Search results for 'uv filter' - page 255
pinhead faces wont stay at 40% magn
Your welcome Joe, Like Scot said use photobucket or flickr it's the simplest way, you can also upload photos in your gallery here on this forum and link us to there I believe (don't know what the rules are?). Just click on gallery and upload photo, the rest explains hisself. to link the image to ...
Posted by Anvh on 01/01/2009 - 00:31
pinhead faces wont stay at 40% magn
Thanks guys for all this information, i will attempt to post the photo(s) one of the sites mentioned. I have looked at the link to high pass filter and I will have to give it a try.
Posted by JoeHarryJames on 01/01/2009 - 17:52
polariser problem
Yes. I'm not sure of the best focal lengths but other factors likely affect this such as time of day, amount of clouds, etc... It is probably best to remove the filter if the effect becomes undesirable. Also important to remove if you're making panoramas from multiple images that include large ...
Posted by amoringello on 12/01/2009 - 19:03
polariser problem
As explained by amoringello in his previous answer, the ideal polarisation effect is achieved when you are pointing your camera at a 90 degrees angle towards the sun. Every lens beneath 35 mm has a wider angle of view as 90 degrees. So using a pol.filter will result in an uneven polarisation effect...
Posted by Malo1961 on 12/01/2009 - 20:22
polariser problem
As explained by amoringello in his previous answer, the ideal polarisation effect is achieved when you are pointing your camera at a 90 degrees angle towards the sun. Every lens beneath 35 mm has a wider angle of view as 90 degrees. So using a pol.filter will result in an uneven polarisation effect...
Posted by simonkit on 12/01/2009 - 22:47
polariser problem
I am lead to believe that if you use a polariser at wide angles you need to reduce the amount of polarising by only partially rotating the filter?
Posted by SteveT on 13/01/2009 - 22:15
Softness Issue
I suppose I should use the tripod more at these shutter speeds, however regards sharpening I understand what you mean and am using Martin Evenings book and have been working through some of the techniques like unsharp mask and High Pass Filter etc. Howvere i have also read that stock agencies do not...
Posted by SteveT on 13/01/2009 - 22:58
Light Meter Calibration
Always a fatal mistake and guaranteed to induce as much paranoia as comparing light meters! Gossen, Lunasix and Minolta (my personal choice) are great and a Weston if you want a solar powered meter. Westons are pretty poor in low light though. Lunasix are made by Gossen and use very expensive batte...
Posted by shim on 26/01/2009 - 14:32
K20d bright spot on images
A mark on the sensor (filter) would result in a dark spot rather than a mainly white one. And the actual sensor can't be harmed by cleaning because it has a filter on top. The sharp and regular pattern of the object on the image indicates something seriously wrong with the sensor or electronics. ...
Posted by iceblinker on 01/02/2009 - 13:19
Filter, or not?
I have just purchased my first brand new lens. (Tokina 19-35), and I'm uncertain, as to whether to buy a Uv filter, for protection. It is sometimes said, that using filters is the mark of an amateur. Well - I am an amateur!, but what I suppose is meant, is that Pros would not put anything, however...
Posted by mowog on 28/02/2009 - 00:21
Filter, or not?
I have a Hoya Pro1 DMC UV filter on every lens I own. As far as I can tell it doesn't affect the image quality (if it does maybe I'm not looking closely enough :wink:) and anyway I feel happier with some level of protection for my front element(s) :)
Posted by Greytop on 28/02/2009 - 01:06
Filter, or not?
The lens hood will provide much better protection and also helps against flares at the same time. I've bought only two UV filters and that was for my first two leneses, havent bought one for my latest two. The coating on the lens it's self is already very tough so I believe that UV filter wont ad m...
Posted by Anvh on 28/02/2009 - 02:04
Filter, or not?
This is an old chestnut and you won't find any degree of agreement between us (do a search for past threads). It depends partly on the sort of person you are (ultra careful, clumsy, etc.), what sort of environment you work in (filthy archaeological sites etc.) and whether you worry about the filter...
Posted by womble on 28/02/2009 - 02:19
Filter, or not?
I don't use them. Most of my photography is out in the countryside, but I still wouldn't consider using them for the reasons Stefan gives. If I were at the beach or other environment where corrosive elements in the air could attack the lens, then maybe I'd use them for those situations. Otherw...
Posted by chirpy on 28/02/2009 - 08:45
Filter, or not?
It's a personal choice. When I shot film I usually had an orange or red filter in front of black and white emulsions and an 81A in front of colour ones. Now I dial in "Daylight" or "Cloudy" as a routine and sort out black and white in Photoshop, so there is no longer a photographic reason for ...
Posted by johnriley on 28/02/2009 - 09:37
Filter, or not?
...and have a sore knee to prove it :D :lol: :lol: :lol: Dan may relate his experience of a shattered filter severely scratching the front lens element when it broke on dropping the lens. That wasn't me (Mattmatic I believe, and I think Gartmore knows of another), but I too use hoods for protecti...
Posted by Daniel Bridge on 28/02/2009 - 10:23
Filter, or not?
Also, with macro photography and also long telephoto shots, I believe that I do see noticeable degradation of the image and light when sticking extra glass in front of the lens that the manufacturers didn't design it for. As an example, the Sigma 500mm f4.5 actually comes with its own protective fro...
Posted by Greytop on 28/02/2009 - 10:30
Filter, or not?
Probably the biggest optical problem with filters will be flare. We are putting a flat pice of glass quite a way forwards of the front element, so the effect of a lenshood will be reduced, and the filter may not be coated as effectively as an SMC lens. At one time Pentax produced a "Ghostless" fi...
Posted by johnriley on 28/02/2009 - 10:39
Filter, or not?
Dan may relate his experience of a shattered filter severely scratching the front lens element when it broke on dropping the lens. That wasn't me (Mattmatic I believe, and I think Gartmore knows of another), but I too use hoods for protection. Ah! My ailing memory ;) Any degradation must also rel...
Posted by chirpy on 28/02/2009 - 10:44
Filter, or not?
It was me - nearly :P It happened twice :roll: and both cases the Hoya Pro filter splintered like anything. Thankfully in both cases it didn't scratch the front element! However, in one case the filter actually cracked the casing - had it repaired by Asahi Photo and is now pristine :D Haven't used...
Posted by MattMatic on 28/02/2009 - 10:49
