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1500 questions
22
votes
8 answers
Why don't stock DSLR camera straps have quick-releases on them? And where can I find a simple strap that does?
I have a D7000 and recently got a BlackRapid RS7 strap for it. I love the RS7, but there are times when I'd rather have just a simple strap attached to the eyelets on the camera.
The standard Nikon strap that comes with the D7000 (same on my D80 &…
tig
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22
votes
5 answers
How can a lens with a single focal length focus on more than one plane?
By definition, a prime lens is a fixed lens system with a fixed focal length.
Then, simple physics tells us that it should be able to focus only on one plane (at a fixed distance) in front of it. But in fact you can focus on objects near as well as…
Lazer
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22
votes
4 answers
What causes the fake colors of stars on these pictures?
About two years ago I was at a spot with a beautiful night sky with no moon so I tried to get some pictures of the sky.
I wasn't well equipped back then, I had a 35mm f1.8 lens and Nikon D50. I didn't shoot RAW back then. I had to manually try to…
Tomáš Zato
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22
votes
7 answers
What are the major differences when digitizing slides/negatives with a DSLR vs. a scanner?
A flickr discussion, pointed in an answer to another question, got me excited in scanning old slides & negatives with a tripod, lightbox, macro lens and a DSLR (or with a similar set).
I have rather minimal experience in scanning with a flatbed…
Jari Keinänen
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22
votes
2 answers
Why do animals get green-eye?
Multiple sources on the internet (including answers on this site) claim that red-eye is created by light from the flash reflecting on the blood vessels in back of the eye.
So, why do animals like dogs, that I believe also have red blood (I'm not…
Nir
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22
votes
5 answers
Why choose an 80-200mm over an 18-200mm lens?
Being a beginner, I can't see why I must choose an 80-200 over an 18-200. Are there scenarios where an 80-200 would be preferable over an 18-200?
I will be buying a D7000 soon and am looking at these:
AF Zoom-NIKKOR 80-200mm f/2.8D ED
AF-S DX…
Ygam
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22
votes
6 answers
Does the dpi number reported by camera in JPG have any meaning?
I have two cameras, a 6mpix Panasonic FZ8, and 14mpix Canon A2200.
When I compare shots from two cameras, one of differences I notice is
dpi number that camera reports in JPG info:
FZ8 reports dpi=72
A2200 reports dpi=180
What physical meaning can…
Andrei
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22
votes
7 answers
Is it true that "only photographers care about noise"?
I have been doing a lot of research lately in planning an upgrade to my old D70. One thing that has really jumped out at me is that I've seen the same general phrase repeated on three different discussion sites, from three different users, from…
Nicholas
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22
votes
4 answers
Can manual focus be faster than autofocus?
Recently I've gotten into street photography, and I've noticed there are some situations where it is technically impossible to autofocus, to be precise, when you have moving objects and don't want to focus on the object that is closest to the…
eflorico
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22
votes
8 answers
Why exactly do action photographers need high fps burst cameras?
I've heard that sports and wildlife photographers need cameras that can take lots of photos in a second in the burst mode.
But why? Yes, simple question — but why?
Delta Oscar Uniform
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22
votes
6 answers
How many stops can a digital camera capture?
How many stops can a digital camera capture?
Additionally, does anybody know what the dynamic range is for negative and positive film, the human eye, computer monitor, the television, etc...
Aristos
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22
votes
1 answer
Why does a polarizer lead to these strange visuals above the clouds?
I was on a plane recently and took a few pictures from the window. I had the polarizer on initially, and observed this circular rainbow effect:
.
What is the reason for this?
oarfish
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22
votes
3 answers
How does Picasa process RAW photos?
How does Picasa decide how to process RAW photos? When I shoot in RAW+JPEG the two pictures can look dramatically different. Is it just converting the RAW files upon import, or is post-processing still possible in the application?
JoeGaggler
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21
votes
4 answers
What is GAS and how can I avoid it?
What is this GAS that all the pros talk about?
It sounds pretty bad. How do I avoid it?
Is there a cure?
OnBreak.
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21
votes
4 answers
Portrait Lighting - why are my fill and rim lights overpowered?
I am a beginner in photography and starting to learn about lights in portraiture. In this portrait below, I am using a home-made soft box with a flash inside (on the right), and two 5000K bulbs at 1750 lumens (one on the left as a fill light, and…
Santy.8128
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