Linked Questions
20 questions linked to/from How do zoom, magnification, and focal length relate?
1
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3
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Zooming in meters [duplicate]
I'm new to photographing. But I'd like to know what 10x zoom means in meters. I know that it means the picture is enlarged 10 times, but what does it mean in meters?
I mean does it mean like the ...
- 121
1
vote
5
answers
7k
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How to work out the base "zoom magnification" of a lens? [duplicate]
I've come from 3x Zoom magnification land and am having a hard time adapting to all these complex "mm" systems. I'm thinking about buying some lenses to enhance the range of zoom of my Sony A5000 ...
- 11
2
votes
3
answers
285
views
If the zoom number doesn't tell me magnification, what does? [duplicate]
I've read How do I convert lens focal length (mm) to x-times optical zoom?, and learned that the times-zoom number doesn't tell you much. So, how do you determine the magnification — the amount a lens ...
- 21
2
votes
2
answers
2k
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Difference between using camera's macro mode vs zooming in with a telephoto lens [duplicate]
I'm photography enthusiast, But I'm unaware of the difference between my camera's macro mode vs zooming in with a telephoto zoom lens
What difference does it make when I zoom in with a telephoto lens ...
- 121
0
votes
1
answer
407
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Comparing focal length [duplicate]
Hello I want to move from my compact camera to a dslr. I am fan of landscape photos so I want to buy an ultra-zoom lens. My camera supports 14x optical zoom. I know that for compact cameras it's just ...
- 103
0
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4
answers
266
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Why does lower focal length magnifies objects better comparing to other camera? [duplicate]
I have a newbie question about focal length, what it actually means for lenses and how I can translate this into "how close to the target it's going to practically take me" (I don't want to use the ...
- 43
78
votes
7
answers
472k
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How do I convert lens focal length (mm) to x-times optical zoom?
What is the rule to convert the 'mm' notation to the 'optical zoom' notation? I searched a bit and found this one:
optical zoom = maximum focal length / minimum focal length
For example a 18-55mm ...
- 2,146
37
votes
5
answers
22k
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What is a macro lens?
I've read a few threads on here that mention some elementary descriptions of macro lenses and found some marketing fluff in the box for my Canon about them as well, but being a complete novice I was ...
- 1,152
19
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10
answers
5k
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How can I magnify ≤1mm objects onto a display for under $200?
Question updated/clarified
I'm looking to perform feature identification on small tick/bug/mite-like creatures approximately 0.3mm to 1mm in size. I'd prefer to be able to project magnified images ...
- 307
4
votes
6
answers
121k
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So my iPhone 6 camera lens is as wide as my full frame 35mm DSLR lens?
I am trying to understand what is the deal with "full-frame" and what difference it makes, so did a silly test:
I sat at my bed and aligned the iPhone 6 camera with the door of the room and took a ...
- 902
6
votes
4
answers
8k
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What is the best focal length for using a DSLR to digitize film negatives?
I have 24-85mm zoom lens with Nikon D750. I am planning to use this setting for digitizing my B&W negative film.
What's the preferred focal length to use for this purpose?
People talk about ...
- 1,442
6
votes
6
answers
19k
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What do the mm numbers on lenses mean?
I'm confused about lenses and numbers. Why are some lenses ex. 50mm-300mm Different sizes? Some lenses with the same mm numbers are huge and some are small... What's the difference? Also the prices ...
- 71
3
votes
2
answers
15k
views
Difference between zoom and focal length? [duplicate]
Until now I thought that focal length is just another way of measuring how much a lens zooms: The higher the number the more it magnifies, the smaller the number the wider the angle and thus the less ...
- 1,384
4
votes
9
answers
1k
views
How can I explain focal length to someone who isn't into photography?
Context
So my friends and family are curious about how far my lens can reach. I usually explain with focal length and show them a few pictures.
Question
Is there any easier way to explain what ...
- 2,003
4
votes
4
answers
1k
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What kind of lens to photograph a 1 mm object?
I want to photograph an one mm (or slightly less) object. I have a Canon EOS 80D. What lens should I use, or is there any other way to accomplish this?
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