View Full Version : uv filter over camera lense
05-11-2004, 07:53 PM
i am building a couple cameras with olympus d-360s and I am going to use uv filters to cover the lenses. I have noticed that several people in the past have used 37mm but was wondering if 30mm would work, being that the lens is so small on this camera?
Basically why is everyone using the 37mm size?
05-11-2004, 08:19 PM
I use what ever size i get cheap. I just cut the ring off around it and use just the lens
05-11-2004, 09:06 PM
I think the 30 m.m. allows for a lil cleaner look when complete.since it better fits the lens of the camera But either will work, Just remember the larger you go, the closer you will be to the flash area on the camera.
Most often its prudent to make it no larger than needed. to help span the distance between the flash and the lens areas. You will need this area in between to help seal off Flash bleed. just makes it a bit easier is all.
also going smaller leaves less room for error in drilling and allignment of camera to the lens. to small and you will have rings on the edges of your pics where the hole is caught in the lens window. so layout is Important...
I myself have been using mostly 30 m.m. for sometime now... and they work well.
05-12-2004, 03:10 AM
OBH you hit exactly what i was thinking about on the head. I was trying to move my lens as far a way as possible from my flash because of all the problems I have seen people have. Thanks for the reply.
anyone use polarized filters instead of UV filters?
Pike, I don't think the polarized ones will work well with this application but they might. I did a search on different lens way back when I first began using the lens and read up on what each will do. I believe it said that the polarized one would take out some of the color or something but I will have to dig that back up to be sure. I have a couple of those but they are in 48mm size if anyone needs them. I probably will never find a use for them. I would stay with the UV lens myself. Just my $.02.
05-12-2004, 03:56 PM
Are you guys using regular filters from a camera shop? I went to my local guy and found some 30mm but the threads are so short. Is there something else available? If that is what you are using, how are you sealing them into the case?
Cut the hole just a little smaller then the threads and dremal the hole out till you can screw them in. Or cut it about the same size as the threads and Goop it in. I use Goop on them either way and also add the "liquid electrical plastic" on the inside as well. You can also remove the glass from the holders and glue just the glass to the enclosure.
The regular UV lens works great.
05-12-2004, 06:34 PM
this probably would not be a good application of a polarizing filter. Polarizers are used to remove reflections from say water, tree leaves, or snow. when sun light strikes a reflective surface (like water, leaves, or snow) it "polarizes the light" coming towards you (eg it only works when sun light is at roughly a 90 degree angle from the camera) A polarizer removes this polarized light. This polarized light makes photos look "hazy".
Also, the main thing that you should probably be interested in is that polarizers reduce the amount of light coming into the camera. eg the cam will need a slower shutter speed(more light) to expose the photograph.
This is the same way that polarized fishing glasses remove glare off of the water.
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