redfordl Loc: Carver,Ma.

One of my club members was using a lense hood over a polarizer filter on his camera?(dslr) Do you really need the lense hood in this situation(partially sunny or sunny day)? Thanks for your help!

MtnMan Loc: ID

CPs are dust magnets. I keep the hood on mine.

Longshadow Loc: Audubon, PA, United States

I would imagine sun glare would be sun glare. I don't think the polarizer would be immune.

bobmcculloch Loc: NYC, NY

Sometimes I wish I could use both, but usually I just use the hood, too important to me to use the hood, if I have time to take off the hood and mount the polarizer I will but in practice not as often as I should, now I am frequently keeping up with others who are not shooting, or at least with as much dedication as myself, Bob.

Morning Star Loc: West coast, North of the 49th N.

I can't give you a "yes" or "no" answer, and maybe the answer is "it depends".
The purpose of polarizing filter is different from the purpose of a lens hood.
But the hood will help to prevent sun flare caused by sunlight hitting your lens. I do not know if the polarizing filter will do that.
The polarizing filter will make your blues bluer, take the sparkle off water... No way the hood will do that.
I have actually used a polarizing filter and lens hood together, although most of the time I find it a nuisance as you can't comfortably reach the edge of the filter to turn it. One lens hood I have, has a little door on the side; when opened, it is easy to move the filter, and I was told it was made especially for that purpose.
In the end, it is you that will decide whether you need both together, or one, or the other.
Pick a nice day, take a bottle of water and some snacks, put your hiking shoes on, and go for a walk. Stop frequently and take a photo with only the hood, with only the filter, and with both on the lens.
Then compare the photos when you get home... Even if the experiment didn't work, you'll still have had an enjoyable walk, doing what you like best: taking photos!

Madman Loc: Gulf Coast, Florida USA

In my opinion, yes. It is likely that the hood that came with your lens will make rotating the outer element of your CPL difficult, so a folding rubber hood that screws into that outer element is recommended.

Because the CPL encorporates parallel elements, the risk of flair is increased. Just be sure that the hood that you choose is wide enough to prevent vignetting at its shortest focal length.

Longshadow Loc: Audubon, PA, United States

I found my polarizer has knurling on the edge of the ring, and I can adjust it with my fingernail with the hood on the lens. (Just gotta be careful not to stick my finger on the filter...)

imagemeister Loc: mid east Florida

If you get a pola with female threads - for most situations - .you can use a round metal hood with it - which is usually the case for me because my hoods are on in the using position 24/7 and I cap the round hood. If I were in a situation with bright angular light from the subject direction I would consider using the tulip/bayonet OEM hood. I have used CPL's without hood when the situation allows/dictates.

davidrb Loc: Half way there on the 45th Parallel

Both are needed for the same reason: controlling light entering the lens.

MtnMan Loc: ID

Sorry, I was thinking lens cap for the above.

I use the hood when I'll be in the sun with the camera. I only use the CP on lenses that have the petal type hoods so it is possible to work the CP with the hood on.

bdk Loc: Sanibel Fl.

I think it would be even more important to use the hood because of the way the Polarizing filter works you can get more flair

Leitz Loc: Solms

There is no need for a hood when you want your image ruined by stray light.

Mac Loc: Pittsburgh, Philadelphia now Hernando Co. Fl.

Yes, but CPs are hard to adjust with a lens hood on. You can buy soft rubber lens hoods that screw on to the front of the CP filter and make adjusting easy.

redfordl Loc: Carver,Ma.

And what brand rubber hoods are they and from what vendor can you purchase them?

rgrenaderphoto Loc: Hollywood, CA

If you use a after market lens hood, you run the risk, when the camera is in vertical mode, of getting a shadow in one of the upper corners. I've started rotating my petal style hoods 90 deg to prevent this. This is really an issue with wide angle lenses.

A good polarizer filter, on a bright sunny day is a vital tool. And it really isn't that hard to reach into the lens hood and rotate. See that attached image, I had hiked to a stream in the Sierra Nevadas to view migrating Salmon, and realized I did not have my CPL. This was the result.

(Download)