« on: April 06, 2012, 12:51:00 PM »
Wow wasn't even aware of this risk. Well...I guess I know now where NOT to bring my camera! Learn something new every day I suppose...
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I would suggest that APS-C owners do care about the IQ of their images and sometimes the only way is through the L route
In answer to the questions on the drop shot, I used one of these - http://www.cognisys-inc.com/stopshot/stopshot.php
Basically the drop is frozen by the flash, not the camera. I set the Stopshot to drop three drops. The second drop rises up from colliding with the first drop. The third drop then collides with it as the second drop rises. The drop at the very top was unintended. You need a high speed trigger like Stopshot to do this as the collision lasts for only about 1 ms.
To obtain the colors I use one food coloring on the water in the pan and a different one on the drop. I then use a gel to get a third color for the background. Here the water was yellow and the drop was green and they kind of both morphed together. The blue in the drop is from the geled flash.
In this shot I managed the colors a bit better, but didn't know how to collide the drops at the time.
For those interested in what I plan to spend the money on instead, I am still working on a list but the following are the likely choices.
- A few more flashes so I can do some more creative things
- A Stackshot to get into image stacking
- Mitutoyo 10x and 20x objectives so I can move past the 5x magnification of my MP-E 65
- A high speed shutter to enable photographing insects in flight
Don't forget that on the 7D a f/2.8 lens has DOF f/4.5 effectively, and the 300mm f/4 becomes a 480mm with DOF f/6.4.
This is not necessarily bad, I actually love this feature on 1.6x crop bodies.
Okay, I figure I'm going to get slapped for bringing this up, but on a crop body, why aren't more people recommending the 15-85 over the 24-105?