Westminster fountain at sunset

by Jorge Córdoba

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0
votes
0answers
40 views

what would be a good but inexpensive telescope lens? [on hold]

I have no knowledge about cameras or lens what-so-ever. However, I am looking to buy a telescope lens for my husband, who loves photography. He has been saving up and looking to buy one. I want to ...
0
votes
0answers
56 views

help me to decide between these [duplicate]

I read a lot of answers posted by you on stackexchange and i am big fan of yours knowledge and yours photography. I am new to photography and want to buy a DSLR body, i don't know much about ...
0
votes
2answers
85 views

Camera body vs lenses - which is more important technically? [duplicate]

I am writing an article for a case study, explaining which one is more important in Photography, either the camera body or the lenses, and in which, one has to invest more? This is a technical ...
3
votes
4answers
1k views

What is relationship between focal length and shutter speed?

I am very new to photography and am trying to grasp the basics of it these days. Can someone please help me understand the relationship between focal length of a lens and shutter speed of camera?
4
votes
4answers
410 views

Who tells my camera which apertures my lens has

When I mount one of my lenses on my camera, my camera knows which apertures the lens has. So I ask my self: Why does my camera know that for example lens XY has a max. aperture of 2.8 and a min. ...
2
votes
2answers
150 views

What would appear on polaroid film exposed without a lens?

I am trying to get a better understanding how lenses & focusing works. Let's say that I am standing in a completely dark room holding a unexposed polaroid film, and turn on a TV in the other ...
13
votes
2answers
5k views

How iPhone 5S can have such a big aperture? f/2.2?

I thought that in order to have a big aperture such as f/2.2 a big amount of light should be able to enter to the sensor and in order to do it, a big lens was needed. How is it possible that in the ...
1
vote
4answers
176 views

Photography: the technical side [duplicate]

I love photography. To be honest, I've never seriously taken even one photo, but I love it. Looking at other people's work on sites like 500px and other discussions on this site, it really makes me ...
2
votes
2answers
188 views

What is zoom multiplication based on?

When a camera says that it has, for example, a 10x optical zoom, what exactly is that 10x based on? Is it the angle of view of the human eye, the focal length of the camera, or what?
1
vote
2answers
223 views

What does different focal length offer me?

I have a beginner photographer and I have spent a lot of time learning the basics (exposures, lenses, focal lengths, crop factor etc). It's all good except I'm not so sure when I need to buy lenses of ...
-1
votes
1answer
385 views

Below which focal length are lenses considered to be wide angle?

Focal length is the only factor that decides whether a lens is described as being normal or wide angle. Below which focal length are lenses considered to be wide angle? Is this focal length the same ...
12
votes
4answers
3k views

What is a normal lens?

I've heard people call 50mm lenses "normal lenses". For a lens to be considered normal, does it have to be exactly 50mm or is there some leeway? Does the normal focal length depend on crop factor of ...
47
votes
10answers
3k views

Is it lenses which make your photographs, not camera bodies?

I read somewhere on this site itself that you should spend more on your lenses and less on your camera bodies. Is it a myth or a fact that mostly it is the lenses which make your photographs not the ...
8
votes
6answers
4k views

How do I get the 'equivalent' focal length for a DSLR lens for my camera?

On my Nikon D3000, how do I figure the focal length equivalence? In other words, if I want a lens that is just like a 50mm lens on a 35mm film SLR, I need to multiply by a factor. What is the factor, ...
7
votes
3answers
3k views

What are the advantages of a lens having a fixed maximum aperture?

What are the advantages of a lens having a Fixed Maximum Aperture? Previous answers have indicated that "pros tend to want constant apertures in zoom lenses". While in general lenses with a fixed ...
13
votes
7answers
2k views

Is there a difference in the sensor technology in entry level cameras vs. that in pro or semi-pro DSLRs?

Obviously there are differences in everything, both optics-wise and mechanism-wise, but I would like to know: Are the materials used to construct sensors (disregarding sensor size) different at any ...
4
votes
7answers
1k views

What's a Good All Purpose Compact Lens for a dSLR …?

Following on from an earlier post, I've decided to persevere with the behemoth for a bit and see where it goes. It may lead in the direction of a Canon G11/12 or S90/95 - only time will tell. In the ...
3
votes
6answers
241 views

Anyone got some good, simple introductory lens guides?

I want to educate myself and am immersing myself in everything photography-related. I'm picking up the concepts fast because I was a physics major in college (and thus have some background in optics) ...
22
votes
3answers
6k views

How can a 18-55mm lens focus on objects beyond 55mm?

I guess this is a total noob question, but doesn't 18-55mm mean that it can focus only up to 55mm?
10
votes
5answers
6k views

What does the f-stop printed on the lens refer to?

I have read this,so I know what an f-stop is, but what does the number on printed the lens signify? Is this is the maximum f-stop, the ideal, or something else?
17
votes
5answers
1k views

How does a circular lens produce rectangular shots?

Is it something like the sensor captures a circular image and then what we get is the cropped version? Something like this: Or did I get it completely wrong?
12
votes
4answers
4k views

How can a lens like a 18-55mm have more than one focal length?

How can a lens have a range of focal lengths? Shouldn't it be a single number? Isn't focal length supposed to be fixed for a lens of a particular shape and geometry? What am I missing? How many ...