Archived posting to the Leica Users Group, 2016/07/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]awesome! ric > On Jul 12, 2016, at 1:51 PM, Paul Roark <roark.paul at gmail.com> wrote: > > I used this converted Sony a7r with M glass at this year's Golden Trout > Workshops. My initial observations remain that it is a very interesting > alternative platform for the Leica M glass. I took up the WATE and the > Zeiss 50mm ZM. > > This is a color shot that those who were up there really seem to > appreciate: > > http://www.paulroark.com/Campfire-MilkyWay-GoldenTroutCamp.jpg > > It is two WATE 18mm frames at f/4 stitched in PS-CC on "automatic." > Between the 18mm at f/4 and the distortions of the merging, there is a > reduction of quality at the corners. However, this has to be in the > context of a 30 second exposure at 3200 iso (4 sec. for the center of the > campfire). The north star is not in this one, but would be above and to > the left. That is why there is less of an arc there. > > Paul > www.PaulRoark.com > > On Sat, Jun 11, 2016 at 3:49 PM, Paul Roark <roark.paul at gmail.com> > wrote: > >> I had the older Sony converted and have posted the first comparison shot >> on page 2 of my PDF on this project. See >> http://www.paulroark.com/BW-Info/KolariVision-Astro-BW.pdf >> >> "Tech Pan's" extended red sensitivity comes to digital, including color. >> >> The Astro filter is thinner than the OEM filter. Leica M wides work quite >> well at f/8, but still have a bit of un-sharpness wider. >> >> The WATE plus the astro filter may be quite a landscape combo. >> >> The astro cover glass is very incompatible with the Zeiss Loxia 21mm made >> for the Sony. The advantages of optics designed for the specific cover >> glass characteristics are obvious, and not much glass is, in my view, >> likely to be made any other way going forward. >> >> The thinness of the astro cover glass was a surprise. It shot down my >> hope of using the Loxia and it's very good f/2.8. However, with the WATE >> (and other Leica glass at f/8) the old Sony may be very interesting. >> >> (I'll probably post this on the Yahoo Digital B&W print forum also.) >> >> Paul >> www.PaulRoark.com >> > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information