Archived posting to the Leica Users Group, 2015/12/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Got it. The f/4 is a bit of a show stopper for me. You will need extremely high ISO performance even fully open. My 35/f 2 doesn't really make the cut for getting the most star detail and manageable noise at 2400 ISO. And that's at the max shutter speed of 11-12sec. F/4 would have to have an ISO 2 stops higher (9600?) to have the same performance. Most who use the Nikon like 32000 for 6 sec with a 35mm. That is a limitation, IMO, of the SL and new zoom. A Sony with OEM seems to be the best tool for this app. I'm thinking very hard about this as I don't trust Sony. They will change everything at the drop of a profit... Or am I missing something? Bob Adler Robert Adler Photography www.robertadlerphotography.com > On Dec 2, 2015, at 9:06 AM, Aram Langhans <leica_r8 at hotmail.com> wrote: > > Thanks, Bob. I use the live view in Nikon now. It is a PITA. Try to > find a star, then focus with a loupe. Then if I change focal length I > have to do it all over again. > > I have no problem with hard stop infinity on the R 35-70/4. The stars are > perfectly sharp wide open. Much more so than with either of my Nikon > zooms focused as stated above. Wide open they are no match for the R > lens. And I can zoom with impunity. But I most often need something > wider than 35mm than on the longer side. > > Aram > > -----Original Message----- From: Robert Adler > Sent: Tuesday, December 01, 2015 3:55 PM > To: Leica Users Group > Subject: Re: [Leica] Leica 24-90 SL lens question > > Hi Aram, > > For astro landscape photography, you will not want to depend on the lens' > hard stop at infinity with such a terrific EVF: just use the EVF and manual > focus to make the stars sharp. > With the M's you don't have a choice but to depend on the hard stop. On > other camera's with a good EVF or LCD (use a loupe) it's best to see your > focus on the stars. > Hope this helps chip away at spending all your $ on the SL. I certainly > am considering it except that for my WA lenses don't play well with it. So > in addition to the SL I would need a 35/1,4 ASPH and a 21/1,4 ASPH. Add > that to the autofocus 24-90 and basically I am SOL! > :-) > Best, > Bob > > > >> On Tue, Dec 1, 2015 at 1:10 PM, Aram Langhans <leica_r8 at hotmail.com> >> wrote: >> >> Tina and anyone else with this new camera. I have a question. Does this >> lens have a hard stop at infinity or does it focus past infinity in manual >> mode? I am thinking of night astrophotography. My35-70/4 has a hard >> focus >> at infinity. I just turn till it stops and I am all set, no matter what >> focal length I am using. Not so on my Nikon AF lenses. Not sure it this >> is the way a lens has to be designed for AF, or if it is just cheaper to >> do >> so. >> >> Also, in manual focus, if you focus on an object at 90mm, does the focus >> change as you zoom out to 24? In other words, does the focus change as >> you >> move through the zoom range? Again, the 35-70/4 does not change focus as >> you zoom, but all my Nikon zooms do. The 16-36/4, the 24-120/4 and the >> 70-200/4. The worst offender is the 24-120. My love to hate lens. Again, >> I am thinking of astrophotography. If the 24-90 SL lens does not have a >> hard infinity, I would like to be able to focus once on a star then not >> have to refocus if you change the focal length. Hard infinity would be >> best, but this would also work after the initial focusing. >> >> I looked at the review by Dowling. I really need to stop looking. It >> really makes me want one in spite of the size. It looks like a very >> impressive camera with a great viewfinder, the thing I really dislike >> about >> the other mirrorless cameras. But I know I should not spend that much >> money, if I had it, and just enjoy what I have now for a while. >> >> Thanks. >> >> Aram >> >> Aram Langhans >> (Semi) Retired Science Teacher >> & Unemployed photographer >> >> ?The Human Genome Project has proved Darwin more right than Darwin himself >> would ever have dared dream.? James D. Watson >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > > > > -- > Bob Adler > www.robertadlerphotography.com > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information