Hawk heliocoid mount locked for infinity and checked each lens with its focusing ring at the infinity block. It appears that the 35mm f1.2 at wide open loses focus at 20 feet or so. The 50mm f1.1 reaches past 25 feet and all but the 75mm fall between the 35mm and the 50mm. The 75mm Classic focused on anything I could see through blocking shrubbery. Of course that in-focus zone changes with stopping down and, as you can see in my Spanish samples from the 35mm, the one with the worst wide open infinity stop distance, that exposures in good light stopped down provides all the sharpness you might want.
The test today was run with the A7R. I suspect there are many variables at play. I have acquired a number of commonly available LM to Sony E-mount adapters, including the VM close-focusing heliocoid. I have on order a new and a used Novoflex. I'll check these in the future to see if one mount is better or worse than the next.
Lastly, I was about to return the Zeiss Biogon, but changed my mind after the focus, vignette and color shift comparisons because on my monitor I saw little difference from the other wide angles--the Zeiss did focus to 25 feet wide open, of course that was f2.8 against 1.1 to 1.8 lenses. Since I had the Zeiss all packed up for return I shot a series of images, each a pair with one exposure at f2.8 and the second at f5.6. The first set was with bare glass, the second set with a B+W XS MRC 10 filter and the last set with the lens shade on.
What do you know? Wide open the image was visibly sharper without the filter. At f5.6 you could discern a slight edge, but not as much as at f2.8. There was no color difference that I could see.
As an inveterate filter user, I may have to rethink my priorities.


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BrandonSi
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Jan 17, 2015 17:42 |  #5299

advaitin wrote in post #17387266 (external link)
No visuals to post with this, just the facts.
The Voigtlanders 12mm f5.6, 21mm f1.8, 25mm Zeiss f2.8 and V. 35mm f1.2 have noticeable vignetting, a very minor bit at the fringe of the V. 50mm f1.1 and none with the V. 75mm f1.8.
With the vignetting comes a color shift, which is consistent and to my eye seems purple. I have not checked how much the vignette and color shift may change with stopping down, but I suspect there will be some decrease.
Infinity focus is variable between the lenses. Today I took just one adapter, the Hawk heliocoid mount locked for infinity and checked each lens with its focusing ring at the infinity block. It appears that the 35mm f1.2 at wide open loses focus at 20 feet or so. The 50mm f1.1 reaches past 25 feet and all but the 75mm fall between the 35mm and the 50mm. The 75mm Classic focused on anything I could see through blocking shrubbery. Of course that in-focus zone changes with stopping down and, as you can see in my Spanish samples from the 35mm, the one with the worst wide open infinity stop distance, that exposures in good light stopped down provides all the sharpness you might want.
The test today was run with the A7R. I suspect there are many variables at play. I have acquired a number of commonly available LM to Sony E-mount adapters, including the VM close-focusing heliocoid. I have on order a new and a used Novoflex. I'll check these in the future to see if one mount is better or worse than the next.
Lastly, I was about to return the Zeiss Biogon, but changed my mind after the focus, vignette and color shift comparisons because on my monitor I saw little difference from the other wide angles--the Zeiss did focus to 25 feet wide open, of course that was f2.8 against 1.1 to 1.8 lenses. Since I had the Zeiss all packed up for return I shot a series of images, each a pair with one exposure at f2.8 and the second at f5.6. The first set was with bare glass, the second set with a B+W XS MRC 10 filter and the last set with the lens shade on.
What do you know? Wide open the image was visibly sharper without the filter. At f5.6 you could discern a slight edge, but not as much as at f2.8. There was no color difference that I could see.
As an inveterate filter user, I may have to rethink my priorities.

Good info! I did notice a bit of vignette on my Nokton 35 1.2 (w/ A7R + Voigtlander close focus adapter) but never any color shift.. though I primarily used it on the M-E, so I'll have to go back and double check that. There were two versions of the Nokton 35 1.2 ASPH.. Do you know which you tested? I believe the ASPH II had a silver filter ring whereas the I had a black filter ring.

Thanks for sharing the results!


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Post edited over 6 years ago by advaitin.
     
Jan 17, 2015 18:08 as a reply to  @ BrandonSi's post |  #5300

I have version II. Vignetting is less than the 28, 21 and 12 but it is there wide open and color shift hits the very edge of the image. I've been very happy with this lens and I rarely use it wide open, although among the first images I shot was a friend's young daughter and you can see that in a portrait situation the lens performs well.

Here's the link to the gallery shot: https://photography-on-the.net …0200&mg=9885&i=​i150292310


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Jan 17, 2015 19:05 |  #5301

advaitin wrote in post #17387325 (external link)
I have version II. Vignetting is less than the 28, 21 and 12 but it is there wide open and color shift hits the very edge of the image. I've been very happy with this lens and I rarely use it wide open, although among the first images I shot was a friend's young daughter and you can see that in a portrait situation the lens performs well.

Here's the link to the gallery shot: https://photography-on-the.net …0200&mg=9885&i=​i150292310

Nice capture! It's a fantastic lens.. a bit heavy, but not bad compared to some of the L lenses.


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Jan 17, 2015 20:45 |  #5302

advaitin wrote in post #17387325 (external link)
I have version II. Vignetting is less than the 28, 21 and 12 but it is there wide open and color shift hits the very edge of the image. I've been very happy with this lens and I rarely use it wide open, although among the first images I shot was a friend's young daughter and you can see that in a portrait situation the lens performs well.

Here's the link to the gallery shot: https://photography-on-the.net …0200&mg=9885&i=​i150292310

Is the color shift there even when used on the a7S? I read in a few places that this problem was either absent or far less prevalent with the a7S.


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Jan 17, 2015 20:56 |  #5303

A7R+FE70-200 at 200mm F5 ISO100 1/200th sec. Natural light.

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| VINZ - SONY A7RIV/A73//A6000/FDR-X3000 | Sigma105 | FE1635F4 } Tamron 17-28 Tamron 28-75 | FE50F1.8 | SEL30mm F3.5 Macro |
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Jan 17, 2015 21:35 |  #5304

vinmunoz wrote in post #17387501 (external link)
A7R+FE70-200 at 200mm F5 ISO100 1/200th sec. Natural light.

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Wow, that is an awesome portrait. Love the choice of background, framing, generally monochromatic rich warm color, posing, and all-around coolness factor. Nice work. :)


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Jan 17, 2015 22:01 |  #5305

David Arbogast wrote in post #17387538 (external link)
Wow, that is an awesome portrait. Love the choice of background, framing, generally monochromatic rich warm color, posing, and all-around coolness factor. Nice work. :)


Thank you David. Really appreciate it.


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Jan 17, 2015 22:36 as a reply to  @ EverydayGetaway's post |  #5306

I plan to run another comparison on the S, it might be a day or two.


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Jan 18, 2015 03:56 |  #5307

Sony A7R + FE70-200mm @138mm F5.0 ISO100 1/400thsec

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Post edited over 6 years ago by advaitin.
     
Jan 18, 2015 12:40 |  #5308

Now for something totally different A Canon FD f4 28mm to 85mm adapted to the Sony A7R. It has a macro focusing ability and some CA, especially at the sides at 28mm. Once again there is no provision to list some lenses correctly, so I chose the closest EF lens to the same lens range.


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Jan 19, 2015 16:20 |  #5309

From my visit to the Palm Springs Air Museum today. The bomb bay from "Miss Angela". Shot with the Canon 17-40 which I used for all the interior shots.

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The bombardier's chair. The navigators table is on the left.

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Jan 20, 2015 01:55 |  #5310

A7R+Classic Nikkor 135mm F2 at 1/320 ISO100 F2 Natural light

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