Search results for 'uv filter' - page 263
photos through glass
Also for digital you will get better results with a Circular Pol filter rather then a Linear!
Posted by SmutjeUK on 07/01/2011 - 14:09
photos through glass
Shooting through two thick panes of non-optical grade glass is never going to be ideal.... using a pol filter would help but you'd lose stops of light. I can only suggest opening the window :lol:
Posted by Pentaxophile on 07/01/2011 - 15:18
Preventing condensation
Not yet a problem and I hope it won't become one :D. A week today start my Hurtigruten trip. My camera will be subject to extreme changes of temperature a lot - outside on the boat to inside on the boat and the same on excursions. This is a recipe for condensation. How can I prevent th...
Posted by Gwyn on 26/01/2011 - 15:26
Preventing condensation
I tend to keep a number of reusable desicant cartridges in my camera bag. Ideally the optics should be in a air tight container with the desicant. If the silica gel bags have been in the general atmosphere for some time they may have little effect (they do get saturated). Silica gel can be dried...
Posted by petrochemist on 26/01/2011 - 16:34
Preventing condensation
Just had a thought about this - shoot me down if I'm wrong please. Gwyn wondered about a filter Oh and I don't normally use a protective filter on my lenses - would one be a good idea given the maritime climate, or will cleaning the lens thoroughly suffice? wouldn't this actually give more pro...
Posted by techno-terminator on 26/01/2011 - 17:11
Preventing condensation
Just had a thought about this - shoot me down if I'm wrong please. Gwyn wondered about a filter Oh and I don't normally use a protective filter on my lenses - would one be a good idea given the maritime climate, or will cleaning the lens thoroughly suffice? wouldn't this actually give more pro...
Posted by Pentaxophile on 26/01/2011 - 17:14
Preventing condensation
Just had a thought about this - shoot me down if I'm wrong please. There won't be any condensation between the filter and lens IF YOU DON'T REMOVE THE FILTER. Actually, if you go out for very short period of time (5 min. or less), it might be a good idea. The air gap in between the lens and the ...
Posted by pentaxian450 on 26/01/2011 - 17:20
Preventing condensation
Ziplock bag added to my packing list :D: I shan't bother getting a filter, just rely on my cleaning skills. If it is blowing up a storm I doubt very much I'll be out on deck getting wet and frozen :shock: :lol:.
Posted by Gwyn on 26/01/2011 - 17:37
Preventing condensation
Just had a thought about this - shoot me down if I'm wrong please. There won't be any condensation between the filter and lens IF YOU DON'T REMOVE THE FILTER. Actually, if you go out for very short period of time (5 min. or less), it might be a good idea. The air gap in between the lens and the ...
Posted by techno-terminator on 26/01/2011 - 17:45
Neutral Density Filter Colour Cast
Went out today to try out my new ND filters on my K100d at my local weir. I was using an 8, 4 and 2 stacked, white balance set to daylight, 0.5 second exposure gave me this... Took the filters off and changed from shutter priority to Auto and got this... Put the ND filters back on a...
Posted by Alec on 30/01/2011 - 18:14
Neutral Density Filter Colour Cast
never seen an nd filter do that... what camera?
Posted by Don on 30/01/2011 - 18:24
Neutral Density Filter Colour Cast
That is dreadful, but I think we need a whole lot more information to begin to understand why. Cheap ND filters do have a colour cast and certainly on film very long exposures will cause colour shifts. So, how was it shot, in full detail?
Posted by johnriley on 30/01/2011 - 18:34
Neutral Density Filter Colour Cast
Looks like they have been taken through a R72 infra red filter. John
Posted by DOIK on 30/01/2011 - 18:38
Neutral Density Filter Colour Cast
That is dreadful, but I think we need a whole lot more information to begin to understand why. Cheap ND filters do have a colour cast and certainly on film very long exposures will cause colour shifts. So, how was it shot, in full detail? I have seen cheap polarizers do that... especially when st...
Posted by Don on 30/01/2011 - 18:47
Neutral Density Filter Colour Cast
Filters are cheap ones from ebay link Obviously the old adage of 'buy cheap buy twice' must apply to ND filters. Lens is a Carl Zeiss Jena Jenazoom super 28-70mm f/3.5-4.5. Exif data from first shot. A lot there, not sure which parts are the important ones :? Camera Pentax K100D ...
Posted by Alec on 30/01/2011 - 18:49
Neutral Density Filter Colour Cast
check you 2 stop nd to see if it is polarized.... a cheap polarizer could easily be sold as a 2x nd.... 4x possible but not likely....
Posted by Don on 30/01/2011 - 18:51
Neutral Density Filter Colour Cast
I got the same set from the same seller but never had any problems. I expect a couple of deliveries tomorrow, if they come early I go out and see if I can replicate the result. Never stuck all three together so it will be interesting, Will post the result here.
Posted by SmutjeUK on 30/01/2011 - 19:37
Neutral Density Filter Colour Cast
An ND2 or ND4 would that gave that result would be obviously coloured. High quality filters will be absolutely neutral. It isn't a good idea to stack filters; in this case you're using three - so another three layers of glass and another six refective surface before the image even gets to the front ...
Posted by gartmore on 30/01/2011 - 21:49
Neutral Density Filter Colour Cast
I have read of a lot of ND filters probably aside from the Lee or Hitech Ones having a cast but I've never seen anything like that!
Posted by chrism_scotland on 30/01/2011 - 21:57
Neutral Density Filter Colour Cast
i have cokin nd filters which if 3 are stacked it gives a magenta cast take any one away and it disappears. i bought the hi tech -just the same and their 10 stop is awful for it.
Posted by redbusa99 on 31/01/2011 - 08:30
