Search results for 'uv filter' - page 178
K100D info please...
Welcome Rae, If you want a protective filter, it's best to use a UV filter not a skylight, since UV's are transparent while Skylights have a slight colour cast. my feeling on UV filters is this they have no impact on resolution that I have ever been able to detect, for this reason most of...
Posted by Mongoose on 19/06/2007 - 16:16
K100D info please...
Hi. Welcome to the best forum you'll find anywhere. Everybody else here is crazy, and I am not. (I may have that backwards...who knows..). A uv filter would be very usefull, and some people (not I) like to keep them on for protection of the lens...(good idea for many snapshooters, but alot of p...
Posted by Don on 19/06/2007 - 16:23
K100D info please...
I have both. (stack them if you need a variable nd filter..mentioned in other threads if you want to do a search). no probs on my ds2. although, I mostly use the camera in manual.
Posted by Don on 21/06/2007 - 14:11
K100D info please...
I have both. (stack them if you need a variable nd filter..mentioned in other threads if you want to do a search). no probs on my ds2. although, I mostly use the camera in manual. surely they'd both need to be linear for that to work? I thought the whole thing about using circ polarisers on AF cam...
Posted by Mongoose on 21/06/2007 - 16:39
Help please choosing Image for grading
I like the last blue dolphin the most, but the loss of detail is disappointing. You say you are lighting from below, but can you try to get more even coverage? An interesting trick if you have a LINEAR polarizer and an LCD monitor is to tip the monitor on its back and use as a light table. ...
Posted by petekd on 24/06/2007 - 08:27
Tips for Infrared?
Hi Jealousy, Nice picture - I like the contrast between the 'heavy' tractor and the 'light' landscape. I'd crop a little off the bottom myself, but there you go... :) I don't think a tripod and a lower ISO are 'a must', but the tripod might help with composition (you can compose the shot wit...
Posted by Daniel Bridge on 25/06/2007 - 14:38
Tips for Infrared?
does the TTL metering still work or do you have to set the exposure without the filter and then put the filter on it? message to self: try to resist buying an IR filter immediatly...
Posted by golfdiesel on 25/06/2007 - 15:59
Tips for Infrared?
With an R72 filter there will only be information in the red channel. The green and blue channels will be black.
Posted by johnriley on 25/06/2007 - 16:54
Tips for Infrared?
My experiments with the Cokin P.007 89B filter (just did a few quick ones) found that although the green and blue channels are practically black, they do influence the RGB Histogram, which as far as I can tell is an average of all three channels. If you get the histogram looking okay for RGB, the...
Posted by Daniel Bridge on 25/06/2007 - 17:56
Tips for Infrared?
Yes, the R72 only lets IR light through, as that is beyond red in the spectrum there's no transmission at all of blue and green light. Logically we would then assume that the meter would read only IR light, but it's not designed for that and there may well be filters in place over the sensor. there'...
Posted by johnriley on 25/06/2007 - 18:17
Tips for Infrared?
Real IR enthusiasts will have the IR blocking filter in the camera removed and replaced with clear glass. Then you have a dedicated IR camera. In the USA I notice that there is an IR version of the Fuji S5 pro marketed. Also removed for CSI style forensics ;) Matt
Posted by MattMatic on 25/06/2007 - 18:38
smc FA 50mm f/1.4
smc FA 50mm f/1.4 :D At last, my birthday pressie I am about to order :D When I order the above should I purchase a digital protector filter or just a skylight filter, probably a daft :?: but as it is not a digital lens as such I presume it would be OK for just a skylight but there again ? ...
Posted by Lilly on 02/07/2007 - 22:41
smc FA 50mm f/1.4
Oh, Matt that kinda freeks me out, always paranoid about a filter, so you say SMC is tough, what about rain on surface of lens, would you be perfectly happy just to wipe it dry with cloth?
Posted by Lilly on 02/07/2007 - 22:50
smc FA 50mm f/1.4
smc FA 50mm f/1.4 :D At last, my birthday pressie I am about to order :D When I order the above should I purchase a digital protector filter or just a skylight filter, probably a daft :?: but as it is not a digital lens as such I presume it would be OK for just a skylight but there again ? ...
Posted by iceblinker on 03/07/2007 - 02:34
smc FA 50mm f/1.4
Oh, Matt that kinda freeks me out, always paranoid about a filter, so you say SMC is tough, what about rain on surface of lens, would you be perfectly happy just to wipe it dry with cloth? If you're paranoid then get a filter ;) I have no problem with the front element and rain, or dust, or finge...
Posted by MattMatic on 03/07/2007 - 09:59
smc FA 50mm f/1.4
I'm another who doesn't used protection filters, not even with my most expensive lenses. I've never seen the point in buying an expensive lens then compromising the lens designers art by sticking another bit of glass in front. In my personal experience, and also based on first-hand accounts I have r...
Posted by George Lazarette on 03/07/2007 - 10:15
smc FA 50mm f/1.4
Maybe scratches are a long way down on the list of problems with second-hand lenses because filters for protection are very often used? I don't think ALL my money on an expensive lens is being wasted by fitting a good quality UV filter. If a lens already has thirteen bits of glass, for example, ...
Posted by iceblinker on 03/07/2007 - 10:57
smc FA 50mm f/1.4
I'm mostly concerned about minor knocks and scrapes that would not be bad enough to smash the filter but would be bad enough to scratch the lens. Bigger knocks and falls are rarer. Hmmmm. As I mentioned earlier some filters will go with a "bang" given the smallest knock that I'm sure wou...
Posted by MattMatic on 03/07/2007 - 11:25
smc FA 50mm f/1.4
I don't think ALL my money on an expensive lens is being wasted by fitting a good quality UV filter. If a lens already has thirteen bits of glass, for example, adding one more can't spoil it that much (if it's a good one). I tried a few comparisons - with and without a UV filter - not long after ...
Posted by ChrisA on 03/07/2007 - 11:31
smc FA 50mm f/1.4
It is interesting to hear about the shards problem - it is a bit of a worry, I must say. Yes, it's worrying me too now. It might be the thing that finally changes my mind! So far, though, I've never broken a filter, but have scratched and marked a few.
Posted by iceblinker on 03/07/2007 - 11:40
