![]() The only one that was made nicely was the FD-NEX adapter. PK-NEX adapter had light leaks and the m42-NEX had casting burs all over the place. If you consider how far off the OP's lens is, its far likely that the lens is the issue.Īs far as Fotga goes, I have had 3 of their adapters and two were manufactured poorly. They are a touch heavier, but the length is both consistent and correct. I've had one which was pretty much the same and the lens I've mounted on it was fine-tuned by me on the proper adapter. M42 -> Sony E adapters are notoriously bad. center button to zoom, then you could use the control dial to zoom in and out, then center button to exit the zoom mode. ![]() An option to return to how the NEX-7 handled playback, ie. An option to return the focus assist zoom to one button press More peaking options, being able to set peaking sensitivity and a threshold level. Customize the display screen layout, I'd love to have both Histogram and level at the same time. Still waiting for the minimum shutter speed with auto ISO for my NEX-7 and A7r. One photographers junk lens is an artists favorite tool. Or it could be the adapter is the culprit, you could measure the adapter thickness/length to see how accurate it is, they are typically to short/thin on purpose, but QC tolerance may add to that error, if the adapter is out, you can shim them if the mount invert is held in with set screws(typically 3), some adapters are solid and you can't shim them easily. You can see the shim in this pic, the optical block unscrews from the helicoid quite easily. To shim the lens/adapter you'll need to figure out the thickness you need, if you have access to a set of calipers, focus the lens so that infinity is sharp, measure the length of the lens, then turn the focus ring to the infinity stop and measure it again, the difference is your shim thickness, you can estimate it and do the trial and error method if you don't have calipers.Ĥ4-2 lenses have a shim ring between the helicoid and optical block from the factory, your's may be missing, If you can focus past infinity, you are definitely losing some close focus range. ![]() ![]() 20 & infinity left on the focus dial to keep on going.Ģnd question, does the focus stop at the infinity symbol? If it does, then the lens or adapter will require a shim. Go any further and it starts going out of focus again.įirst question, is the focus distance and indicated distance the same? Sounds like it isn't. Something I've noticed is how the infinity focus point is around 3.5. I got a helios 44-2 that came with a m42 - sony E adapter. If you have a old m42 camera, or even a Pentax SLR with a m42 to K-mount adapter you can check if the scale is off. This is why I would not blame the adapter yet, but the lens. It is true that you are not getting as close as it should. However, it looks as though someone has tampered with your copy of the Helios and did not properly calibrate the distance scale because the scale is so far off. Most adapters I have encountered are deliberately made short so that infinity focus is guaranteed (as long as you have a simple adapter, aka not any special adapters like helicoid adapters or even focal reducers). Is there a m42 adapter that has the right focus points, or is it just part of the territory of adapting lenses and there is not much you can do about it? I'm guessing because of this, it cannot focus as close as the lens is capable of. 20 & infinity left on the focus dial to keep on going. Go any further and it starts going out of focus again.
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