W R O N G ! ! the 100mm will have exact same DOF as the 50mm at the same magnification and aperture. focal length has no effect on DOF, it is determined solely by magnification and aperture. JCO
-----Original Message----- From: Herb Chong [mailto:[EMAIL PROTECTED] Sent: Monday, August 09, 2004 8:41 PM To: [EMAIL PROTECTED] Subject: Re: 50 or 100 mm the 100mm has a shallower DOF and a greater working distance for a given magnification. as for terminology, it's convention and there is no rule. i've always seen microphotography as taken with a microscope as the lens system. Herb... ----- Original Message ----- From: "Anders Hultman" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, August 09, 2004 4:26 PM Subject: 50 or 100 mm > Exciting with the new lenses. Could someone please explain what the > difference in focal length will mean for macro shots? I fully > understand what difference it makes in regular shooting conditions, > but wouldn't "life size" 1:1 magnification become 1:1 regardless? What > difference does it make then? > > And another thing about macro; when objects become larger than life > size, someone said that it is called micro rather than macro. Is that > true?
