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Nothing renders quite like a catadioptric lens, and despite the hate they get, they're actually not that hard to work with (and IMO) are actually razor-sharp and with excellent color rendering.
I searched your camera model and found out it's a converted Fujifilm wow. How does the "full spectrum" work? It's infrared, red, green or what combination of "bands"?
@rnanclares Yeah, the Full Spectrum conversion removes the internal hot mirror, a coated piece of optical glass that covers the sensor and reflects Infrared and Ultraviolet to ensure proper color rendering of visible light only.
With that removed, your camera will pickup a blend of all UV/Visible/IR, depending upon the scene and the lens' coatings.
I really, really love the look of Full Spectrum and how unpredictable it can be.
Stop me know if you don't want hours of me talking about this 🤣
I'm just curious, so you also need a filter? I want to upgrade my camera and lens, but I know very little about cameras/lenses. I have a Canon 600D (can't recall the model name in the Americas, but I think it's one of the Rebels), and a Tamrom 15-55.
Some more details from KolariVision. If you go this route (I highly recommend it, this is my fourth converted camera), Ilija is a great dude with great products.
A full spectrum camera conversion involves replacing the camera's internal IR cut filter with clear glass, making the camera IR, visible, and UV sensitive.
Please if you can , take a picture of an avocado with your camera, I need to know if it has a strong reflectance in the IR (compared to the leaves of the tree) 🤣
@rnanclares No pictures yet, but I took the bag by an open window and looked through the X-T2, and the skin shows up a kind of color-shift black/purple in full-spectrum lighting.
I don't have access to Avocado plants, but I see no reason to believe the foliage would be anything but white-pink, like pretty much every plant.
The question becomes will that contrast remain under dense canopy where Visible light and UV are diminished and it's mostly IR... And if using a bandpass filter will help.
I'm super limited right now, I sold my prior camera and all the filters, so I just have full-spectrum and I can make a very rough 720nm-ish out of a black trash bag.
That lowers the probability of making a demo project... I need someone who already owns one so I can borrow it. Maybe a simple sequoia and a Phantom 4 can do the job, flying low or taking oblique pictures.
@rnanclares I'm saving up for the magnetic clip-in filters, and likely will get the KolariVision KolariChrome first, because who doesn't want to shoot like Kodak AeroChrome?!
Raúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •I love this giant, stupid lens!
Nothing renders quite like a catadioptric lens, and despite the hate they get, they're actually not that hard to work with (and IMO) are actually razor-sharp and with excellent color rendering.
Raúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •Yeah, the Full Spectrum conversion removes the internal hot mirror, a coated piece of optical glass that covers the sensor and reflects Infrared and Ultraviolet to ensure proper color rendering of visible light only.
With that removed, your camera will pickup a blend of all UV/Visible/IR, depending upon the scene and the lens' coatings.
I really, really love the look of Full Spectrum and how unpredictable it can be.
Stop me know if you don't want hours of me talking about this 🤣
Raúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •You need filter(s) if you want to target specific regions of the spectrum.
So, if I brought a Hot Mirror Filter, I can shoot like normal.
I used to have 590nm, 720nm, 850nm, 1000nm, and the KolariVision Blue/NIR NDVI filters.
https://kolarivision.com/full_spectrum_conversion/
Some more details from KolariVision. If you go this route (I highly recommend it, this is my fourth converted camera), Ilija is a great dude with great products.
Let him know I recommended you to him 😎
What is a full spectrum conversion?
Kolari Vision - Photography Gear & Infrared ConversionsRaúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •You can poke around and see if your camera and lens have been testef6ans rated for performance in infrared there, too.
This project sounds intriguing...
Raúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Nah, it's something pretty simple, counting avocados, I'm thinking it would be easier using some kind of multispectral camera.
I don't think it can be done with a drone, because you can't see them from the sky, so maybe a camera mounted on a quad bike could do the job.
Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •Oh yeah, that sounds awesome!
Hmm, could work.
Raúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Raúl Nanclares 🍜
in reply to Raúl Nanclares 🍜 • • •Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •I've got a bag of mostly green-skin Haas Avocado.
Will that do, or do you need them riper?
Also, it's the middle of the night, no sunlight right now to test.
I'll try to remember tomorrow 😬
Raúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •No pictures yet, but I took the bag by an open window and looked through the X-T2, and the skin shows up a kind of color-shift black/purple in full-spectrum lighting.
I don't have access to Avocado plants, but I see no reason to believe the foliage would be anything but white-pink, like pretty much every plant.
The question becomes will that contrast remain under dense canopy where Visible light and UV are diminished and it's mostly IR... And if using a bandpass filter will help.
Raúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Thanks!
Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •Do you need more testing from me?
I'm super limited right now, I sold my prior camera and all the filters, so I just have full-spectrum and I can make a very rough 720nm-ish out of a black trash bag.
Raúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •Please do!
I hope to have some more filters soon, just have to save up and justify it to myself 🤣
Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •Once you add either multi or spectral labels to a camera, you can bet the price will make you cry 🤣
Raúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •You might be pleasantly surprised by what you can see with a full-spectrum conversion and an appropriate filter.
Have you seen the InfraGram project by The Public Lab?
https://publiclab.org/wiki/infragram
You can get a proof of concept done pretty light using their information.
Raúl Nanclares 🍜
in reply to Brett Edmond Carlock • • •Brett Edmond Carlock
in reply to Raúl Nanclares 🍜 • • •I'm saving up for the magnetic clip-in filters, and likely will get the KolariVision KolariChrome first, because who doesn't want to shoot like Kodak AeroChrome?!