Went out with the Sigma 300/4.0 APO macro + Canon 500D combo this evening to look for mushrooms
. What I want to show you here are some practical examples of what magnifications of 1:3 or 1:1.3 mean.
The first one was captured with the close-up filter and a magnification of around 1:1.3
The next photo is a capture of same mushroom
without close-up filter. The lens alone goes down to 1:3
Following is a 100% crop
of a photo similar to the last taken also at 1:3
. It gives you a good feeling what 1:3 magnification means:
Shot at f/8.0, 1/250 sec, ISO 720 with the aid of a monopod
Now for my kind of macro-photography 1:1 or even 1:1.5 is seldom necessary. I'm pretty happy with what I can get at 1:3. And I think, when you look at the 100% crop with the grains of sand you would not have bet that this is "only" 1:3, right?
What I find most annoying is the limited variance in magnification when you put the close-up filter to a fixed focal lens. This gets much
better, when you put it in front of a zoom. So I'm really looking forward to using the Canon 500D close-up filter on a 70-200mm/2.8 zoom giving me a calculated range of 1:7 - 1:2.3 which fits neatly to the range the lens can do all by itself.
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews
, My Pictures
, My Photography Blog