The color-blue tag has no wiki summary.
22
votes
3answers
2k views
Why is the blue channel the noisiest?
It is widely observed that the blue channel in digital cameras is the noisiest. I've certainly noticed that with my camera. Why is this?
Is it an artifact of some particular technology (e.g. Bayer ...
11
votes
2answers
292 views
What's the reason for this exceedingly blue reflection from buildings in this image?
I've noticed that lately my camera has some issues with blue neon lights. Here's an example shot.
You can notice the effect in the reflection of the water in a building and in the blue dome of ...
8
votes
2answers
332 views
What type of camera setup is required to take photos of luciferase?
I'm working with luciferase which has a wavelength of blue 480 nm and I want to be able to take a photo of it. The trouble is, I can see the luciferase glowing in all of its glory in front of me but ...
7
votes
2answers
547 views
Why are sensors less sensitive to blue light?
This is a followup question to Why is the blue channel the noisiest?. The simple answer to that question is that sensors are less sensitive to blue, and therefore require more amplification, which ...
5
votes
3answers
563 views
Why does blue sky gets rendered as black in black and white film photos?
I recently started using a film camera along with my digital camera. I took a picture with both the cameras. This one is from digital camera:
Left is the photo without editing and right after ...
5
votes
2answers
219 views
How can I avoid or correct the “inverse Ageratum effect” in digital photography?
I was used to the ageratum effect with film cameras: as the red pigment on film is much more sensitive to IR than the humman eye, some flowers (such as the ageratum) appear pink in a photograph while ...
4
votes
3answers
174 views
How can I avoid a blue sheen on red objects?
I have taken a few images of (Very) red objects recently, under both flash and natural light separately, and seem to be getting a subtle, but annoying blue sheen, which is not apparent to the eye.
No ...
3
votes
6answers
645 views
How do I correct a photo with too much blue?
I'm pretty much a beginner photographer. I just point and shoot with auto settings and I have no idea how to tweak photos with photo editing software.
I took a photo which can be found here:
The ...
3
votes
2answers
864 views
How can I fix the color of blue photos using settings from “good” photos?
Imagine how photos with a bad blue filter look. I can recolor those pictures with the color filters from any image manipulation program like gimp.
Now my question is: can I "grab" the right settings ...
2
votes
3answers
368 views
