Filters for the Bigma
Posted 13/02/2008 - 14:41
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Not a lot of use for Clarky's Bigma but I bought this for those seascape situations:
Had the camera first of course, its not much use on its own!
Had the camera first of course, its not much use on its own!
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
Posted 13/02/2008 - 14:46
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Quote:
Coulds it be an old wives tale or just a rumour put out by the filter manufacturers : :
I've seen it leave permanent marks on lenses more expensive than anything Pentax makes. However I dont know if it had any discernible effect on optical quality in general use. Second hand value would be seriously affected though.MX veteran wrote:
I would use a UV on any lens if I was near salt water 'cos salt has a nasty habit of attacking lots of things and the coating could certainly be at risk. On such a nice lens as that why risk it. On such a long focal length it is very unlikely to affect picture quality. I personally don't think it affects any focal length with the exception of ultra wide angle lenses, the only lens I don't use a filter on is my Sigma 10-20mm. Coatings on car windscreens have been damaged by salt spray if left, leaving strange splodges visible in certain light angles.
I have heard about salt water and what it can do to lens coatings but i have never seen it or met anyone it has happened too I would use a UV on any lens if I was near salt water 'cos salt has a nasty habit of attacking lots of things and the coating could certainly be at risk. On such a nice lens as that why risk it. On such a long focal length it is very unlikely to affect picture quality. I personally don't think it affects any focal length with the exception of ultra wide angle lenses, the only lens I don't use a filter on is my Sigma 10-20mm. Coatings on car windscreens have been damaged by salt spray if left, leaving strange splodges visible in certain light angles.
Coulds it be an old wives tale or just a rumour put out by the filter manufacturers : :
I suspect you would have to sort of carefully wash the salt spray off; if it dried then you could abrade the coatings at least.
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
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