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Chinese adaptors - warning shot!

Posted: Sun Mar 16, 2014 1:31 pm
by David Kilpatrick
Testing the Samyang 24mm tilt-shift lens on the A7R via a cheap Nikon fit adaptor, I noticed that my bright computer screen on my left side appeared to be causing flare across the shot.

Sure enough, the adaptor is not light-tight. It has a hole.

nikon-g-adaptor.jpg
nikon-g-adaptor.jpg (113.61 KiB) Viewed 2326 times


I think I can fix this with modelling clay, but really, it's something to look out for....

David

Re: Chinese adaptors - warning shot!

Posted: Sun Mar 16, 2014 4:13 pm
by Birma
Ouch! That is a bit a howler DK. Definitely one to be warned about. The first MD to. Nex adapter I bought was a cheaply eBay job and it inspired little confidence as it had a lot of movement. I next purchased a Fotodiox one; it cost nearly as much as the lenses but a completely different level of engineering - a great fit.

Re: Chinese adaptors - warning shot!

Posted: Sun Mar 16, 2014 4:41 pm
by Dr. Harout
David, did you experience any kind of light leakage with your a7r?

Re: Chinese adaptors - warning shot!

Posted: Mon Mar 17, 2014 1:28 am
by bakubo
I've been lucky. I have bought 3 cheap adapters and all 3 were perfect. That one you got is horrible though. All mine are for m4/3 though.

Re: Chinese adaptors - warning shot!

Posted: Mon Mar 17, 2014 3:25 am
by David Kilpatrick
I've sealed this one with black modelling compound I have owned for maybe 25 years... in my studio (used to support products on small black bases). I have bought one helical Leica adaptor (for closer focusing) from Cam2UK on eBay - would not infinity focus, returned for credit in December, still not refunded - do not deal with this seller under any circumstances they are not really in the UK and don't respond properly to communication.

For Leica M I found an affordable s/h Novoflex adaptor and I would only advise Kipon, Metabones, Novoflex, Voigtlander or similar adaptors .

Been out on Sunday trying to find some decent light and a modern architectural subject - seems the south of England/Midlands has had wonderful weather but we've had very poor cloudy light in Scotland and it was a wasted afternoon. I also realise just how little decent new building has happened in the last five years here. I had not really understood what an impoverished period this has been. All the interesting civic or public architecture dates back 10, 15, 20, 25 years. I was prevented from photographing Cameron Toll shopping mall in Edinburgh by a security guard, nice enough guy, chatted for a bit but his brief is stop all photography even of the exterior of the building from the car park.

Re: Chinese adaptors - warning shot!

Posted: Tue Mar 18, 2014 2:58 am
by Greg Beetham
The only thing that occurs to me is that filling the gap with some goo is going to make the operation of what looks like a release tab spring compression area more difficult perhaps. There should be a remaining metal wall on the inside, they just machined a slot right across when they made the spring/tab recess.
Greg

Re: Chinese adaptors - warning shot!

Posted: Fri Mar 21, 2014 1:20 am
by David Kilpatrick
This modelling compound is very hard and I've made a thin wall which seals all light, looks more or less like the metal, and does not impede the lock.