Does brand matter in Filters?

[sulaco]

Hi folks,

I'm just about to buy an IR blocking filter for webcam photography but when it comes to the IR cut filters does brand really matter?.

Baader do one for about £37 and then you can pick much cheaper version for £14 from Morgans, are IR cut filters quite generic and are you just paying for brand and the clever milling on the lens frame or is there a real difference in coatings?.

Thanks

[cs1cjc]

Different brands have different curves, as can be seen here:

Astronomical filter curves

You do know what you are getting from Baader...

[Bizibilder]

Thanks for those curves - very useful.

[Peter Drew]

The optical quality (flatness) is also important, should be good on the more expensive items.

[Rossco72]

Perhaps for webcaming it's not so important, but when you have a larger more sensative ccd, the optical flatness and the consistency of the coatings are important as is parfocal performance with other filters if using a wheel etc.

Baader are a good brand and you wouldn't go wrong with them...

Cheers