Screw on Filters & stacking them. UV - POLARISER - ND

[Darren]

I have 3 screw in filters, Hoya HD UV, CL Polariser & variable ND filter.
Is there a particular order to which they sit on the lens?
Eg 1st screw on UV then polariser if needed or does it not matter ?
Same with variable ND filter. Leave UV on then screw on ND filter or remove UV first?

Lastly is a skylight filter similar to UV. What is the preferred filter in those two? I've seen quite a few landscape guys choosing skylight filters over UV.
Any help is appreciated.

Cheers
Darren

[John]

My preference is to use no filters but always use a lens hood. There are very few filters that are needed in digital photography, so why add more glass to a carefully computed lens?

The only exceptions may be the polariser and graduated filters, both of which have specific uses. They are not filters to leave permanently on a lens.

UV and Skylight filters (the skylight being simply a stronger effect) are often touted as protection filters, but it's debatable if they are any use for that. Apart from any optical degradation, if you break a filter then the shards are quite likely to scratch the front element of the lens. A lens hood is much better for improving contrast and also protecting against knocks.