This shot with a stack of 3 XIT autofocus tubes (13mm, 21mm, 31mm, respectively) attached to my 100 mm 2.8 macro USM. I think they were around 50 bucks for the set on amazon. Without a heavy crop you can't get near this close to a snowflake with just a 1:1 macro lens. You need a little help! My camera won't allow for much upscaling without adding a ton of noise. IMAGE LINK: https://flic.kr/p/D4rTTM snowflake
I don't have any images shot with them attached to a normal lens. But they do make a difference. I've seen people who have shot that way. Very good results. They are an inexpensive way to get into macro photography. There is no glass in them, so no optics to affect image quality. They only serve to move the lens further away from the sensor. Which somehow allows you to focus closer to an object. I don't know the science behind it, but I do know they work. One thing I'd recommend is get an autofocus set. This way your camera and lens can still communicate. Otherwise you'll be stuck wide open. I use manual focus anyway for macro, but to have the option for auto focus is nice. And being able to change the aperture too.
by Matt Johnson
, on Flickr
I want to die peacefully, in my sleep, like my grandfather.
Not screaming, terrified, like his passengers.