IR can and will damage eyes. The problem is that since it is invisible and your eyes can't detect it, there is no blink response under bright light and further as there is no or not much visible light, the iris opens completely letting more of the IR enter the eye.
Please do not use the viewfinder with IR filter on.
But .... the IR filter isn't the full range of IR, only near IR (reflective) and not far IR (heat emission) .... not sure if that has any effect on the damage caused to my eyes, but I assure you that at around 15-stops, the IR filter is nearly impossible to look through unless one chimps through the IR filter held up close to your eye towards a sunny scene. Through the viewfinder - forget it, so it's barely for about 1-2 seconds (he says, hoping his eyes aren't irreparably damaged
OK. Remote test done. I can see very easily the dot cast by the remote when button clicked to send the IR signals. So what could be the cause for the dark leaves compared to the brighter sky? Filter is letting in some visible light too? But that is not the case with the Opteka that Ayaz has since Vikram has tested that one. So some work needed to get to the cause.
OK - so all that test did was tell you that your camera sensor is sensitive to IR and so it's not the sensor that's blocking IR. It says nothing about the actual filter (my comment earlier was on the internal cut-off filter and not the screw on). As you can see the dot quite clearly, your sensor is fairly sensitive to IR (my D80 showed a dull spot, my D700 shows a bright spot).
Camera - check
Filter - No check in LW case, but check in Theqca's case.
Subject - the leaves need to be lighter green and not dark green (those Ashoka trees in the foreground in LW's shot are usually good options when sunlight falls on them. Peepul, Mango are a no, no - always comes out black). Bamboo is always fantastic.
Settings - that's the next check.
a) shoot at f/8 with your WB set to 2500k - about 30 secs in bright sunlight (the time will differ based on camera)
b) shoot at f/8 with WB custom set against sunlit green grass - again 30 secs
post pics here please
Not sure which RAW processing software you're using ... but check that it's not showing an 'auto' something preview. Or even better, shoot RAW + Jpeg for now.
PS: G2 was getting white leaves btw, he was facing other issues
@LW - Hey...maybe its the lens? have u tried different lenses? maybe some of them are more suitable to IR than others....could be some coating on the glass thats responsible for messing things a bit? i just got my 28mm 2.8 serviced - will try some pics with that and check...
Lenses cause hot spots not blockages - so an unsuitable lens will show a central brightness (usually goes away if you start opening up the lens to about f/5.6)