Quote:
Originally Posted by Spanrz
So the Hitachi cam just got upped to being 1st class "guinea pig".
|
Brett, I admire the investigative DIY streak in you
Quote:
Originally Posted by Spanrz
Steve, this camcorder had the green/glass filter (2 sections stuck together). Is this the better of the 2 types?
In your link, it's the Sanyo style.
|
It's quite thick isn't it.....When I very carefully pulled that Sanyo
apart the filter had an obvious 'dirtiness' suspended between
layers of the filter.
It's a random scattering of something and maybe it's the anti-alias
function? Dunno.
I remember from all of the filter tests, the only one that had the
best curve for letting Ha through but cutting IR off sharply above it
was the little glass rectangular one in the cheap webcam lens.
Quote:
Originally Posted by Spanrz
One thing I am debating on, is it advisable to get a filter for IR (pass through)?
Or more to the point, do I really need a filter?
As the testing last night worked better than expected, but unsure if a IR passthrough filter will make any difference?
The only other thing I do need to look at is an IR LED system for lighting.
Learning so much from IIS! 
|
Well as your OP said, you intend to use it for IR captures, you would need
an IR pass filter similar to what the Planetary guys use to get albedo
features on Mars, see Trevor Barry's threads on Mars. $$$$
The downside would be that because most vis light is then cut and
only IR is let through at a very specific bandwidth, the exposure
needed for objects might be longer. Longer exposures ...noise?
Keep dabbling!
Steve