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Recently I was asked by an individual (who wishes to remain anonymous) if I would allow Arrow to be drawn in an commission of an advertisement for a tetrachromatic camcorder. I said it was fine, and asked my share, and was flattered when I was told it was a gift!
Human vision is relatively good compared to many animals, but it's not top level. Humans see in three colors (Red, Green, and Blue), and every other color your brain 'sees' is made from a level of filtering in the brain to discern the signals. (It's commonly mentioned that mantis shrimp have seventeen different color receptors in their eyes. While true they have more types of color receptors, they don't see much more color range than humans; they just need more photoreceptors in general because of a lack of backend processing power). Human sight generally is from about 400nm (purple) to 750nm (red). Below is "Ultraviolet" and above is "Infrared."
Infrared is well known as the way certain animals 'see' warm objects to hunt, but few endothermic animals use it because they generate too much 'interference' with their own body heat. (Some bats have a level of infrared awareness and this is being studied). Ultraviolet, on the otherhand, can be used...and many birds can! They have a fourth color receptor that sees down to 300nm, making them "Tetrachromats" for "Four colors".
In ultraviolet, the urine trails of many species that birds of prey would be interested in are more visible, and many flowers, fruits, and seeds are also more colorful under it. It's been speculated that some birds that lack visible sexual dimorphism do in fact have plumage variations by gender, but it's in the UV spectrum that humans can't see.
But then anthro avians might have issues, since normal consumer camcorders don't capture ultraviolet light (why would they? Nobody can see it!) but then with actual tetrachromats it becomes more of an issue...
I admit Arrow isn't as dynamic here as maybe he would've been if I used my older fursona, but it works.
Art by Blue-Hearted Jay and go fave the original here
There's also a guest appearance by "Squared", and I'll add a link if I get one!
Hope you enjoy!
Posted using PostyBirb
Human vision is relatively good compared to many animals, but it's not top level. Humans see in three colors (Red, Green, and Blue), and every other color your brain 'sees' is made from a level of filtering in the brain to discern the signals. (It's commonly mentioned that mantis shrimp have seventeen different color receptors in their eyes. While true they have more types of color receptors, they don't see much more color range than humans; they just need more photoreceptors in general because of a lack of backend processing power). Human sight generally is from about 400nm (purple) to 750nm (red). Below is "Ultraviolet" and above is "Infrared."
Infrared is well known as the way certain animals 'see' warm objects to hunt, but few endothermic animals use it because they generate too much 'interference' with their own body heat. (Some bats have a level of infrared awareness and this is being studied). Ultraviolet, on the otherhand, can be used...and many birds can! They have a fourth color receptor that sees down to 300nm, making them "Tetrachromats" for "Four colors".
In ultraviolet, the urine trails of many species that birds of prey would be interested in are more visible, and many flowers, fruits, and seeds are also more colorful under it. It's been speculated that some birds that lack visible sexual dimorphism do in fact have plumage variations by gender, but it's in the UV spectrum that humans can't see.
But then anthro avians might have issues, since normal consumer camcorders don't capture ultraviolet light (why would they? Nobody can see it!) but then with actual tetrachromats it becomes more of an issue...
I admit Arrow isn't as dynamic here as maybe he would've been if I used my older fursona, but it works.
Art by Blue-Hearted Jay and go fave the original here
There's also a guest appearance by "Squared", and I'll add a link if I get one!
Hope you enjoy!
Posted using PostyBirb
Category Artwork (Digital) / General Furry Art
Species Hawk
Size 1757 x 2097px
File Size 3.82 MB
Listed in Folders
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