petdarrow wrote:@soohyun, Thanks for your reply. If I need to replace the IR-cut, would you say that both, the non-coated and coated give a slight blue color shift or just the coated one?
I have only the coated one installed, but I would assume the color shift would appear on both. It's that the eBay replacement glasses have a very slightly stronger IR filtration compared to the original, which results in some reds being filtered, hence the blue-green shift. Irony is that the IR cut is still insufficient; a separate IR Cut filter will be needed for say, shooting in sunlight with NDs.
The RAWLITE has IR cut as well, and is stronger, removing the need for a separate filter, but still introduces the color shift; that is inherently optics, nothing to be done about that. In fact, RAWLITE markets that as a boost to dynamic range, as the reds typically clip first out of any color on the BMPCC, and the reds are attenuated.
Brad Hurley wrote:petdarrow wrote:@soohyun,Also, I've been thinking about the RAWLITE, however, I've heard that sharpness is reduced, have you noticed this too? and do you see some sharpness being reduced on the ebay ones?
My understanding from a post by Dmitry Shijan last year is that Hans redesigned the OG BMPCC Rawlite filter last year (or maybe it was the year before) to reduce its impact on sharpness.
This is very true. Dunno if Dmitry is still around, but there have been several revisions to the RAWLITE for its filtration strength. The latest, I believe, is the strongest one, but that should be confirmed with Hans.
Personally, I don't use the RAWLITE much; I have the latest (I think) and the strongest one, but I found the loss in sharpness a bit too great for my tastes. It's a 1080p camera; it needs all the sharpness it can get. That said, the moire is quite severe on this camera, and the RAWLITE is very effective at removing it, but I use the camera mostly for close-ups anyway, which are usually less prone to moire.