Well, some modern lenses do rotate the front element and ring, others  
don't, same for old lenses adapted to the 4/3 System mount. All the  
ones I'm using don't, thankfully.

Ann, there's too much madness going on here right now, I am not going  
to get to Manhattan at all this trip. I could write a book about just  
this visit... and just might.

Sorry to miss you and Amita, but there will be other times.

Godfrey


On Jun 24, 2007, at 7:32 AM, ann sanfedele wrote:

> Yeah  - remember the lens doesn't rotate - so you don't have to adjust
> the polarizer every time you re focus
> as long as your point of view is the same and the light doesn't  
> change.
>  I'm embarrassed to tell you how long
> it took me to figure that one out :)
>
> Hmmm I guess that wouldn't be true if you are using an old manual lens
> on the DSLR though.
>
> ann
>
> Bob W wrote:
>
>> I'm off to West Dorset tomorrow for another few days of pootling  
>> about
>> on my bike, doing day rides from a fixed point this time, and
>> returning on Friday.
>>
>> I'm going to take a polariser, probably. I haven't used a  
>> polariser in
>> digital photography before. Is there anything I particularly need to
>> look out for, or be aware of? I use B+W and Contax circular
>> polarisers, which are neutral in colour and good quality, but if
>> there's anything intrinsically different about using them with  
>> digital
>> compared to film, please let me know.


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