try out the 360nm UV filter
Sep 29, 2019 13:56:14 #
wingclui44
Loc: CT USA
Recently ordered and got a 360nm UV filter and tried it on my full spectrum converted P&S. I don't know what I will get! This is the result:
1) image from the camera with custom WB;
2) After converting it to B&W with darkening the sky;
Comparing to 3) converted to B&W from image taken with 590nm IR filter.
Any suggestion, I am still new in IR & UV photography! Thank you!
1) image from the camera with custom WB;
2) After converting it to B&W with darkening the sky;
Comparing to 3) converted to B&W from image taken with 590nm IR filter.
Any suggestion, I am still new in IR & UV photography! Thank you!
Sep 29, 2019 14:50:18 #
I'm not up on Infared. But these photos definitely speak to me. The trees and the car somewhat are distracting but the photos make a powerful statement.
It would be nice for a Hogger to bring out some information and techniques how to do infrared.
I remember years ago trying with some infrared film. Somewhat disappointing.
I tried using an ultraviolet lens years ago. It too was disappointing. Hence, why I stopped experimenting with the far ends of the spectrum.
It would be nice for a Hogger to bring out some information and techniques how to do infrared.
I remember years ago trying with some infrared film. Somewhat disappointing.
I tried using an ultraviolet lens years ago. It too was disappointing. Hence, why I stopped experimenting with the far ends of the spectrum.
Sep 29, 2019 17:22:59 #
wingclui44 wrote:
Looks promising! Recently ordered and got a 360nm UV filter and tried it on my full spectrum converted P&S. I don't know what I will get! This is the result:
1) image from the camera with custom WB;
2) After converting it to B&W with darkening the sky;
Comparing to 3) converted to B&W from image taken with 590nm IR filter.
Any suggestion, I am still new in IR & UV photography! Thank you!
1) image from the camera with custom WB;
2) After converting it to B&W with darkening the sky;
Comparing to 3) converted to B&W from image taken with 590nm IR filter.
Any suggestion, I am still new in IR & UV photography! Thank you!
I use a Full Spectrum Sony a6000 mirrorless camera, but have not yet attempted UV-only photography. The filters I’ve tried so far have mostly been bandpass, cutting off wavelengths < 470 nm, 500 nm, 550 nm, 590 nm, 610 nm, 665 nm, 720 nm, or 830 nm. To my knowledge, the only time my camera might catch some UV light is when I have no filter applied; however, my understanding is that most, if not ALL the lenses I own, have UV-blocking coatings applied to them.
Thus, I have two questions for you, wingclui44:
1. Do you know whether the built-in lens of your P/S camera has an anti-UV coating on it? If so, what is the range of wavelengths it blocks?
2. What is the range of wavelengths that your "360 UV filter" blocks? What is the range that it passes?
Sep 29, 2019 21:18:26 #
wingclui44
Loc: CT USA
Very sorry, I don't know the answer for your questions!
Number one, My P&S is a Panasonic TZ-3, no idea if it's lens has UV blocking coating!
Second, My daughter order this UV filter for me from Amazon with out any information but only known 360or 365nm, she has already deleted the ordering information, but I still remember a little it will block the wave between 365-7xx nm, so it means it will let some infra-red passing through.
The image above that came out from the camera shows the sky violet-blue, and the rest colorless.
I'm confusing my self too.That's why I am posting this for answer.
It's from China, It's normal getting minimal information!
Number one, My P&S is a Panasonic TZ-3, no idea if it's lens has UV blocking coating!
Second, My daughter order this UV filter for me from Amazon with out any information but only known 360or 365nm, she has already deleted the ordering information, but I still remember a little it will block the wave between 365-7xx nm, so it means it will let some infra-red passing through.
The image above that came out from the camera shows the sky violet-blue, and the rest colorless.
I'm confusing my self too.That's why I am posting this for answer.
It's from China, It's normal getting minimal information!
Sep 29, 2019 21:53:28 #
wingclui44 wrote:
Well, off the top of my head, could you take photos of the same scene(s) again in two different ways? 1. Using this converted camera without any filter placed in front of the lens, and 2. using a separate "regular" (i.e. visible light-only) camera, even a smartphone camera. Of course, you should probably take them at about the same time of day. Very sorry, I don't know the answer for your quest... (show quote)
If you cannot reproduce the same scene, then pick a new daytime scene and take photos three ways, i.e. the two I listed above plus with this UV filter in place. I'm thinking that this may help discern an underlying difference, though I'm not sure. Since I have no actual experience doing UV-only photography yet, this might be a case of "the blind leading the blind."
Good luck.
Sep 30, 2019 06:46:03 #
Scruples wrote:
... It would be nice for a Hogger to bring out some information and techniques how to do infrared. ...
Scruples See my article on IR/UV combo
https://www.uglyhedgehog.com/t-608767-1.html
Read excellent coverage at:
https://kolarivision.com/articles/choosing-a-filter/
Scruples, also see my conversion of a Panasonic TS-3... simple:
https://www.uglyhedgehog.com/t-547605-1.html
You can swap channels with great skill using the antiquated Adobe photo software or Use lazy method with freeware from Flaming Pear... Red/Blue swap is the typical to make the sky blue and the vegetation redish... but there are other one click swaps.
http://www.flamingpear.com/freebies.html
wingclui44 what was the source of your 360 nm filter... is it pure UV or UV-IR combo. Do you have the filter spectra?
Sep 30, 2019 07:38:44 #
dpullum wrote:
Thanks for posting the link to the Topic you created on September 2nd, dpullum! I missed it; I like the that graph of the spectra of various filters you included. Scruples See my article on IR/UV combo
https://www.uglyhedgehog.com/t-608767-1.html ...
wingclui44 what was the source of your 360 nm filter? ... is it pure UV or UV-IR combo? Do you have the filter spectra?
https://www.uglyhedgehog.com/t-608767-1.html ...
wingclui44 what was the source of your 360 nm filter? ... is it pure UV or UV-IR combo? Do you have the filter spectra?
As for your last three questions to the OP, if you review his answer to my question on this matter, you’ll see he (no offense intended,) admitted he was clueless, i.e. he does not have any of that information. Thus, we have an empirically-based question.
I agree, I believe that his photos have a definite IR component, and frankly, I (pun intended
) am clueless as to whether there is any discernible UV component in the image. That is why in my last post I suggested wingclui44 deconvolute the process by acquiring images without any external filter attached. Have you, dpullum, done any UV-only photography? Any UV + visible light sans infrared photography? Any UV-fluorescence (aka "black light") photography? I have yet to do any of the above myself, yet.
Sep 30, 2019 09:03:40 #
wingclui44
Loc: CT USA
lev29 wrote:
Well, off the top of my head, could you take photo... (show quote)
I will try again as you suggested, I don't have any experience neither, and don't know what this type of UV filter can do, and random picking this 365nm for trying.
Sep 30, 2019 09:11:00 #
wingclui44
Loc: CT USA
dpullum wrote:
Scruples See my article on IR/UV combo br https://... (show quote)
I don't have any information of it, when I received it last week, it came from China, It was packed very securely in a thick foam box. My daughter ordered for me from Amazon, I have already asked her by e-mail (She lives in the other state) to find out it's specifications. I would like to know myself too. Stay put!
But I believe that is a UV-IR combo.
Sep 30, 2019 09:22:17 #
wingclui44
Loc: CT USA
I just got the information from my daughter:
http://www.tangsinuo.com/product/60828751636-804193211/365nm_UV_Pass_Filter_ZWB2_UG1_U_360_Visible_Light_Cut_Black_Optical_Glass_used_on_flashlight_fluorescence_testing_Photography.html
http://www.tangsinuo.com/product/60828751636-804193211/365nm_UV_Pass_Filter_ZWB2_UG1_U_360_Visible_Light_Cut_Black_Optical_Glass_used_on_flashlight_fluorescence_testing_Photography.html
Sep 30, 2019 10:13:16 #
wingclui44 wrote:
There you go... spending my money.... there I go ordering another filter... well cheaper than playing golf on a Trump Golfcourse.
OK, it is the better of the ZB family, the ZB-1 lowest IR pass or greatest blockage of IR. Cost with shipping for a 52mm is about $21. 80% UV pass, 30% IR pass. It appears to be a threaded framed screw-on filter.
https://www.ebay.com/itm/52MM-camera-UV-Pass-Filter-ZWB1-UG11-Visible-Cut-Black-Glass-340nm-Bandpass/273954576852?hash=item3fc8f719d4:g:LzkAAOSwnJhdIMXU
\
Ordered, delivery Nov 1
Sep 30, 2019 10:41:19 #
wingclui44
Loc: CT USA
dpullum wrote:
There you go... spending my money.... there I go o... (show quote)
Good for you, and tell me your experience with your new filter later please!
Thank you!
Sep 30, 2019 11:32:21 #
wingclui44 wrote:
Now THAT'S what I call useful information! And thanks for the link. By the way, I see you reside in CT. What is "the" other state your daughter lives in?
Sep 30, 2019 11:54:56 #
dpullum wrote:
With respect, dpullum, I think there may be 1 or 2 typographical errors in this reply of yours. In particular, did you mean, "... the better of ..." or instead "... a member of ..."? If the former, then I am confused. ... OK, it is the better of the ZB family, the ZB-1 lowest IR pass or greatest blockage of IR. Cost with shipping for a 52mm is about $21. 80% UV pass, 30% IR pass. It appears to be a threaded framed screw-on filter. https://www.ebay.com/itm/52MM-camera-UV-Pass-Filter-ZWB1-UG11-Visible-Cut-Black-Glass-340nm-Bandpass/273954576852?hash=item3fc8f719d4:g:LzkAAOSwnJhdIMXU
You also write "ZB family" and "the ZB-1", but when I employ "ZB filter" as a search term, the result is a wild assortment, whereas “ZWB filter" yields a coherent result that fits the current topic.
Here, for example, is a result of the latter search: https://www.ultravioletphotography.com/content/index.php/topic/2609-those-zwb-filters-again/ and within this URL is another of potential interest:
https://www.ultravioletphotography.com/content/index.php/topic/2553-another-red-seaweed/page__p__19538#entry19538
Within this latter thread, there is a post by UlfW deriding the reliability of ZWB filter spectra.
I could be mistaken, but I get the impression that ZWB is a proprietary type of filter material produced by a particular manufacturer in the PRC. Does anyone reading this know better?
Sep 30, 2019 14:47:41 #
wingclui44
Loc: CT USA
lev29 wrote:
Now THAT'S what I call useful information! And thanks for the link.
By the way, I see you reside in CT. What is "the" other state your daughter lives in?
By the way, I see you reside in CT. What is "the" other state your daughter lives in?
NY, I moved to CT in 2012, I retired in 2007 in NY, after few years, I and my wife decided moving to a more relaxing and quieter environment. My daughter is working in NY, She and her husband come to see use so often. My son and his family of four are living and working in CT.
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