Search results for 'uv filter' - page 321
pentax kr and a Hoya R72 InfraRed filter
One quick check you can do to investigate IR sensitivity of a camera is photographing a TV remote (being used) If the camera is sensitve you see a bright spot where the remote is sending it's signal. I checked my K100d with this before splashing out £10 for a R72 clone. :)
Posted by petrochemist on 05/04/2011 - 10:32
pentax kr and a Hoya R72 InfraRed filter
One quick check you can do to investigate IR sensitivity of a camera is photographing a TV remote (being used) If the camera is sensitve you see a bright spot where the remote is sending it's signal. I checked my K100d with this before splashing out £10 for a R72 clone. :) too late! the filter cam...
Posted by jkdlee on 05/04/2011 - 12:22
pentax kr and a Hoya R72 InfraRed filter
the weather looked good today no?? :) so i went to regents park and finally tried out infrared photography.. boy its addictive! here are my first attempts i am happy that the kr is capable of taking decent inrared pics but not so happy about the horizontal/vertical streaks u can see. ...
Posted by jkdlee on 07/04/2011 - 00:25
pentax kr and a Hoya R72 InfraRed filter
The streaks are caused by the light that comes in via the eyepiece. This has an effect because the exposure is so long for the light that comes in through the lens, the tiny amount of light that leaks through the eyepiece gets to make an exposure. You can either use the little slide-in eyepiece ...
Posted by karma mechanic on 07/04/2011 - 07:14
pentax kr and a Hoya R72 InfraRed filter
The second shot has great potential but could do with being sharper. Black and white IR images are more usual, but in this case the colour makes for an attractive shot.
Posted by johnriley on 07/04/2011 - 09:02
pentax kr and a Hoya R72 InfraRed filter
thanks for the comments! i will try that. much appreciated :)
Posted by jkdlee on 07/04/2011 - 15:23
Ultra wide photography guide, please...
Thanks John Looks like I'll be getting rid of my 77mm polarizer filter.
Posted by Ratcatcher on 05/04/2011 - 18:51
Ultra wide photography guide, please...
Thanks John Looks like I'll be getting rid of my 77mm polarizer filter. Don't be too hasty!! Whilst it needs careful use it's definitely worthwhile having - certainly in the 16mm-20mm focal range you shouldn't have too many problems, when I go wider with my DA12-24 to be on the safe side though I n...
Posted by simonkit on 05/04/2011 - 19:21
49mm not on anyones radar...
http://www.7dayshop.com/catalog/default.php?filterwords=7dayshop+Lens+Filter+-+Variable+ND&x=0&y=0&filterwordsalldb=1&r=20110331-2 Tried to get some Heliopan Grad Filters and was told I'd have to get em from Germany Tried to get B+W Versions and the one Shop in the UK that had em didn't! Got ...
Posted by jules on 05/04/2011 - 17:18
49mm not on anyones radar...
for most purposes it is advisable to buy one filter for your largest lens and use step down rings to fit it to your smaller lenses. looks goofy? who cares? lens hood? nope take it off and use your greycard (or hand) to shade the lens.... works, 'nuff said. :wink:
Posted by Don on 05/04/2011 - 17:30
49mm not on anyones radar...
yeah, i wish 49mm filters were a bit more common. but while they aren't as common as 52mm and larger, they're not so rare that i can never get a filter i want. actually, the only filters i use are solid nd and polarising filters. i used to use cokin-a, but gave up on that in favor of travellin...
Posted by gillbod on 06/04/2011 - 13:05
49mm not on anyones radar...
yeah, i wish 49mm filters were a bit more common. but while they aren't as common as 52mm and larger, they're not so rare that i can never get a filter i want. actually, the only filters i use are solid nd and polarising filters. i used to use cokin-a, but gave up on that in favor of travellin...
Posted by jules on 06/04/2011 - 14:20
49mm not on anyones radar...
I've just received a B&W 1000x ND filter from SRS in a 49mm thread - took a while though and I'd more or less forgotten about it till it arrived a couple of days ago. It might mean that they've got some in stock?
Posted by marklj on 08/04/2011 - 12:34
Variable ND filters?
I presume these are crossed polarisers, which will go from quite dark to very dark depending on the rotation position. That was my first thought, too, but then I found a reference to 'ND Filter-wheel' in the ... .. I hadn't heard of those things at all, so I thought I'd put the question out.
Posted by ChrisA on 08/04/2011 - 22:35
Variable ND filters?
Hi, I have just bought a Pentax 28mm f2.8 Soft focus lens. It works well. Sometimes however when I like to use it at F2.8 tom get the full effect, I run out of fast shutter speeds, or my flash is to strong. I want to use a ND filter. Has anybody used the Variable ND filters? If so, ca...
Posted by Horst on 21/07/2014 - 08:04
Variable ND filters?
Hi, I have just bought a Pentax 28mm f2.8 Soft focus lens. It works well. Sometimes however when I like to use it at F2.8 tom get the full effect, I run out of fast shutter speeds, or my flash is to strong. I want to use a ND filter. Has anybody used the Variable ND filters? If so, ca...
Posted by petrochemist on 23/07/2014 - 20:18
How to remove a stuck filter - 3 methods
If the worst has happened and you have a filter on your lens that refuses to budge you have several methods for removal. This worked on a Canon f1.2 85mm lens that got stuck last week. The Grip Method 1 1, On a flat table, attach a rubber strap wrench to the filter, Your hand should be hol...
Posted by RocketNewYork on 16/04/2011 - 02:24
How to remove a stuck filter - 3 methods
you forgot the first method.... take a piece of neoprene (like a mouse pad) press the lens filter into the rubber neoprene and turn... next time don't be silly, just turn it on, don't over tighten it.:wink:
Posted by Don on 16/04/2011 - 02:51
How to remove a stuck filter - 3 methods
Blue-Tak grips better than most things.
Posted by Algernon on 16/04/2011 - 09:26
How to remove a stuck filter - 3 methods
I found pressing the filter into my wife's flip flop and turning to be quite successful.
Posted by Mike-P on 16/04/2011 - 12:44
