On 11/4/04 8:14 [EMAIL PROTECTED] wrote: > Also keep in mind that the EOS body will accept the full line of EF-series > lenses with a lens factor of 1.6 - e.g. if you have an existing 300mm it now > looks like a 480mm. Makes it handy for switching back and forth between film > and digital bodies.
Sort of. This is a common misunderstanding of the crop factor of many digitals SLRs with less than full frame sensors. The crop factor does NOT turn a 300 mm lens into a 480 mm lens. What it does do is give you the 480mm field of view when you have the 300 mm lens on. This is less of a big deal at the telephoto end of things. It is a very big deal for folks (like me) that like to do wide angle stuff. My Canon 10D (1.6 crop) gives me the field of view of a 25 mm lens when I have my 16mm lens attached. It is not magnifying the image, it is cropping it to the equivalent of the longer lens field of view. > Either way, a 300mm zoom is a reasonable minimum for good field shots. We've > used both an image stabilized and non-stabilized 300mm and I'm not sure image > stabilization is all that handy for most of our launching, landing or field > shots. It will slow down the shutter response time. A tripod or monopod may be > more useful. Multi-frame is a must - 2.5/s is OK, 4/s would be nicer. 6MB > format is really handy. I like the IS on my 100-400L lens. I do sometimes use a monopod for fast shots. Most of my glider shots are done with the 100-400 freehand with IS on. Take a look at this site: http://www.flyingcirkus.com/default.asp?content=home Another shot http://www.rcuniverse.com/forum/upfiles/98986/Pn36591.jpg The third image down on the main page is a web version of an image I captured at the Tucson Shootout recently. The plane is a 38% Extra (123 inch span) in high speed knife edge flight. Taken freehand with the 100-400, shutter priority mode with a shutter speed of 1/640. I was panning to follow the plane. IS was definitely ON!! ~~~~~~~~~~~~~~~ Bill Malvey RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
