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The Sigma 100-400mm C ...
I misunderstood, my fault. Anyway, yours is a good piece of information: for $30 my primary worry is that the thing falls apart just a couple of days after the warranty expires, but since you got it two years ago, it passed the test.  Smile


Sony a6300, Sony a6000, Sony NEX-6, Sony E 10-18mm F4 OSS, Sony Zeiss Vario-Tessar T* E 16-70mm F4 ZA OSS, Sony FE 70-200mm F4 G OSS, Sigma 150-600mm Æ’/5-6.3 DG OS HSM Contemporary, Samyang 12mm Æ’/2, Sigma 30mm F2.8 DN | A, Meyer Gorlitz Trioplan 100mm Æ’/2.8, Samyang 8mm Æ’/3.5 fish-eye II | Zenit Helios 44-2 58mm Æ’/2 
Plus some legacy Nikkor lenses.
Nope. This thing is massive, very precise and has even stopper screws. It's copied, but from experts. Anodization is flawless, the only issue with all those copied Arca rail is, they are better in the clamps with screw.


So, this type will work just fine:

[Image: SRB40_detail_1_326x326.png]


But here the problems begin


[Image: QRB50_detail_1_326x326.png]

Same goes for genuine Arca clamps - the mixture of the plates sometimes doesn't work because the copies are not quaility controlled with a gauge.


A question mark is not a question.


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