What about the extinction ratio of the filter?
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Hello. I'm not sure what you're referring to with the "extinction ratio" of the filter. If you are perhaps referring to the filter factor - i.e. the amount of f-stop exposure compensation when using the filter with a manual exposure camera or light meter - I believe for this particular filter that value is 1. Tiffen has a small section on Filter Factors you may find helpful here: http://www.tiffen.com/tiffen_edu_camera_filters.html Please let us know if there is anything else we can assist with. Deven Morgan Event Cameras
1435837
50 Micron pre-filter and 5 micron post-filter. The filter is more densely wrapped toward the core.
1055663
I would thank that you would. Have to read all of the spectra for each model # and compare closely, could be an extra coating on the linse, could be minimem focal distence just compare very closely
1419170
I don't use clear filters because they can have a distorting. I use my polarizer and ND filters but that's it.
2020623
I have one of these. I use it TI monitor the effectiveness of my RO filter module.It works great and it is cheap. Since I am not a testing lab, I can not say that it has 1 ppm resolution, but I can tell you it very well may.
1935193
Yes. I have been able to stack all the filters all at once and use it to get very close to my subject. But at that range, the shadow of the camera obscures the subject. In addition tothat, chromatic abberation (purple fringing) gets worse as more close up filters are added. the +10 alone exhibits a lot of purple fringing. I hope this helps.
886082
The lens should indicate what filter diameter it uses. Look for a symbol like an O with a slash through it, which will be followed by a number. That number is the filter size in mm.
144389
I tried just now with both a red and green laser. The red passed right through. The green was greatly diminished but still passed through, just not very much. So, I doubled the filter - 2 sheets worth and the green did not pass through at all. However it reflected back towards the laser as if bouncing off a mirror.
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Good Nicole! This filter is hero3 +, I would remind you that the LCD only came a back door and not change the complete housing. The hero3 brought the case that enduring 60 meters and is clearly distinguishable by the small screws on the lens. So I recommend that before buying the filter look good in the photos and the model of your camera body. Filter is 100% worth, improves the image severely! I hope resolve you doubts!
327500
I'm not much a camera tech so I can't authoritatively answer your question, but I have my polarizing filter on top of a regular daylight filter on my Nikon D40.
1469915
50mm 1.8: filter size - 52mm50mm 1.4: filter size - 58mm50mm 1.2: filter size - 72mmGoogle to double-check
104453
Mort, It's easier to start with the second number. You'll need 8X (eight times) longer shutter speed for the same level of exposure on the sensor (or film) as you would without the filter. The first number represents the multiple of the f-stop log-density (0.3) with regard to how much light the filter is letting through. Mathematically 0.9 = 0.3 x 3. So this is a 3-stop filter, meaning that it is only letting through (1/2) * (1/2) * (1/2) = (1/8) of the light that hits front of the filter. Notice that the 8 and 1/8 are reciprocals. If the filter was a 3.0-1000X, it would be a (3.0 = 0.3 x 10) 10-stop filter letting in 1/1000 the light and requiring 1000X longer shutter speed for the same exposure level as without the filter - actually this should be 1024X, but it makes the math easier when you have a round 1000. You can of course stack filters, say the 0.9-8X and the 3.0-1000X for example, and you would have a 3.9-8000X, quite dark. Hope that help, Mark
30419
You should probably call the manufacturer. A quick search of Adorama and B&H does not reveal the answer (both sites carry this filter).
1430389
Hello BenYou can use any of the ND filters, 2, 4, 8, 16 or 32 depending on how bright it is. ND filters darken the scene by certain amount of stops depending on the ND filter used.Polarizing filters are often used to eliminate reflections though you can still use it for bright scenes. None of the rest would be useful for what you're doing (underwater, macro or UV).
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I'm assuming that it is dependent on the volume of water that passes through the filter. I haven't actually tested it.
737385
62mm - Get a quality filter as it will degrade the image quality if you don't
288126
Yes, different filtering speeds are available. "Qualitative" is relatively fast filtering. Others have tighter openings and filter more slowly with a higher recovery.