| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Corymbia | " Hi Chris, Thanks for your answer! Very helpful. 1) Regarding the reflectance targets. I bought a dozen of ceramic tiles in different colours (inc..." | Read more » | almost 6 years ago | |||
| cfastie | " You are correct that your multi-day observation will present some problems. It is possible that doing a custom white balance on each day will comp..." | Read more » | almost 6 years ago | |||
| Corymbia | " Hi Chris, Many thanks. I managed to get a DB660/850 filter and should have my camera (Olympus E-M10 Mark II) converted this week. It did cost an a..." | Read more » | almost 6 years ago | |||
| cfastie | "The primary advantage of dual band filters is that they pass much narrower bands of wavelengths than red or blue filters (which also pass NIR). Th..." | Read more » | almost 6 years ago | |||
| Corymbia | "Hi, thanks for the post. I'm planning to re-convert my NIR-adapted camera (currently with a blue filter) due to its rather poor performance in dete..." | Read more » | almost 6 years ago | |||
| cfastie | "You betcha there's research about how mammal grazing and browsing impact carbon and nutrient cycles. A couple of my buddies from graduate school de..." | Read more » | over 8 years ago | |||
| pdhixenbaugh | "Awesome techniques! Is there any research on the guiding assumption that deer have an effect on the amount of carbon sequestered? I would imagine ..." | Read more » | over 8 years ago | |||
| patcoyle | "Chris, Very nice results. Interesting. I love the venison steak in the closing remarks of the video. Pat " | Read more » | over 8 years ago | |||
| Claytonb | "@Thorsten - you are correct the images were mislabeled. Thanks for the heads up. I have corrected the labels. Thanks again, Clayton " | Read more » | almost 9 years ago | |||
| Thorsten | "@Claytonb, thanks for the test. I assume the images are correct but the channels in the image captions are somehow mixed up. I guess it should be: ..." | Read more » | almost 9 years ago | |||
| cfastie | "Okay, looks good. You just have to put carriage returns or two spaces after a line or an image to make it insert a return. " | Read more » | almost 9 years ago | |||
| Claytonb | "The filter size I have in the Canon S100's are 8.9 X 7.9 X 1. The sensor screws are each backed out approximately 3/4 turn from the factory positio..." | Read more » | almost 9 years ago | |||
| Claytonb | "@cfastie Apologies Chris I had to fix the image layout and labels and couldn't edit right so I'm reposting.These are from the MidOpt DB 475/850 and..." | Read more » | almost 9 years ago | |||
| cfastie | "Wow, the 660/850 camera focuses well across the image. That's good to know it can be done with a 1.0 mm thick filter. The 475/850 camera looks a li..." | Read more » | almost 9 years ago | |||
| cfastie | "Hi @Claytonb, That's good to know. Did you compare the different channels to see if some showed any vignetting? A photo of an evenly lit solid fie..." | Read more » | almost 9 years ago | |||
| Claytonb | "@cfastie -I can confirm that mounting the filter internally does correct the vignetting problem. I have mounted a DB475/850 and DB660/850 in place ..." | Read more » | almost 9 years ago | |||
| patcoyle | "Thoughtful discussion. Thanks. " | Read more » | almost 9 years ago | |||
| cfastie | "I hadn't considered aperture as a reason for the vignetting. I assume it is related to the angle at which the light enters the filter. Dichroic fil..." | Read more » | almost 9 years ago | |||
| Claytonb | "@cfastie -Hi Chris, Is it possible that the vignetting your seeing is related to wavelength interference due to aperture size? Have you tried a lar..." | Read more » | almost 9 years ago | |||
| cfastie | "I took another batch of photos (research note soon) with ISO 200 and the shutter speed at 1/30 second. The f-stop varied between f/2 and f/5.6. It ..." | Read more » | almost 9 years ago | |||
| Claytonb | "@cfastie -Great work Chris. Have you tested to see what your max shutter speed is with the DB filter on a normal sunny day with same ISO or slightl..." | Read more » | almost 9 years ago |