•Protect your cameras! Yeah, now that might seem obvious but at times enthusiasm gets the best of you. Not all cameras are weather sealed, I suggest using a zip lock bag to protect your cameras. And if you're creative enough, you can actually shoot with the zip lock bags on the camera!
•Use a dark colored umbrella. If you are using an umbrella while shooting (even though I personally find it cumbersome), use a dark one so that stray light doesn't spoil your shot.
•On the other hand... If you own a light colored umbrella, you could use that to your advantage by trying to light up the rain drops and come home with some truly amazing shots.
•Get creative with color. If you've observed carefully, you'll see that colors pop out during rain, so use them to your advantage! Also keep in mind that black & white photos can look fabulous under these conditions.
•Pay attention to different surfaces. Surfaces like glass, plastic, wood and oil behave very differently to light under rain. Watch out for them, you could have some nice abstract shots.
Most of all i am interested how to keep GH2 warm in very cold situation. Last winter i shoot with 7D in -25C and it work perfectly. But now i own GH2 and its body is quite plastic so i am sceptic about how it will work in cold.
Keep Camera Warm in Cold Weather Years ago I wanted to take pictures on a ski slope, but not be stuck with a camera all day long. Not wanting to just take the camera back to the very cold car and just let it freeze, I came up with this idea. I had a small Coleman six-pack cooler. I took a very large athletic sock, filled it with dry rice and sewed it shut. Just before walking out, I microwaved the sock filled with rice for about two minutes, laid it in the cooler, and placed the camera on top and closed the lid. The really neat thing is, several hours later when I went to the car to get my camera it was still wonderfully warm to the touch. The added benefit is, after shooting, when I brought the camera back to the car and placed it back in the cooler, the dry rice had the added benefit of drawing any moisture off and out of the camera. This method has worked wonderfully well for me for MANY years.
I just shot with two GH2 bodies for about 30mins in 86mph winds & rain - mostly light spray only but accelerated by the heavy winds. The bodies got pretty damp, I did occasionally wipe them down, but not a single glitch. Amazing considering how cheap they feel.
Yes the rice works very well, i use the same sock of rice to draw moisture out of the air inside in a sealed box that contains my GoPro cameras and housings. They are assembled thru two rubber gloves glued other side of the box. By trapping the dry air inside the camera housing when assembling, cameras run fog free for the life of the battery 2:30hrs even in very humid and wet conditions.