ebookman wrote:
Experiment with A7r and low cost Minolta 75-300mm AF F/4.5-5.6 zoom. To begin with, this lens needs the Sony LA-EA4 Nex adapter to work as designed on the A7r. The problem is that the adapter cost four times more than the lens. This is OK if you have a heavy crate full of Minolta AF lenses but pricey for one or two lenses. The first thing I tried was to use a cheap ebay adapter without any electronic coupling whatever. This did not work due to internal flare and vignetting on top of that. I had also tried an LA-EA2 adapter which did pass through EXIF data and allow shutter speed selection but would not do full frame correctly even when I removed the internal cropped sensor black plastic baffle and turned off the auto sensor. I was again rewarded with vignetting just like the cheap ebay adapter, but now with EXIF data. I guess it is nice to know the A7r does correctly spot the LA-EA2 adapter as a cropped device. Finally, I decided to use the adapter the way it was designed. I had read in a lens review that the Minolta 75-300mm AF F/4.5-5.6 zoom was at its best at F11 and 200mm into the 300mm zoom range. Final solution, use the cropped mode, set the lens to F/11 at 200mm and get a smaller image file that effectively looks like 300mm on a full frame. Here are the results in bright high contrast direct sunlight.
I wonder how the LA-EA3 adapter might have served your needs as it does not have any glass elements in it. You wouldn't have any AF functions but it might be simpler in its design with less to interfere with the final image(?)
(I have been playing with the Canon 100-400 L IS lens using the Metabones III adapter & before adding the flocking material had a bit of internal flare. I think that is better now but still have a feeling that the contrast suffers a little compared with using it on a Canon body...)
last days of spring, we are entering the new season and the length of daylight will soon reach its peak, love this time ... a little before sunset, just after storm and hail, I took some Minolta lenses and tried to record the damage to my plum tree. All wide open.
Unlike his big brother f1,8, do not always like 2,8/35mm bokeh, as is well known, depends very much on the background, I prefer first one of this 1966 7 lens-6 groups lens (HG).
I wonder how the LA-EA3 adapter might have served your needs as it does not have any glass elements in it. You wouldn't have any AF functions but it might be simpler in its design with less to interfere with the final image(?)
(I have been playing with the Canon 100-400 L IS lens using the Metabones III adapter & before adding the flocking material had a bit of internal flare. I think that is better now but still have a feeling that the contrast suffers a little compared with using it on a Canon body...)
-evan
I think the LA-EA3 adapter might well solve the problem but it cost almost as much as a good Canon FD lens and the old FD's are looking good and don't appear to have the internal flare issues even on cheap adapters.
Hope to be joining the crew soon - A7 and FE 35 incoming hopefully by this Saturday. If all goes well, I'm putting my Fuji kit on the chopping block (no fault of Fuji, I love it - but I have FF / MF itch).
