Exposure with 3D matrix metering & polarizer filter

[RobertT]

Hi all -

I shoot film (black & white, color negative and slides) on a Nikon F100 and recently bought a Nikon C-PL2 Circular Polarizer (77 mm) for my Nikon f2.8 80 – 200 mm.

The instructions with the filter state”
“With AF camera having 3D matrix or multi-sensor metering, the correct exposure may not be obtained. In this case, use centre-weighted metering. For cameras having a TTL exposure meter, no exposure compensation is required. For other cameras, make exposure compensation by approx. 2 to 4 filter factors (+1 to +2 stops).”

These instructions seem contradictory to me. The F100 has TTL metering so I would expected I could use it with 3D matrix metering, center-weighted metering or spot meting and have the camera give the correct exposure without any manual intervention.

Is this correct?

Thanks very much to all who provide their assistance and expertise.

Robert

 

[Sirius Glass]

I have used a circular polarizer with my N-75 for four years and had no problems. The light readings have been right on regardless of which sensor location I choose. Then again, I only shoot 50 rolls of 135 a year. Many here have more experience.

Steve

 

[PhotoJim]

Occasionally if you use maximum polarization I've noticed a tendency for matrix metering to slightly underexpose the image. This is probably what they are talking about.

You may want to bracket strongly polarized shots until you get a sense of what the meter is doing and what you want.

I find that if I use moderate polarization, the matrix meter exposure seems to be just fine; it's only on maximum polarization that I tend to get underexposure - and it's slight, probably 1/3 stop.

 

[MattKing]

I'm wondering whether these instructions are just poorly worded. They may be trying to say something like:
1) if you don't have TTL metering, add 1 to 2 stops exposure to what your meter indicates; however
2) if you do have TTL metering, and a choice between matrix and centre-weighted metering, use the centre weighted metering.

Matt

 

[roteague]

No. I almost always shoot with a polarizing filter on my Nikon F5. I read the same thing, but haven't found any reason to believe it.

 

[Snapshot]

I've been shooting with a F100 with 3D-matrix metering and, to the best of my knowledge, never had an exposure problem sole due to the polarizing filter.