dave hokanson wrote:
Is there a digital camera body that will accept lenses from a Minolta SRT 101?
Dave
Yes, there are adapters... both good and bad.
GOOD.... Adapters are available that allow vintage Minolta SR/MC/MD lenses to be used on various modern
mirrorless cameras (MILC) are glassless. They need no optics, so the lenses will work pretty well... except that they will be manual focus AND manual aperture. The adapters allow the lenses to be used on Sony E-mount, Fujifilm X-mount, Canon EF-M and Micro 4/3 mount (Olympus and Panasonic).
BAD... Adapters to allow those old Rokkors to be fitted on
modern DSLRs all have optics, which are typically cheap junk in affordable adapters and can be expected to spoil image quality. Those optics are needed to allow the lenses to focus to infinity. The optical element(s) may be removable in some cases... either by design or not... improving image quality but no longer allowing the lens to focus all the way to infinity. That may be okay in some cases. For example macro lenses and very powerful telephotos rarely need to be focused all the way to infinity. Very wide angle lenses with great depth of field also may not need to focus all the way to infinity. All other lenses used with "glassless" adapters would be partially usable... for close work, but unable to focus on more distant subjects.
The reason for this is that all the mounts use different lens "register". This is the distance between the mounting flange of the lens and the film/sensor plane. It's the distance at which the lens is designed to focus the image. Mirrorless cameras use very short register, which leaves plenty of room for an adapter without any need for "corrective" optics. DSLRs, on the other hand, use a longer register that in many cases leaves no room to fit an adapter.... Doing so places the lens farther from the film/sensor plane than the lens is designed to work with, so "corrective" elements are incorporated in the adapter.
Minolta MD/MC/SR lenses have a 43.5mm lens register. All the modern mounts are longer in use today on DSLRs have a longer register: Nikon 46.5mm, Pentax P/K bayonet 45.5mm, Sony A-mount 44.5mm, and Canon EOS/EF 44mm. As you can see, with these there's simply no room for a glassless adapter between lens and camera. You WILL find adapters being offered that are able to fit the lens to the camera, but it's very likely you won't be happy with the resulting images due to the poor quality optics.
So your best bet would be one of the mirrorless cameras, all of which use a "short" lens register that allows lots of room for a glassless adapter in between camera and lens... Fujifilm X: 17mm (not to be confused with Fujica X-mount, which is an old SLR system), Sony E-mount: 18mm, Canon EF-M mount: 18mm, and Olympus/Panasonic m4/3 mount: 19.25mm. There's probably an adapter for the Nikon 1 mirrorless system with it's 17mm register, but Nikon is discontinuing that line of cameras and saying they will be introducing a different mirrorless system in the future. I don't think Pentax is making a mirrorless system right now, either.
Adapted lenses will, of course, be manual focus only. Aperture control also will be manual only, using the ring on the lens itself. The lens will actually stop down, which would dim down an optical viewfinder, making focusing more difficult at smaller apertures. However, the electronic viewfinder and/or LCD screen used on most mirrorless cameras will likely be able to compensate for this. On most cameras you'll need to use either Manual exposure or Aperture Priority auto exposure (Shutter Priority and Program AE will not be usable... neither will any of the highly automated "scene modes"). Also, the camera will not "communicate" with the lens, so there won't be any EXIF data recorded. Camera may need to be set to "shoot without lens installed" too, since it doesn't "know" the lens is there.
A side note.... which you might already know: Most of the modern digital systems mentioned above use sensors that are smaller than the image area those vintage Rokkors were designed to cover (24 x 36mm on 35mm film). As a result the old Rokkors will "act longer" than they did on the film cameras for which they were intended. Many of the Sony mirroless, all the Canon and all the Pentax use so-called "ASP-C" sensors and on them the Rokkors will "act" 1.5X or 1.6X "longer". For example, a 50mm lens (which is still a 50mm lens) will no longer act as a "normal". Instead it will behave like a 75mm or 80mm short telephoto would on the SRT 101 camera (the focal length of the lens doesn't actually change... but the way it "behaves" does). Oly and Panasonic sensors are even smaller... so any given focal length will behave as if it's 2X longer. On them that same 50mm would "act like" a 100mm would on the film camera. All this is great if you are working with telephotos... they are more powerful than ever before. But the opposite is true of wide angle lenses.... on the smaller sensor digital cameras they will simply no longer act as wide as they were on the larger format.
Right now only Sony is making "full frame" mirrorless digital cameras (well, actually, I think Leica is, too... but you might not like the price). On those, the lenses would "behave" the same way they did on the old film camera. Nikon and Canon are talking about producing a full frame mirrorless too, but those are just wishful thinking at this time (and, if they ever do, there's no way to know what lens register they'll use.... current owners like myself hope they will use the same as their DSLRs, since there is little benefit to using a short register on a full frame MILC... OTOH, if they use the same as their DSLRs, we'll be able to use out existing lenses without need for any adapters).