Paul, Have you tried using your 50 or 85 on the Rebel XT to shoot a matrix of overlapping shots for stitching? You can get quite a gain in effective resolution for making large prints. Carl On Apr 27, 2005, at 8:30 PM, Paul Roark wrote: > > > Clayton, > > >> ... my question to Paul was not >> theoretical. I'm asking him what has been his practical experience so >> far. > > > I did some shooting with the Rebel XT, comparing the 18 - 55mm zoom > that > comes with it to my old 50mm f1.8 standard Canon EF (cheap but very > good) > lens. In the lab, the resolution tests made it appear the zoom was > about as > good as the 50mm. In actual photos today, the 50mm looked > significantly > better. The 50mm was very good at f4 and excellent from f5.6 on. The > zoom > could only match the 50mm at the center at f11. > > The real problem with the zoom was at the edges, especially in the dark > greenery. The best the zoom could do at the edges was not as good as > the > 50mm at f2.8. I'm not sure why it looked so much worse in the field > than > lab. I suspect higher flare contributed to wiped out the shadow > details. > > So, I've made a full circle on the lenses. I'm back to wishing my 24mm > Sigma worked. I may buy a 24 Canon, and use it and my 50mm. It > doesn't > look like using the cheap zoom is going to be a fair test of what an 8 > mp > camera can do. I would not consider a cheap zoom for my film use, so > why > should digital be any different? (I'm not totally anti zoom. My 50 - > 200 L > and Fuji Zi zooms are outstanding. I'm not, however, ready to drop > $800 for > the 10 - 22 until I'm more convinced this digital approach is going to > satisfy me.) > > Paul > www.PaulRoark.com >
Message
Re: [Digital BW] Re: Sigma lenses & Canon Digital cameras
2005-04-28 by Carl Schofield
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