Blackmagic Forum

Sorry if this has already been addressed, but I sifted through the search and couldn't find exactly what I'm trying to figure out.

I'm trying to get some NDs for the pocket camera. I decided to go with regular NDs and not variable. I found some really nicely priced tiffens on Ebay up until 1.2, then they start to get pricey.

So my question, if I plan on shooting around f4 or f5.6 will ND 1.2 be enough when shooting in daylight?

Also, I'm under the assumption that after .9 I need an IR cut filter. Will this do the trick? http://www.ebay.com/itm/220939814135?ss ... 1423.l2649

p.s. The reason why I'm not going with a variable ND is that it sounds like you get better image performance out of regular NDs. Is this true?

Thanks for any help!!

robert.roth008 wrote:Sorry if this has already been addressed, but I sifted through the search and couldn't find exactly what I'm trying to figure out.

I'm trying to get some NDs for the pocket camera. I decided to go with regular NDs and not variable. I found some really nicely priced tiffens on Ebay up until 1.2, then they start to get pricey.

So my question, if I plan on shooting around f4 or f5.6 will ND 1.2 be enough when shooting in daylight?

Also, I'm under the assumption that after .9 I need an IR cut filter. Will this do the trick? http://www.ebay.com/itm/220939814135?ss ... 1423.l2649

p.s. The reason why I'm not going with a variable ND is that it sounds like you get better image performance out of regular NDs. Is this true?

Thanks for any help!!

I believe Tiffen recommends you use their IRND filters now. If you have not bought any, it might be worth getting the filters that appear to work very well on the BMCC sensor (should perform the same on the BMPCC).

A bright day and you may be fine at f/5.6, as you may also consider using a smaller shutter angle like 90 degrees if you are shooting in too much light. In very bright situations you may need to go to f/8 if you lens can handle that without diffraction becoming a problem.

Rick Lang
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