Dave Leroy
08-04-2011, 05:17 PM
I recently bought a Canon 24-105mm zoom lens and decided to compare sharpness to my 100mm Canon macro. When I looked at the images on my laptop, the subject sizes were quite a bit different. The 24-105mm pictures at 105mm had smaller subject size than the 100mm macro.
So today I tried a canon 70-200 at 100, 24-105 at 100 (99 actually) and the 100mm macro. This time the 70-200 had the largest subject size and again 24-105 the smallest.
I would have thought all would be very close to same subject size and therefore same magnification. I tried checking online and got a bit lost in some of the technical details. I am wondering if there is a fairly straight forward explanation for this.
Dave
So today I tried a canon 70-200 at 100, 24-105 at 100 (99 actually) and the 100mm macro. This time the 70-200 had the largest subject size and again 24-105 the smallest.
I would have thought all would be very close to same subject size and therefore same magnification. I tried checking online and got a bit lost in some of the technical details. I am wondering if there is a fairly straight forward explanation for this.
Dave