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An optical 'zoom' or 'variable focal length' lens is one that has a range of focal lengths at which it can operate. "Digital zoom" is a technology which simulates optical zoom by cropping the image.

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4
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3answers
394 views

What factors to consider in choosing between large sensor and good zoom?

I’m looking for information on what factors to consider in deciding between a camera with a large sensor and low light sensitivity (for example, the Canon S95) and a camera with a good zoom (for ...
2
votes
3answers
333 views

Cameras with the most possible zoom?

Which camera(s)/lens to buy if you want the most extreme possible zoom factor? Some variables for me: Do not need ultimate quality, Do not need video, Do not take photos in darkness, Do not take ...
6
votes
4answers
833 views

Should I get a kit or separate lens for my D7000?

I am set on getting a D7000 and am drooling already to get one. My only hurdle left is to determine whether the kit lens is good or if i should get the body only and put the 300$ difference between ...
5
votes
2answers
1k views

Tethering to Control Zoom on Nikon DSLR

Most Nikon DSLR have a tethered capture option, however I haven't come across any of them that controls the zoom of the DSLR. I guess the zoom is controlled manually by rotating the ring on the lens. ...
12
votes
2answers
4k views

What differences between point and shoot zoom versus DSLR zoom cause the price disparity?

I'm just getting into the world of photography, stepping up from a point-and-shoot. I've just purchased a Nikon D3100 and it should be here in a couple of days. I've done lots of research, but ...
11
votes
4answers
1k views

Is it problematic to mount a Canon EF 100-400mm f/4.5-5.6L lens on Rebel XSi (450D) body?

I have a Canon Rebel XSi (450D) and I'm going on a two week trip to Argentina and Patagonia where I want to try some wildlife photography. I have the kit 55-250 f/4.5-5.6 lens which I like, but I ...
17
votes
4answers
2k views

Fast prime vs. expensive zoom for indoor sports photograhy?

I plan to try shooting my kids' indoor activities (Tae Kwon Do and Figure Skating). I can get pretty close to the action for TKD, and I have access to ice/board level positions for shooting at the ...
6
votes
4answers
8k views

Canon kit with standard EF-S 18-55mm IS or 18-135mm IS?

I'm going to order a new Canon 550d in a kit with a lens. I'm fairly new to SLR photography which means I have not much knowledge about the difference between lenses. There is an offer for a Canon ...
10
votes
5answers
876 views

What are the pros and cons of non-extending zoom lenses?

Apart from the obvious benefit of not changing the center of gravity, what are the technical pros and cons of zoom lenses that do not change "physical length" when changing the focal length? For ...
7
votes
7answers
2k views

Which lenses are best for macro and for birdwatching (both Canon and Nikon)?

Now I have old Sony A100 DSLR + Minolta AF 24-50/4, Minolta AF 50/1.6, Tokina ATX 80-400/4.5-5.6, ... My camera is old. In near future I am going to buy new DSLR. I think it will be Canon or Nikon. I ...
6
votes
5answers
353 views

Alternative/third-party superzoom for Nikon?

I have a Nikon 18-200 VR which I think is great. I often use the 200mm part of it so I'm thinking of an even more extreme superzoom, but I'm not familiar with other lenses than Nikon, but I have been ...
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 ...
2
votes
4answers
251 views

Compact camera with good zoom range and wide angle

I use to have Ricoh Caplio R7, I loved it’s zoon range and wide angle lens. However its lens kept sticking that will have a few weeks to get fixed under the warranty each time. Also it’s zoom ...
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 ...
6
votes
5answers
2k views

Why is my Nikon 18-200 lens not focusing at higher focal lengths?

My Nikon 18-200 lens on a D300 camera will not focus when it is zoomed between 135mm and 200mm. Is there any tips on how to solve this besides handing it in to a photo store?
10
votes
4answers
279 views

What are important considerations when purchasing a zoom lens?

What should I be aware of when buying a zoom lens (other than that it will fit my camera)? What specs should I pay close attention to?
16
votes
6answers
2k views

Which scenarios are better shot with a prime lens versus zoom lens or macro lens?

What scenarios are better shot with a prime lens? A zoom lens? A macro lens?
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
4answers
4k views

How does changing focal length affect depth of field?

I'm curious about how my "area of acceptable focus" changes when the focal length of the lens I'm using changes as I zoom (or switch lenses). In particular, I'd like to know how the front & back ...