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!
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.
lev29
Loc: Born and living in MA.
wingclui44 wrote:
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!
Looks promising!
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?
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!
lev29
Loc: Born and living in MA.
wingclui44 wrote:
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!
Very sorry, I don't know the answer for your quest... (
show quote)
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.
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.
lev29
Loc: Born and living in MA.
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.
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.
lev29 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.
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.
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.
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.
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!
lev29
Loc: Born and living in MA.
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?
lev29
Loc: Born and living in MA.
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.
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?
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?
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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