Well, I've been working on figuring out refraction shots ever since I stumbled on one in Mount Rainier NP during a rainstorm... I thought you guys might enjoy them.
Basically, all I do is use a tripod-mounted Canon 30D w/ 100mm Macro and various amount of extension tubes... usually 32mm + 20mm stacked, I believe. Then you find a good dew or raindrop. Raindrops are bigger which means easier... but dewdrops have much better shapes/patterns.
Here are the three good ones (in my opinion) I've done so far in order from oldest to most recent...
"Raindrop Refraction", Mount Rainier National Park:
The problems with this one were a) noise - I had to shoot at ISO 800 (nearing sunset) and still had an exposure time of around 1/2 second... which is way too slow when trying to create a sharp image b) it was also raining at the time, so that just made it more of a pain.
"Refracted Sunflower", Blue Ridge Parkway:
This one is technically much better, shot at ISO 100 and better focus (I think), but its big problem is the composition sucks, to be blunt.
"Impatien Refraction":
To date, I think this is my best combination of color/composition/sharpness. These are dewdrops as well, note the much better shape than the above. The only issue here was exposure time, since I had so many tubes stacked (all three, I think) and there were two drops requiring a larger DOF, I had an exposure of something like 2.5 seconds @ f/20... which would have never worked had the drops not been very small, near the ground, and buried in other shrubs to help block the wind.
Hope you guys enjoy them, they're very fun to do but a complete pain in the ass at times.
- Scott



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