I have e a DVX100b...been using it for about 5 years now...never any problems...fantastic cam.. Within the last two weeks I ran into a odd "color shift" in the greens- where they are taking on a "brownish yellow cast"...with some magenta in there. I don't have a problem typically with apertures over 5.6 for example with any combination of ND's...either in cam or external. The problem occurs when I have a .6 and a .3 ND in the matte box and start to open up from say 4.8 to OPEN...which are stops I use for certain rack focus moves. I've included a side by side low rez image shows image with and without problem...and was taken with sun behind me about 4:00. Any help, comments, advice would be much appreciated...I'm shooting production right now, and would like to figure this out asap.
Color shift problem with use ND's and wider apertures
- Thread starter brandtb
- Start date
SO white balance isnt in the mix of this at all insofar theyre all using the same WB?
campgardner
Member
Have you tested the 0.3 ND for color shift? Tried it on another camera? Just to be sure.
Looks like IR contamination. Depending on the strength of the particular camera's on-sensor IR filter, an additional IR or "hot mirror" filter is needed when using ND above .9-1.5 or you will get magenta hues in the shadows/blacks. This is standard practice with all digital cinema cameras.
How far apart in time were the shots? Daylight changes constantly; a constant white balance may produce differences like this. Then, of course, a manual white balance will give you a totally different result?