Skies are blue: pull the other one!If you think "humans are superior" IN ANY WAY you will be offended by this journal entry and I suggest you simply don't read it, thank you.Skies are blue: pull the other one! by ~IRphotogirl
I'm going to be a little acid here but that is for your own good
We all tend to be convinced our beautiful Earth sky IS blue and period.
A very beautiful blue by the way.
But there is a reason we all see the skies as "blue" when it is not being cloudy.
I discovered that very one scientific reason 2 days ago and I thought you may wanna know the OBJECTIVE and only reason we see our sky blue -and while it is not flattering at all for our species I also find it hilarious as an antispecist myself-but that's another story.
So... Why do we all see the sky as blue?
...Because the blue part of the light spectrum is the shorter wavelengh our eye is capable to detect!
I found 2 graphs that speak for themselves and that will show you just how "superior" our vision reponse is compared to the way plants react to the full
Hot Spot ThotsHot Spot Thots by ~Phostructor
A hot spot is a noticeable color aberration, usually circular, that appears in varying amounts in digital infrared photographs. Some lens and camera combinations seem to be hot spot free, but most lenses show some degree of this problem.
Photographic lenses are not designed with IR in mind. IR focuses differently than visible light. It reflects and diffracts differently than visible light. The lens elements and the inside of the barrel of any given lens may be prone to uncontrolled reflection and diffusion of IR. There may even be reflection from surfaces inside the camera body. Also, different cut-off frequencies of IR filters can reveal differing degrees of hot spotting.
In its most obvious form, the hot spot is an area in the center of the photo that is a contrasting color to the rest of the image, fairly saturated and rendering the elements in that area flat and softer focus. In many cases the hot spot is less obvious and can be managed during post processing.
The most subtle hot s
Ever wondered about IR photography (Infra Red) ?In GeneralEver wondered about IR photography (Infra Red) ? by `gilad
Well, a few words about Infrared.
I will not get too technical cause its not my strong side, just a few words about it. Infrared photographs show a kind of thermo effect. Trees with white leaves and luminous white clouds against colored skies are the most common use for it. Many photographers on DA have tried it in the last few years and it seems to be more and more popular.
The Infrared opens a window on a parallel world intriguingly different to the one we usually see. The effect is surreal ans it shows a different kind of "documenting reality".
Here you can see the scene in normal view
And here is when using the IR filter -
We can't see Infrared light without the filter, we can only see it when It's isolated. Infrared photography is often confused with thermal imaging. It's not, It's just shows an effect similar to that. The difference is basically one of wavelength of electromagnetic radiation.
The filter shows the object be
|More Journal Entries|
New members are welcomed!
Members submit their genuine infrared photographs to our submission folder, which is named after the current month. The submission limit is ten (10!) pictures per week. Photographs which are accepted by the admins in a voting process are later moved to the appropriate gallery folders (e.g. "Magic Trees").
Please indicate in the description of the deviation what ir technique you used - e.g. filter, converted camera, other.
Reasons for declining a submission include:
- Bad lighting conditions
- Over- or underexposures
- Lack of sharpness
- Poor compositions
- Disturbing watermarks (e.g. big dA watermark, or watermark in center of image)
- Non-infrared images or a non infrared "feeling" in the pictures
By declining an image we do not want to discourage your work or your future submissions. Please spend time in our galleries and feel free to ask questions about techniques used to achieve images that impress you.
The making of infrared photos you can find in our tutorial gallery folder -->> r72.deviantart.com/gallery/245… and in `gilad's journal -->> gilad.deviantart.com/journal/5… .
(Last edit: 30-Jan-2013)