peterski Offline Upload & Sell: Off
|
Dalantech wrote:
Two things:
First that area of a hoverfly's head is extremely reflective and it's normal to see a flash reflection there.
If you're concerned about light from the flash getting back into the camera (which would cause a loss of contrast and not necessarily a reflection problem) then set your camera to display the histogram when you view an image (all three primary colors). Make sure that the lens is to max magnification, the ISO to 100, and the shutter to the max sync speed for your flash. Set the flash/diffuser at the angle you normally use it, and go outside so you can point the camera at the sky (away from the sun) and take a photo. Now look at it on your camera's display. What you want to see is all three primary colors hugging the left hand side of the histogram and a completely black frame. If you see any of the histogram output to the right, even the slightest bit, then light from the flash is getting back into the lens....Show more →
Thanks John. I tried it a few times and all 3 colours hugged the left hand side of the black frame as you said. Looks like no flash light is entering the front of the lens. Most of the shots I've been taking have been of insects and spiders sitting on white flowers. This may reflect some of the light around. Also I've upped the flash ETTL to +1/3 for some of the darker subjects. This may over-expose the flash as well. Will keep experimenting.
cheers,
peter
|