EX1/EX3 IR Filter Shoot-Out
The EX1/EX3 built-in Hot Mirrors suck. Or do they? One way to find out...
By Art Adams | February 26, 2009
THIRD UP: TIFFEN
The only Tiffen filter we tried was the Tiffen Hot Mirror IR ND 1.2:
It worked perfectly. This should have been a clue, but I didn't see its relevance until I was driving away. And then I felt like an idiot.
I was so stuck on the idea that this camera's built-in Hot Mirror was poor or missing that I missed all the clues:
The Schneider Tru-Cut 680 worked fine except for vignetting.
The Schneider Tru-Cut 720 and Formatt Hot Mirrors removed some of the IR/far red contamination, but not all.
The Schneider Tru-Cut 750 did nothing.
The Tiffen Hot Mirror IR ND filters worked perfectly.
I was halfway home before it hit me: the problem wasn't that the cameras had poor built-in Hot Mirrors, and the problem probably wasn't infrared at all. I'd seen exactly the same pattern on the Sony F35. The issue on that camera hadn't been solved by a Hot Mirror at all, but by a dye filter that only blocked far red. That dye component is built into the Tiffen Hot Mirror IR ND filters, but as I hadn't tested the Tiffen IR ND filters that DON'T contain a Hot Mirror component I had no idea whether the issue was IR (solved by a Hot Mirror) or far red (solved by a simpler, and cheaper, dye filter).
Could it be that this little $10k camera had the same issue as its $250k big brother? At the next opportunity, while prepping for a spec spot, I performed a quick check with the Tiffen IR ND (non-Hot Mirror) filters. The final results are on the next page...
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freshdv - Sun, May 19 2013 - 5:24 pm
RT @jasondiamond: @OFFHOLLYWOOD yeah except that video says literally nothing except we're gonna make a cool gimball that will look great & a good price.
freshdv - Sun, May 19 2013 - 5:21 pm
RT @OFFHOLLYWOOD: Move over MOVI - here comes the DEFY 3-axis camera gimbal http://t.co/Yd4ZBUfNG4 #r3d