Horrible vignette?

[mSchuhmann]

Hello gang, thank you for the ad.

I'm shooting with an a7ii and using a Fotiox adapter with Olympus OM manuel focus lenses.

For some reason I'm getting this very heavy vignette on one side when shooting wide open.

I just ordered a Metabones adapter, hoping it might be this cheap one.

 

Anyone have any idea what could cause this?

 

Thanks,

michael

 

 

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[addicted2light]

My guess you got an old adapter (old = pre full frame) made for the Nex series, that "covers" only APS-C (or, obviously, a faulty one).

[Guest Peter Kelly]

Just for my own interest, is your first sample the whole frame, or have you cropped just a corner to show the vignette?

If it is the whole frame then it is very odd indeed and I could only guess at some form of 'in lens mask' has slipped out of position, but I'm not aware of any such part.

[mSchuhmann]

Just for my own interest, is your first sample the whole frame, or have you cropped just a corner to show the vignette?

If it is the whole frame then it is very odd indeed and I could only guess at some form of 'in lens mask' has slipped out of position, but I'm not aware of any such part.

Both files are untouched, not cropped. I have checked my settings and turned off "front curtain sync" we'll see what does. But like I said If I shoot at 5.6 it's fine, it only happens when wide open.

[mSchuhmann]

My guess you got an old adapter (old = pre full frame) made for the Nex series, that "covers" only APS-C (or, obviously, a faulty one).

I bought it on Amazon: http://www.amazon.com/gp/product/B003Y33QMY?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00

It says "a7, a7r, nex-7 nex-5

[addicted2light]

I bought it on Amazon: http://www.amazon.com/gp/product/B003Y33QMY?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00

It says "a7, a7r, nex-7 nex-5

 

 

Then I'd say you got a faulty one. Maybe it keeps the lens heavily decentered, and that's the reason you see the vignetting only on one side. If I were you I'd return it.

[mSchuhmann]

PROBLEM SOLVED!! It was the "front curtain sync", needs to be OFF!!

However, with it in the off mode it seems to be a bit slower, a little bit more lag.