Serene Life

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1
vote
1answer
122 views

Do sensors absorb different spectrum of light at different rate, making longer exposures better for blue skies?

I've found one suggestion about taking photo of sky: The sky becomes white in ur photos unlike others who retain blue color?? - Stop down the aperture to f8 or more, decrease ISO to 100 and ...
4
votes
3answers
263 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 ...
11
votes
2answers
346 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 ...
2
votes
3answers
544 views

How to get blue light effect?

How can I get an effect like the blue in this image?
3
votes
6answers
2k 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 ...
6
votes
3answers
305 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 ...
5
votes
3answers
933 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 ...
8
votes
2answers
404 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 ...
6
votes
2answers
1k 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 ...
8
votes
2answers
920 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 ...
27
votes
3answers
3k 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 ...