Golly Gee, some stunners here. My turn to toss a couple into the ring, something a little different too.
I have been slowly, quietly acquiring a small selection of affordable R series lenses, to mainly accompany the Leicaflex addiction I seem to have picked up.
I decided to try them on a modify Canon EOS550D (also known as the T2i). This has been "full spectrum" modified.
I normally use the Canon on the end of an astronomical telescope, but thought I'd try a couple of lenses.
The two I tried were the Summicron 50 (V1) and the Macro Elmar F4. In the case of the Summicron I stopped the lens down to F4, and the Macro Elmar I went to F5.6. The Summicron showed quite a bit of coma at full aperture, too much to be satisfactory. The Macro Elmar was more forgiving, and the stop down was more a precaution.
The picture of Crux was taken with the Summicron, and as Crux was heading towards the western horizon. There is a bit of light pollution gradient in the right hand side, and I actually have cropped a chunk of this off.
Scorpius was directly overhead, and this didn't show the same light pollution, fortunately.
Both were taken last night from my backyard, and an astro light pollution filter was used.
Next will be to try something a bit longer perhaps. The R180/3.4 is a stunner evidently.
Gary