Quote:
Originally Posted by BillS
I'm still new to lots of this stuff.. so, please bear with this newbie..
I just purchased a Canon 50d body with a Canon 24-105mm L IS USM..
I see a lot of folks like the Canon 100mm lens for macro work. Is this lens different than the lens I have.. other than the fact that mine is a tele zoom? In other words, at the 100mm end of my lens.. how would it differ from the fixed 100mm lens for macro work?
Thanks.. I'll have a ton of questions as time goes on.
Bill
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I don't have the EF 24-105 f/4L IS USM or the 100mm macro lens, but from what I read: the 24-105mm's maximum magnification (the subject's size in relation to your frame) is 0.23x (zoomed in all the way to 105mm taken at 1.48' minimum focus distance - the closer you are on the subject the bigger it appears on your frame) while the 100mm macro lens' maximum magnification is 1x (or 1:1) taken @ 1' minimum focus distance. As you can notice, the 100mm can produce a bigger subject (in relation to your frame) compared to the 105mm.
Additional info you might be interested to know about
:
One way to increase the maximum magnification of your 24-105mm is by using a lens accessory, either an extension tube or a close-up lens. Using both of the accessories lets you focus nearer to your subject (the minimum focus distance)... An extension tube is a lens accessory you mount between the lens mount and the camera body mount. Canon makes two types of extension tube a 12mm and 25mm extension tube. Using 12mm extension tube (ET) increases the 24-105mm's maximum magnification to 0.4x to 0.6x (depends if you "zoom" your lens or not). While the 25mm ET will increase the maximum magnification to 0.61x. The other accessory you can use is the close-up lens, this accessory is fitted in front of your lens, using the lens thread. using the close-up lens will give you a maximum magnification of .11x to .34x By using ET you will lose your len's infinity focus (I don't know if it will be the same for the close up lens? other members please do advise)
Best regards.