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For questions pertaining to photographic filters, which are usually glass or plastic accessories that are either screwed onto the lens or otherwise added in the optical path. Use "software-filters" for effects filters applied in apps such as Instagram, Photoshop, GIMP, etc.
3
votes
Accepted
Is a fluorescent filter worth using, and how and when?
Fluorescent filters are for "converting" fluorescent light to closer to daylight (FL-D) or tungsten (FL-W). …
4
votes
What type of filters should I get for high sunny conditions?
In addition to the great suggestions by @Johan Karlsson, you may also want to look into Graduated Neutral Density(GND) filters. There's a good video description here. … As you can see from the video I linked to, GND filters are usually square or rectangular; they do not screw in like other filters. …