Sony A7II + Tamron 15-30 SP 2.8

[drasko2015]

A friend borrowed me his Nikon Mount Tamron 15-30 ultra wide lens, ive tried it for some shots on my A7II:

 

 

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[drasko2015]

2

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[DavJohnson]

Just curious did you find that the corners were softer when using the adapter with the Tamron 15-30, I was thinking about purchasing this lens but after looking at a few reviews I was wondering if that would be an issue ?

[Golem]

If the flanges on the adapter are in parallel planes,

no such problem. Any ultra-wide lens is extremely

vulnerable to a failure of parallelism, so you need

a good adapter. 

 

Lack of parallelism results in different areas of the

frame being focused to different distances. Some

will experience this as "soft" corners, and stopping

down does relieve this rather well. But the corners

are not actually soft. The are just sharply focused

at slightly different distances. A scene with depth

will often hide this. OTOH is could exacerbate it.   

   

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$   

   

Get a quality adapter. 3-figgers USD for a simple

"dumb" one, plus extra $$  for full connectivity and  

all the headaches that might bring :-( 

   

I borrowed a friend's $25 Fotasi adapter and it was

parallel, but for that price there may be sample to

sample variation. Also the rear flange and the latch

were not my idea of quality. So I got a MetaBones,

which also tested parallel, altho a tiny bit short of

exact length ... waaaaay better than too long, cuz

you can ignore that, or shim it. [i shimmed it.]

[DavJohnson]

Thank you , your information was quite informative. I own the fotodiox for Canon and I was thinking of purchasing the Tamron 15-30/2.8 and using this adapter for it.