I was shopping for a decent polarizing filter for my camera, but I got confused by all the acronyms and the variance in prices. For example in B&H stores, you can filter by Polarizer Combination:
Also for each brands, they use acronyms for example:
13 + Super 1 (Multi-Coated) is what you should be looking for, maybe add a 3 (Slim) in case you plan on using it with moderately wide lenses.
Multi-Coated are layers of chemicals that reduce flare and unwanted reflections. Slim filters are simply slimmer and reduce the change of vignetting.
The others are combined with other effects which you cannot remove after. If you KNOW you always use some fixed combination then I suppose you can some by buying combined filters but it is generally better to buy a filter than does ONE thing well.
The numbered ones, plus warming and skylight all add a different tint to your photos by filtering out some light, so you can easily do the same in most image manipulation software. Also if you use Automatic WB, there is a good chance you camera will simply cancel the effect out.
Soft FX basically blurs your image which you can also emulate by software but is irreversible.
