Polarising filter

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ash39

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Hi,

looking at adding one of these to my kit. Somewhat fortuitously, my three best lenses all have 77mm filter sizes so I only need to buy one.

My question is, my Sigma 10-20 is bit different from the others, in that the front element protrudes from the glass as it's curved. Do I need an adaptor or holder to fit a filter to this lens? I'm sure I've read about it before but can't remember where.

Also is there a danger of including the otter ring of the filter when using it at 10mm ??

Cheers
Ash
 
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Just had a look at it and yes, hadn't realised that the outer ring sticks out as well. Feel stupid now, how else would the lens cap go on? :lol:

Next question then, are there any brands that are recommended or is every one pretty much the same?
 
Id stick to the brands. Depends how much money you have to spend on one.
Don't go for a cheap ebay jobbie, you do get what you pay for. No point in having a £300 lens with a £5 filter on the front.
Im sure others will know more than i do but Hoya pro always seem to be up there with the best filters.
 
You are likely to get vignetting across most of the range of the 10-20 unless you get a slimline version, more expensive but worth it.
 
Prepared to pay what it takes to get a decent one, like you say no point going cheap for a poor one. I've got a Hoya filter on my 28mm for protection and had no problems with it so might stick with them.

I notice they don't state slimline in any of the model names, by slimline do you just mean thin in appearance?
 
ash39 said:
I notice they don't state slimline in any of the model names, by slimline do you just mean thin in appearance?
Click to expand...

The Hoya Pro-1 D filers (as an example) are specified as 'slimline' to indicate the rims are thinner (3mm rather than 5mm, I think) to reduce problems of vignetting.

You need to check the details on the specific range you are buying.
 
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