Sigma 105mm

[eeyore]

Originally Posted by Boddie

You dont mean the ones that take your average speed do you? All over Nottingham initially. Now everywhere. The newest ones are number plate for road fund license

No you're talking about SPECS which are normally painted bright yellow, the things i mean are painted navy blue and have a slim blue pole with two video camera type things in blue shades pointing downwards at an angle of about 45 degrees. There are tons of them on the A10 and A11 but they are springing up allover the place.

I dont think they are speed enforcers tbut I dont know what the flip they are ?

[Oy]

Originally Posted by glsammy

I know my luck Oy, and I wouldn't dare go out without the filter on! The very first outing, a stick or branch would scratch the lens, I guarantee it!!

That's why I use the lens hood

I do have skylight filters - and I use them at times when there's a risk of dust, sand or salty after etc getting at the lens.

Plus - my lenses are insured against accidental damage anyway

[glsammy]

Originally Posted by Oy

That's why I use the lens hood

I do have skylight filters - and I use them at times when there's a risk of dust, sand or salty after etc getting at the lens.

Plus - my lenses are insured against accidental damage anyway

I also use the lens hood and I'm insured..I take NO chances..

[MalcolmX]

i have not put extra filters on my lens and so far i have had no damage ,given this i know on dslrs with non digital lenses there is no loss of light with these but there may be some fringe distortion on cheap filters at wide angles . as to a uv filter on the ccd as far as i know the only filter on the ccd apart from the 3 colour filters is an anti moire filter or anti aliasing filter (sorry if spelling is incorrect) but i could be up for correction here

[RichBrew]

The UV filter debate rumbles on. Modern film is not responsive to Ultra-Violet light, and digital cameras have, as pointed out by MALCOLMX, an anti-alaising filter over the sensor array.
As I shoot mostly land and seascape I generally have a polarising filter screwed onto my lenses, but when shooting without, instead of using UV filters, I have an 81B fitted which gives a slightly warm image (colour psychology).
Any type of filter can run the risk of lens flare, particularly when shooting into the light (hood or not), with the extre air/glass surface in the equation, and there is the possibility if vignetting with ultra-wide lenses.