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Linked Questions

3
votes
2answers
2k views

What is the conversion between focal length and times zoom? [duplicate]

Possible Duplicate: How do I convert lens mm to optical zoom times? What is the conversion between focal length in mm (e.g. 50mm) and x zoom (e.g. 20x) commonly used in compact cameras? Is ...
0
votes
4answers
2k views

Nikon DSLR and optical Zooming [duplicate]

I want to buy a professional camera like Nikon D300. I googled a lot but did not overcome the following dubs. 1) I want a high optical zooming camera. In DSRL specification no zooming is specified. ...
0
votes
2answers
704 views

How does focal length relate to macro magnification? [duplicate]

I'm new to photography and would like to know a little more about zoom lens, The main thing I wonder about is this, I have a Fujifilm S4000 camera that claims to have 30x magnification. The new ...
1
vote
1answer
418 views

Effective zoom of Sony 55-210 lens (e-mount for NEX series camera) [duplicate]

According to Sony's website this lens has a zoom factor of 3.8. I currently have an 18-55 lens that came with my NEX-3F that has a zoom factor of ~3.1. Since the 55-210 pics up where the 18-55 leaves ...
-1
votes
2answers
210 views

slr 100mm to 300mm vs 10x 20x [duplicate]

SLR zoom capacity is described in term of mm instead of x like 4x, 8x etc. What is the difference? How can we convert mm into x.
0
votes
1answer
146 views

Compare magnification of point and shoot cameras with dSLR telephoto lenses [duplicate]

I just want to know how much magnification there is... if I have a point and shoot camera and it has 10X zoom, I'm seeing that the subject is "brought" 10x closer. So, what does a dSLR telephoto lens ...
0
votes
0answers
81 views

How to calculate the zoom power (X factor) for a lens? [duplicate]

Possible Duplicate: How do I convert lens mm to optical zoom times? How can I obtain the "X factor" for a lens? I thought that to get the "X factor" I had to divide the largest focal ...
46
votes
5answers
10k views

What is “angle of view” in photography?

I read on the Lens Buying Guide @ neocamera: Focal-length determines the angle-of-view seen through a lens for a given sensor-size. With a full-frame sensor a lens gives the same angle-of-view ...
8
votes
4answers
5k views

What does 'how much zoom' mean?

I have Canon 18-135 and 70-300 zoom lenses. People ask me how much zoom my camera supports. What am I supposed to tell them? "135 ÷ 18 = 7.5" and "300 ÷ 70 = 4.2"?
20
votes
4answers
3k views

What is focal length and how does it affect my photos?

What is focal-length? Are focal-length and zoom synonymous? How does the focal length of a photo affect it?
13
votes
5answers
1k views

Why do we talk about focal-length when frame sizes are different?

I keep seeing people talking about focal-length of lenses without saying how large the frame is. Is there a more sensible way to talk about how much a lens “zooms”? (I have seen so many adverts ...
8
votes
9answers
1k views

How do I choose a point and shoot camera under $400?

I need a P&S camera for my family. They would probably use it for family functions,trips etc. I want a camera with flash for taking good night photos with a decent quality. They are not ...
0
votes
2answers
2k views

What level of zoom lens comes with a new Canon EOS 1100D?

I am a complete newbie to DSLRs. I am planning on buying a Canon EOS 1100D SLR with Kit (EF S18-55 IS II). (It's also known as the Canon Rebel T3.) I have a 10x optical zoom in my Point and Shoot ...
1
vote
2answers
263 views

Why don't DSLR camera specifications include a zoom ratio (e.g. 3x zoom) like compact cameras?

For example, there is no mention of the zoom here. I'm guessing that it's specified in some other specification. If so, what do I look at and how do I compute the zoom from it? I've looked at a few ...

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