That was my plan originally too in this thread - return the 60mm and get the 50mm and see how things go. I guess I will do that. I am sure the 503CW/P30 is a killer combo, but it will be the "shoot within 100 feet of a car" type of images rather than "hike 7 hours into wilderness" type, unless you are Bob Adler of course :-) (he called me "wimp" when I made the "..100 feet of a car" comment) On Wed, Jan 26, 2011 at 12:41 PM, Franc Flipsen <fujifan@xxxxxxxxx> wrote: > Hi James, > > I think he's talking about 4/3 sensor used by panasonic and olympus. As > for your P30 back, it has a crop factor of 1.3 so the viewing angle of a > 40mm lens is actually 52mm. Also PhaseOne does not recommend lenses wider > than 40mm (before Factoring) as they cause color fringing on the edges of > the sensor. With that in mind an SWC or a 30mm is out of the question. > 40mm(52mm) 50mm(65mm) 60mm(78mm) 80mm(104mm) 100mm(130mm) 120mm(156mm) > 150mm(195mm) 180mm(234mm). Taking the crop factor into consideration I'd > start with a 50, 80 and a 120 then add a 40 and a 180. Once you get used to > the quality of a digital back you'll never go back to 35mm gear for anything > serious. I got hooked on my old kodak back (16Mp) traded up to a P25 and > really got addicted, Now I've got a H3d39 and prefer it to my Nikon D3. > Your going to see a big difference even in an 8x10 print. > > Franc > > > -- // richard <http://www.imagecraft.com/> // icc blog: <http://imagecraft.com/blog/> // photo blog: <http://www.5pmlight.com> [ For technical support on ImageCraft products, please include all previous replies in your msgs. ]