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question regarding adapters

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I have an A6000 which I shoot with old Contax Zeiss and Nikon AIS manual lenses. I was considering the purchase of one of Sony's full frame A7 models. My plan was to rent one of these cameras and check it out, but I have a question. I've been using Fotga brand CY-NEX and Nikon-NEX adapters to use these lenses on my A6000. Can I use these same adapters on a full frame A7* camera without the picture being reduced to crop mode? I'm fairly certain these would work fine, but I wanted to be sure before renting the unit. Thanks in advance for responses.

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No new adapters needed, like Username already correctly pointed out, and Contax-Yashica and Nikon glass will work wonderfully on the full frame bodies (I use both brands on the original A7r, and assuming you haven't got a lemon in the first place, these "old" lenses are super sharp)

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I am using adaptors for a quite number of my C/Y Zeiss and other glasses, and for some medium format glasses on my A7 and A6000, but because of the weight, I have replace the flimsy Sony bayonet rings with more stable rings from Fotodiox.  Everything works fine now!

 

My recommendation, don't buy the very cheap adaptors, buy the better quality!   ;) 

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`    

   

If they're just empty tubes with no glass

in them then there will be no problems. 

    

  

`

Hi, my adaptor got glass inside and the a77 prompt some message which i could not proceed to use it manually. What's the next move? Is there a certain settings that i have to change?

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Hi, my adaptor got glass inside and the a77 prompt some message

which i could not proceed to use it manually. What's the next move? I

s there a certain settings that i have to change?

   

You are adapting SLR-mount to SLR mount and thaz a bad 

idea unless you just make small images for web pages.  

   

My reference to "glass" was in the context of THIS THREAD 

which is about adapting SLR-mount lenses to APSC bodies. 

In such a context, the glass is an image compressor ... you 

can google "Metabones SpeedBooster" to read about that. 

   

OTOH, the glass in you adapter is not an image compressor 

but merely a focus adjuster, the exact opposite of a "close up 

lens" cuz the thickness SLR-to-SLR adapters causes adapted 

lenses to focus to near-distances-only if the glass is omitted. 

IOW such an adapter functions as an extension tube as well 

as providing conversion from one SLR mount to another.   

    

It's all about the flange depth of the body, which differs slightly

from one brand to another [ google "flange distance" ]. Nikon 

lenses adapt to Canon bodies without need of glass, which by 

definition means the reverse is impossible [assuming that one 

expects normal focusing abilities in all cases]. 

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If an adapter to A-Mount has glass in it, it means the flange distance is too great. That means you'll only have close focus ability without the glass. Medium format lenses generally have longer flange distance, which means you can use them on A-Mount with a normal spacer adapter without glass.

 

What the glass does is generally to ruin the optical properies of the lens you are adapting by placing an alien piece of glass in the path of the light. So, it's pretty pointless if you do it for the quality of the lens.

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