CanopicJar wrote in post #17770853
Can you post some links to your diffusion materials?
I mentioned this in the video, but forgot about it when you asked me for the materials list -doh (I'm 50, so I have an excuse ). [IMAGE'S LINK: https://flic.kr/p/yuxesz]Scarlet Lilly Beetle Series 1-1
Hot glued directly to the MT-24EX flash heads is a wide angle diffuser. The problem with diffusing any flash in a short distance is getting the light to spread out as rapidly as possible. Think of the light leaving the flash like water from a fire hose -given enough distance it will spread out, but right up against the nozzle it's pretty much coming straight out. I've tried a lot of different materials for that first stage, from yogurt bottle plastic to a piece of heavy diffusion that Nikon makes. But all of them either added an odd color cast to the light, or made the light too warm. I like warm light, like it better than pushing the saturation in post, but most digital sensors are very sensitive to red light, and if the light is too warm it's easy to blow out the red channel.
While trying to figure out how to diffuse a standard flash in a small distance I realized that the easiest way to get the light to spread out was to simply use the wide angle diffusion panel built into most flashes. It's designed to force the light to spread out while being directly against the flash heads, and it won't add an odd color cast or make the light too warm. So I ordered a replacement wide angle diffuser for one of the Canon flashes (I think it was the 530EX -don't remember, see the part about me being old ), cut it in half, and hot glued it directly to the flash heads and it worked. Here's a shot of a Lilly Beetle, a critter that I had almost given up on shooting because they are so reflective, taken with the beta diffuser that I was using at the time. Tech Specs: Canon 70D (F16, 1/250, ISO 100) + a Canon MP-E 65mm macro lens (2x) + a diffused MT-24EX (flash head "A" set as the key and "B" as the fill). This is a single, uncropped, frame taken hand held.
by John Kimbler
, on Flickr
For my current diffusion I'm using a wide angle diffuser replacement part for a Canon 600 RT. Although I'm still experimenting with the materials between the Sto-Fens and the Puffer Plus diffusers I like the light I'm currently getting. With insects like this bumblebee it's easy to lose the compound eyes in the strongest part of the specular area, and it's easy to blow out so much detail that the overall shape of the eye looks flat. Tech Specs: Canon 70D (F11, 1/125, ISO 200) + a Canon EF-S 60mm macro lens with 25mm of extension (1.7x) + a diffused MT-24EX (flash head "A" set as the key and "B" as the fill, both on the Canon flash mount). This is a single, uncropped, frame taken hand held. [IMAGE'S LINK: https://flic.kr/p/AWHk9q]Finger Fed Bumblebee II
by John Kimbler
, on Flickr