:)) Gerard, I know about the problems with linear ones. I think that the
problems mainly relate to focusing, not to metering. I do have circular
polarizer though and have used them a lot.
> -----Original Message-----
> Miha,
>
> Did you mention the word... 'polarizer'?!?
>
> Did you use the recomended circular pol or did you go for the
> linear? The
> light sensors inside the camera can be fooled by a linear
> polarizer and the
> metering will go bananas. (actually I've used linear pol's without much
> troubles but they *CAN* be the cause of them)
>
> Also, the black-out vs light portions of the image could have caused your
> exposure problems. Does the 300 have partial metering? If it does
> it's best to
> use it and lock the reading on a color & hue that you know it's 'like' the
> famous shade of gray.
Again, I think that is _the_ only possibility. I will test again and let you
know of the results. The set up could be the problem. Let me illustrate:
Camera
Extension Tube
Lens+polarizer (CIRCULAR)
plastic subject
polarizer
light box
All those items in vertical position, as I tried to illustrate..
rgds,
ivi.
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