Red filter question with nikon F5.

Markok765 · Oct 6, 2008

I just bought a red filter for effect with B&W and for IR. My F5 has a color meter, and since everything is red, will it compensate for that? I don't want it to compensate, so should I just use centerweighed? Red darkens green/blue and lightens red in B&W neg, right?

23mjm · Oct 6, 2008

Hello according to the manual you don't need to make any adjustment. But use center weighted. You can down load the manual for Nikon--it is a long read but at times it can be a quite good one!!!!

Now my F100 needs +1EV with a Red Filter.

oldlugs · Oct 6, 2008

There seemed to be a little confusion about this same question on the Nikonians forum as well... At least, I'm also confused about this. Switching to center-weighted or spot metering shouldn't see the red, only the filter factor (loss of light) of that filter. I think the calculations of the Matrix metering may be a bit off with the red filter, but I'm not really sure.

Poohblah · Oct 6, 2008

in my experience, the matrix meters on my nikon autofocus and digital SLR's don't compensate quite enough for the red filter - the +1EV mentioned above is the compensation required with the matrix meter.

and yes, the red filter will make greens and especially blues darker. it won't lighten red because no more red light is hitting the film than without the filter, but relative to the the blues and greens, red will appear lighter on the final print.

Russ - SVP · Oct 7, 2008

The medium red (#25) is adequate for B/W IR. However, a dark red (#29) is even more effective.

Kiron Kid

Markok765 · Oct 7, 2008

I just tried metering with the filter. With my centerweighted metering on the F5, and my pentax spotmeter V, it was 2 stops.

I'll just use CW on the camera. Most of the time I will be using it with B&W, and CW is good enough for almost all lighting situations if you think and lock exposure.

pentaxuser · Oct 7, 2008

Poohblah said:
and yes, the red filter will make greens and especially blues darker. it won't lighten red because no more red light is hitting the film than without the filter, but relative to the the blues and greens, red will appear lighter on the final print.

Is this correct? I thought I had read that a red filter does actually lighten the reds as it allows red to pass in a way that a "no filter" or non red filter doesn't. In all the photography books I have seen in which the effect of filters is shown the red ball, doll, square etc looks very much lighter in colour and almost white with a dark red filter.

pentaxuser

Markok765 · Oct 7, 2008

pentaxuser said:
Is this correct? I thought I had read that a red filter does actually lighten the reds as it allows red to pass in a way that a "no filter" or non red filter doesn't. In all the photography books I have seen in which the effect of filters is shown the red ball, doll, square etc looks very much lighter in colour and almost white with a dark red filter.

pentaxuser

It just allows more red in VS other colors.

Poohblah · Oct 7, 2008

pentaxuser said:
Is this correct? I thought I had read that a red filter does actually lighten the reds as it allows red to pass in a way that a "no filter" or non red filter doesn't. In all the photography books I have seen in which the effect of filters is shown the red ball, doll, square etc looks very much lighter in colour and almost white with a dark red filter.

pentaxuser

technically, it does not lighten the reds as no more red light hits the film than without a filter - you can't increase the amount of light with a filter. however, a red filter does darken the blues and greens significantly more than the reds, causing the lightening effect when the filter factor is taken into account.

Red filter question with nikon F5.

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