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Mike Ganz wrote:
I've been using the Novoflex adapter. But looking at the prices of those you linked, they're cheap enough to dedicate one to each lens. How is their performance with respect to infinity and hyperfocal distance?
Sorry I forgot to respond to two of your other questions.
I only have two "smart" AF adapters for Canon EF to Sony E, one Commlite (works best) and on Fotodiox (fair AF), but many "dumb" adapters for EF, FD, Nikon F, Minolta MC/MD and M645.
1) Infinity is generally fine. I've only got two adapters that give me problems of perfect infinity -- very close, but not there wide open, but manage it at smaller aperture such as f/8. One is with the Samyang 14, of which I own two, on in Nikon mount that doesn't reach infinity on the Sony (but is fine on Nikon bodies) -- even my Canon version is right on the line on with a different adapter (obviously). Neither are anywhere near the focus ring distance scale, either on the Sony or on the native mount bodies.
2) As mentioned above, distance scales on Alt lenses mounted on Sony can not be relied on for accuracy. With so many independent manufacturers of adapters, there is certainly some variation in register distance, and even fit of the bayonet lugs. The only way to be completely confident of focus depth and accuracy is to view stopped down in viewfinder or rear LCD.
Considering that I've owned at least 20 adapters for MFT and the Sony E mount, I'm very happy with the success rate of the inexpensive to moderately priced adapters I've used. I estimate around 5-8% don't fit quite right among them. But from reports I've read here, that applies even to some of the top names having problems.
Perhaps other people can add their experiences with the cheap "dumb" adapters.
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