Jeffery,
The removable square tab is so that when a polarizing filter is
mounted you can adjust it.
Lightroom 3 has some good noise reduction algorithms and Boris
mentioned liking Topaz.
Regards,  Bob S.


On Thu, Nov 4, 2010 at 11:27 AM, Jeffery Smith <[email protected]> wrote:
> I shot a few hundred frames last night at a dress rehearsal. Took a K-7 and 
> K-x with me, with a 77 1.8 lens and 50-135 2.8 lens. There were MANY people 
> on the stage so both lenses ended up being a bit too long. But both had some 
> problems with the dramatic lighting conditions. When I tried using 1600 ISO, 
> the camera tended to blow out highlights (the singers' faces). I did try a 
> few at 3200. The zoom was awkward to use under such low light, so the next 
> time I will take the three limited lenses (31/43/77) and leave the long 
> ordnance at home.  But I kept saying to myself "I wish I had the K-5 for 
> this". I could tell on my LCD that this high ISO frames were noisy. Just how 
> I can handle that in PhotoShop/Bridge will tell me whether or not I have to 
> get a K-5 before the next theater production.
>
> So, I'm keeping a close eye on these K-5 posts from early users.
>
> Jeffery
>
> By the way, why does the hood of the 35-150 zoom have a square tab that is 
> removable?
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