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PostPosted: Sat May 23, 2009 10:56 pm    Post subject: Reply with quote
I want to go macro too Smile
nice photos


PostPosted: Sun May 24, 2009 12:13 pm    Post subject: Reply with quote
trifox wrote:
magnet-2009 wrote:


The fly's eye has a "bad" pixel, hasn't it? Laughing


I LOVE THIS Very Happy Very Happy


But we don't know how many megapixels they have ..
so. one pixel less -- it doesn't matter Smile

tf Very Happy


Insect vision has a much lower spatial resolution than we have, and only close up they see sharp. In flight they see only blurry contours, so this is why some flowers have developed some very prominent UV-hightlighted "landing platforms", like that Rudbeckia



PostPosted: Sun May 24, 2009 8:16 pm    Post subject: Reply with quote
Even though insects "bug" me - for some reason I'm apprehensive
even just looking at an image of an insect - these are just
marvelous, and show a masterful use of the lens at hand.

I wish I wasn't so wimpy around insects, but I think it MIGHT
be because when I was a child, a SWARM of spiders took residence
in my bed...awful for a kid to experience. Shocked


PostPosted: Sun May 24, 2009 8:42 pm    Post subject: Reply with quote
Beautiful Poilu. Very nice work.


PostPosted: Mon May 25, 2009 8:08 am    Post subject: Reply with quote
kds315* wrote:
trifox wrote:
magnet-2009 wrote:


The fly's eye has a "bad" pixel, hasn't it? Laughing


I LOVE THIS Very Happy Very Happy


But we don't know how many megapixels they have ..
so. one pixel less -- it doesn't matter Smile

tf Very Happy


Insect vision has a much lower spatial resolution than we have, and only close up they see sharp. In flight they see only blurry contours, so this is why some flowers have developed some very prominent UV-hightlighted "landing platforms", like that Rudbeckia



KLAUS!

this is an amazing fact!

So insect is able to see just the outer area of the flower?


PostPosted: Mon May 25, 2009 10:00 am    Post subject: Reply with quote
trifox wrote:
kds315* wrote:
trifox wrote:
magnet-2009 wrote:


The fly's eye has a "bad" pixel, hasn't it? Laughing


I LOVE THIS Very Happy Very Happy


But we don't know how many megapixels they have ..
so. one pixel less -- it doesn't matter Smile

tf Very Happy


Insect vision has a much lower spatial resolution than we have, and only close up they see sharp. In flight they see only blurry contours, so this is why some flowers have developed some very prominent UV-hightlighted "landing platforms", like that Rudbeckia



KLAUS!

this is an amazing fact!

So insect is able to see just the outer area of the flower?


NO, of course not, it is mjuch more complicated than that. An insect with trichromatic vision usually sees UV+Blue+Green or with tetrachromatic vision UV+Blue+Green+Red. No-one has ever tried to simulate how that might look like - but I did and came up with a special solution to that. I remapped UV into the visible domain, i.e. I trie dto make UV visible for us ... this then looks like that using Bidens ferulifolia as an example which has about the same "bullseye" pattern:

VIS:


UV:


Simulated bee vision:


I did not want to hijack that thread of course, but since there was this question...more is in my UV BLOG (see footer)
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