Andrew,
That is wonderful! Beautiful flat frame all the way across.
I'm glad to see there's no dust bunnies on the 70-200.
Regards,
Humayun
Quote:
Originally Posted by RB
Ok, here's some pics of the lightbox I made using the A3 EL Panel mounted in a box made with balsa wood and foam-core.
LOL a bit crude but works brilliantly (pardon the pun).
I simply used hot glue and pins to assemble the box.
Also, I inserted 6 'diffuser screens' made from Drafting Film and A3 translucent cover binders.
These help diffuse the light and give an even glow right to the edge.
I then attached a tripod adapter to the box so I can mount the lightbox on a tripod and swing the scope into the box to take my flats.
The only thing left to do now is to attach a white shroud on the end of the box to enable any of my scopes and lenses to be put in place to take the flats.
I think this is an easier/simpler way than having individual diameter foam cutouts for each one.
I've also attached a master flat of 7 raw flats, taken with the 5D and the 24-70mm at 70mm f/2.8, ISO 100.
As I said, it's crude in it's construction, I didn't spend much time designing it so it's not exactly symmetrical, but it works perfectly.
1. On the tripod.
2. How it looks when lit (I used a custom White Balance).
3. Tripod adaptor under the box.
4. Master Flat (7 raw frames)
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