Archived posting to the Leica Users Group, 2016/07/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Beautiful result, whatever the methodology! Cheers Jayanand On Tue, Jul 12, 2016 at 11:21 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 >