Focal length differences are the same for macro as for regular shooting: a 100mm is going to give only half the angle of view as a 50mm, but there is one thing you have to keep in mind though and that is the effective focal length DOUBLES by the time you get to 1:1 vs. infinity, so a 50mm at 1:1 gives same angle of view as a 100mm at infinity. The other thing that focal length affects is the working distance. A 100mm lens at 1:1 will give you 400mm from subject to film plane while a 50mm will only give you 200mm from subject to film plane at 1:1.
The MICRO/MACRO thing is a marketing term with no real hard fast definition. JCO -----Original Message----- From: Anders Hultman [mailto:[EMAIL PROTECTED] Sent: Monday, August 09, 2004 4:27 PM To: [EMAIL PROTECTED] 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? anders ------------------------- http://anders.hultman.nu/ med dagens bild och allt!
