Polarizing Filter
Useful for cutting out polarized light - can remove reflections from glass, water etc. and increase colour saturation & contrast of a shot.
Graduated Neutral Density Filters
The main feature of this filter is it is Dark at one end and clear at the other, with either a hard transition between the two or a soft one. For landscape photography tis filter is used ,as they allow you to balance the exposure for a bright sky and a darker land. Available in different strengths and can be combined.
InfraRed Filter
This filter always block visible light from a source and it, only allowing in infrared or near infrared light. You can get filters that screw to the end of the lens, but personally i love the flexiblity that the seperate holder/square filters give you.
The polarizer, netural density and infrared filters could all together be useable as a screw in filter, but in my experience if you're using neutral density graduated filters you have to have them as seperate filters in a holder so you can adjust them seperate to the lens and so you can stack several if neede
Neutral Density Filter
A dark filter - used to extend the exposure time, useful for long exposure shots. Basically limits the light entering the lens, available in a variety of strengths..
soon we will post our comments on other equipments used in photography and various tips.
