CI Photocommunity

Register a free account now!

If you are registered, you get access to the members only section, can participate in the buy & sell second hand forum and last but not least you can reserve your preferred username before someone else takes it.

ND 400 filter correction



Hi all,
I'm planning some portrait shots, strong backlit window setting, and a couple of strobes to the front. I have an ND-400 and was thinking of shooting at 1.4 or so. Checking the filter factor with two different bodies the correction is between 6 and 7 stops. The filter manufacturer claims a 9 stop correction. Should I go with the cameras meters, or with the filter guide?? Two or two and a half stops if a big jump. Thanks in advance for any recomendations.




If were you, I would not use strobes. I rather would use a slide-screen t o reflect the light from the window. It gives a fine ambiance to the pictut re. If you are not sure about the metering, it would be the best to take a couple of exposures with different settings, starting with the values of the meter, then varying up and down. You will get fine results this way.

Hans Villars, Switzerland


Great Idea!!!~!
Slide screens as large reflectors...
Fairly compact.
Hello EBAY!!!
Shouldn't need any ND..
Nothing wrong with reflectors made just for that purpose, but slide screens ought to be quite a bit lower priced.


Well-Known Member
Good suggestion Hans ! I was going to suggest exactly the same thing - you can get beautiful effects using this method . You dont even necessarily need a screen either - I also use largish sheets of polystyrene[very cheap!] and sometimes these fold up silver-foiled sun-screens used for keeping hot sun from streaming through the windscreens of cars when parked[ I have both silver and gold which is nice to reflect a little "warmth"sometimes .They also fold up very small and I generally have one in the car anyway!] . The projector screen can often be most convenient though because it generally comes with its own stand of course! Steve


Folded-up sun screen for cars is what I use. It works great indoors. But outdoors its flimsy construction occasionally makes it difficult to hold steady on windy days.