Oh I see, so it can be closer than the registration point but not further away? Interesting.
Well, you want it to be at exactly the right distance. The issue is that if a lens expects the film/sensor 40mm away, but your camera has the sensor deeper than that below the mount, there's nothing you can do to bring it closer to match what the lens wants.
But if the lens expects the sensor at 40mm and your camera's sensor is only 20mm below the mount, that's no problem, all you have to do is add a spacer to move the lens 20mm further away from the mount, which is all those adapters do.
Oh I see, so the adapters come in different lengths so you can pick the right one or are they adjustable somehow?
Yes but not by or for Konica Minolta. They are Seagull in SR mount.
There are adaptors for M 42 to Nikon, it uses a balance lens to correct. I had one, for me too much distortion and vininted when 28 or shorter lens was used.
What I don't is, will a D40 work with a manual focus lens in stop down metering and will the shutter work. With lower end Pentax digtial bodies, they do work with MF lens.
Found this on Ebay.
View attachment 380025
Some digital cameras won't release the shutter unless a lens is attached, but most have an over-ride setting for this.
However, as Chan has pointed out, some camera won't activate the meter without a recognized lens attached. Maybe some cameras have an over-ride for that too -- or maybe some adapters can fool the camera into thinking a lens is attached.
My Sony DSLR will not, but I have a M42 adtport with a set of pins to fool the camera into thinking a lens is attached. I use with a M42 bellows for micro work.
I don't have that problem with my Sony DSLRs, but tell us more about this adapter. I have not heard of this.
So i can use my minolta mc and md lenses on a sony a-700 with no issues?
So i can use my minolta mc and md lenses on a sony a-700 with no issues?
XKAES, does your adaptor have glass balance lens?
No. Minolta lenses are all manual-focuses lenses and have an SR lens mount -- unless they are labelled "MAXXUM", "DYNAX" or "ALPHA". Minolta Maxxum lenses are auto-focus lenses and use Minolta's a-mount. The SR mount and the a-mount are completely different. Sony later bought Minolta and continued to use the Minolta a-mount on some of their cameras, and called it the Sony a-mount, but it is the same thing. (Sony also uses an e-mount which is different)
You can use Minolta manual-focus lenses on a-mount cameras (Minolta Maxxum or Sony digital) with an adapter. You cannot use a-mount lenses on Minolta SR mount cameras.
I use my Minolta manual-focus lenses on Maxxum and Sony auto-focus cameras all the time -- with an adapter (there are different types of adapters).
Here is link, I bought mine years ago, I think you can still find one on ebay. It is a M42 to A mount not MC/MD.
I started digital with a Sony A-700, and still use it. When I got back to analog, I went with Minolta since Sony and Minolta share a lens mount. Any Minolta (MC or MD lens) or Sony "A-Mount" (Early Sony digital models) have the same lens mount, however, the older MC and MD lens' are completely, or mostly manual. So, any Sony lens labeled as "A-mount" or any Minolta MC or MD will work without an adapter on a Sony A-mount lens digital camera.
Using those lens' on any other brand will, of course, require an adapter.
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