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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

 
Miranda1
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Feb 06, 2016 15:18 |  #7801

Maviesurmars wrote in post #17887960 (external link)
Hi everybody !
I wonder if a Sony A7 I (not II) with a Canon EF 300mm f4 is possible ? Thanks !

You might want to checkout the Fred Miranda site, there is a thread specifically on Canon Lenses and their ability to focus with the A7R2.


Sony A7R2
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xpfloyd
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Feb 06, 2016 17:32 |  #7802

Miranda1 wrote in post #17888368 (external link)
You might want to checkout the Fred Miranda site, there is a thread specifically on Canon Lenses and their ability to focus with the A7R2.

He's asking about the a7 mk1


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EOS-Mike
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Feb 08, 2016 18:13 |  #7803

I'm sure this has been talked about and asked about, so I apologize in advance.

I shoot with a Canon 6D and a few lenses (all Canon).

I'm contemplating which Sony A7s I'm going to get (version one or two). The cost difference is, of course, about a grand.

So, do all the canon lenses with IS continue to engage IS when mounted to the A7s? Obviously this doesn't matter with the A7Sii as it has that in-body stabilization (and I probably should just bite the bullet and get it).

The Canon body and lenses will continue to be my portrait rig for earning bucks (I shoot part time, mostly seniors, couples, etc.).

The Sony A7S (i or ii) will be working on film and tv sets as I get ready to build a second career as a unit still photographer. I don't want to get a sound blimp for my 6D. Plus, I need a second full frame body anyway.

Sorry for the long winded question. Just wondering how important the in-body stabilization is on the second A7S if my lenses can do it already.

Thank you.


Sony A7 III
All my Canon gear is on sale here.

  
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jocau
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Feb 08, 2016 18:57 |  #7804

Another thing to consider is the A7S only has lossy compression RAW files, while the A7SII also has uncompressed RAW files.


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EOS-Mike
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Feb 08, 2016 18:59 |  #7805

jocau wrote in post #17890862 (external link)
Another thing to consider is the A7S only has lossy compression RAW files, while the A7SII also has uncompressed RAW files.

Please explain. I'm unclear on what that means (as I've been a Canon shooter since 2008 and only occasionally use the Nikon D7000).


FYI: I know a lot about the video features of each, but don't foresee using video much if at all.


Sony A7 III
All my Canon gear is on sale here.

  
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SDB777
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Post edited over 3 years ago by SDB777.
     
Feb 08, 2016 19:39 |  #7806

Hmmm, sounds like some 'hating'.... There is nothing wrong with the AWR files from my a7


Sony a7ii - Sigma 12-24DG

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genesimmons
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Feb 08, 2016 19:53 |  #7807

EOS-Mike wrote in post #17890867 (external link)
Please explain. I'm unclear on what that means (as I've been a Canon shooter since 2008 and only occasionally use the Nikon D7000).

FYI: I know a lot about the video features of each, but don't foresee using video much if at all.


the newer mark 2 a series cams{not sure of the a711} have a new feature that u can turn on or off the compression for raw files in 14bit,the uncompressed files are huge though like really huge so have a large capacity sd card.


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Shadowblade
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Feb 08, 2016 20:07 |  #7808

The neon-lit gateway of Kabukicho, Tokyo, made famous through Japanese film and animation.

A7r with Canon 70-200, stitched for greater resolution.

Which do you prefer - colour or B&W?


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jocau
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Post edited over 3 years ago by jocau. (3 edits in all)
     
Feb 08, 2016 20:29 |  #7809

EOS-Mike wrote in post #17890867 (external link)
Please explain. I'm unclear on what that means (as I've been a Canon shooter since 2008 and only occasionally use the Nikon D7000).


FYI: I know a lot about the video features of each, but don't foresee using video much if at all.

Basically the A7S RAW files use a type of compression which can cause visible artifacts under certain circumstances. People complained about it and a petition was started here (external link). Sony finally did something about it by providing the owners of an A7II, A7RII and A7SII the extra option to use uncompressed RAW files. There are no artifacts here, but the files can be huge. This shouldn't be a problem for the A7SII since it only has a 12MP sensor, but the 42MP A7RII uncompressed RAW files are I believe 80-85 MB/file.

You can find more info/examples on the lossy compression RAW files of the A7, A7R and A7S here (external link), here (external link) and here (external link).

Edit: According to Brian Smith (external link) these are the file sizes:

- Sony a7SII Compressed RAW are approximately 12.65 Mb
- Sony a7SII Uncompressed RAW vary from 23.75-24.3 Mb

SDB777 wrote in post #17890913 (external link)
Hmmm, sounds like some 'hating'.... There is nothing wrong with the AWR files from my a7

Sony a7ii - Sigma 12-24DG
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Nothing "hating" to it. Get your facts straight next time before you accuse someone.


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Post edited over 3 years ago by advaitin.
     
Feb 08, 2016 22:10 as a reply to  @ EOS-Mike's post |  #7810

Yes, it is in the lens and it works. There may be times you want to turn it off, depending on the lens and what or how you are shooting. If you get a camera with IBIS and a Metabones adapter, you may only use Ibis or the IS, as best as I understand.


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genesimmons
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Feb 08, 2016 23:31 |  #7811

jocau wrote in post #17890953 (external link)
Basically the A7S RAW files use a type of compression which can cause visible artifacts under certain circumstances. People complained about it and a petition was started here (external link). Sony finally did something about it by providing the owners of an A7II, A7RII and A7SII the extra option to use uncompressed RAW files. There are no artifacts here, but the files can be huge. This shouldn't be a problem for the A7SII since it only has a 12MP sensor, but the 42MP A7RII uncompressed RAW files are I believe 80-85 MB/file.

You can find more info/examples on the lossy compression RAW files of the A7, A7R and A7S here (external link), here (external link) and here (external link).

Edit: According to Brian Smith (external link) these are the file sizes:

- Sony a7SII Compressed RAW are approximately 12.65 Mb
- Sony a7SII Uncompressed RAW vary from 23.75-24.3 Mb

Nothing "hating" to it. Get your facts straight next time before you accuse someone.


i didnt realize the file sizes were that small for the a7s,i believe the a7r2 file sizes are around 40mb compressed and over 80mb uncompressed,big difference than the a7s,


OLYMPUS EM1 M2. 12-100 F4 PRO.75mm f1.8,fisheye f1.8 pro. SONY A7 various manual lenses. FUJI X100
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xpfloyd
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Feb 09, 2016 01:03 |  #7812

Eos mike. Don't let raw compression dictate your choice. I shoot my a7rii with compression on and I am yet to see an artifact


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Maviesurmars
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Feb 09, 2016 08:52 as a reply to  @ advaitin's post |  #7813

OMG I found the good metabones adapter for my Canon EF 300mm F4 and the price is :rolleyes: !!! 649USD is really too much for me !!!
Thanks for all the answers !


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David ­ Arbogast
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Feb 09, 2016 09:56 |  #7814

xpfloyd wrote in post #17891184 (external link)
Eos mike. Don't let raw compression dictate your choice. I shoot my a7rii with compression on and I am yet to see an artifact

For standard "properly exposed" images this is true, however yesterday and was quite surprised to see a huge difference in underexposed images. This immediately tells me that if I want to do HDR bracketing then I may want to set the Raw to uncompressed for a cleaner HDR result:



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David ­ Arbogast
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Feb 09, 2016 09:58 |  #7815

Shadowblade wrote in post #17890938 (external link)
The neon-lit gateway of Kabukicho, Tokyo, made famous through Japanese film and animation.

A7r with Canon 70-200, stitched for greater resolution.

Which do you prefer - colour or B&W?

Both are great, but with all those vibrant signs color is preferred by me.


David | Flickr (external link)
Sony α7R II | CV 12mm, FE 12-24mm, Loxia 21mm, Loxia 35mm, FE 50mm ZA, Batis 85mm

  
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Sony A7 models with non-Sony lenses
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