Camera Labs

for a walk around zoom lens? If you can only have 1?

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Canon XSI, 28-135mm IS USM, 10-22MM USM
http://www.flickr.com/photos/phonzoxd/

Why would you only be able to have one?

They serve totally different purposes, so depends on what you want. As for me, I would rather have the polarizer. A lens hood's function can be replaced with other techniques, but a polarizer's effect is extremely hard (if not impossible) to mimic.

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Flickr

I agree, although in reality you can choose both, if I could only choose one it would be a polarizer. Although a hood can reduce lens flare, flare can be eliminated in post processing unlike the effects of a polarizer.

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-Evan

Gear: 7 Nikon Nikkor AI-S and AF-S lenses, SB-700 flash, Nikon D7000, Nikon FM, variety of accessories

"There are no rules for good photographs, there are only good photographs."
- Ansel Adams

lens hood 100%. CPLs can have many disadvantages for it's few uses.

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Gear: Nikon D80, 18-105mm, 35mm F/1.8, 85mm F/1.8, SB-600
Visit my work here

Well its not i can only have one, but i dont wanna buy both at the same time.

So if i wanted one first what will it be?

mainly for daytime shooting, in streets and of people.

Also since my lens the 28-135mm is notorious for creeping, wont the hood make it even worst?

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Canon XSI, 28-135mm IS USM, 10-22MM USM
http://www.flickr.com/photos/phonzoxd/

no,it wont. besides,a cheap CPL will take a lot of sharpness & 3 stops exposure,which is killer for street photography with a variable aperture lens...more than that,a CPL could affect your focus accuracy.

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Gear: Nikon D80, 18-105mm, 35mm F/1.8, 85mm F/1.8, SB-600
Visit my work here

what you mean no it wont?

if the lens is creeping, wont more weight at the end of the lens make it creep harder?

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Canon XSI, 28-135mm IS USM, 10-22MM USM
http://www.flickr.com/photos/phonzoxd/

A lens hood for that lens would weigh almost nothing. It wouldn't really be significant.

I would have one concern for the lens hood. As the lens is a somewhat wide angle zoom, the hood will be rather small and ineffective in the long end of the zoom. So the benefit from having one will be small. It does offer a little extra protection for the front of the lens. If you skip the genuine Canon hood and get a 3rd party one, it will cost a lot less.

The polariser filter isn't usually used in street type photography. More useful for landscapes or other situations where you need reflection control.

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.