Filters vs Lightroom?

[Sideburns]

If you're going to buy filters, stick with Circular Polarizer (best on lenses that don't rotate the filter threads when focusing), Neutral Density Filters (for reasons stated above), and I guess IR filters (I've never used one so I really couldn't tell you). Everything else could be done in PS. If you're doing any off camera lighting (strobes, studio lights, etc) the filters for that are worth it, even color filters, called gels, because you are then modifying the light...which is a pain in the arse to do in PS.

The only reason to gel lights is if they are two colours and you want them one colour so you can whitebalance correctly...or because you want different lights different colours (blue, red, green)...

Otherwise, everything can be changed in photoshop. If all the lights are the same colour, you just change your white balance in camera or after, and bingo. NO gels.