Archived posting to the Leica Users Group, 2012/09/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thanks for the detailed reply Marty. I was looking for a really good 'normal' lens for my D800E, and was wondering how well the Costal Optics would do in that application. It's between the 50/1.4 Nikkor G and the 50/2.0 CZ now. Regards, Akhil ----- Original Message ----- From: "Marty Deveney" <benedenia at gmail.com> To: "Leica Users Group" <lug at leica-users.org> Sent: Saturday, September 01, 2012 8:06 AM Subject: Re: [Leica] Costal Optics 60/4.0 Apo Macro > I've got one. It is truly apochromatic - it focuses UV, visible and > IR light without focus shift. At magnifications greater than 1:4 it > displays a strong hotspot rather than even illumination, which you can > mitigate by using extension tubes instead of focusing very close. > > To photograph UV or IR you need appropriate cut filters, and a dSLR > with the filtration removed from over the sensor. Without > modifications, most current digital cameras are only poorly sensitive > to non-visible wavelengths. A few B&W IR sensitive films are still > made. Old stocks of Kodak HIE are rapidly losing their IR > sensitivity, irrespective of storage; the sensitising dyes store > poorly. There are no strongly UV sensitive colour films made any > more. Some B&W films are reasonably UV sensitive, but again the best > ones are gone. > > The Coastal Optics lens is great for UV/IR work, but for visible light > macro work I'd get a good macro by the manufacturer of your dSLR. A > Leica 50/1.4 ASPH is a much better normal lens for visible light work > at normal distances. But for non-visible wavelengths, unless you can > find a UV-Nikkor, the Coastal Optics lens is pretty much your best > bet. > > Marty > > > > On Sat, Sep 1, 2012 at 9:11 PM, A. Lal <alal at poly.edu> wrote: >> Has anyone on this list used the Costal Optics Apo Macro lens? >> >> http://www.jenoptik-inc.com/coastalopt-standard-lenses/uv-vis-nir-60mm-slr-lens-mainmenu-155.html >> >> If so user impressions would be appreciated. >> >> Regards, >> Akhil