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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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1answer
382 views

What is behind the mechanical issue with my Canon 70-300 lens? [closed]

Today I've realized my 70-300 zoom does not rotate fully. In fact, it stops just before the 300 sign is reached in the ring. There's some metallic noise inside the lens when I move it, which let me ...
0
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1answer
1k views

What is the EF 28 - 105 mm 1: 3.5-4.5 lens best for?

I've been shooting for about a year now and am slowly acquiring lenses. I just bought two used on craigslist from someone who was getting rid of equipment. Canon EF 28 - 105 mm 1: 3.5-4.5 Canon EF ...
0
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2answers
647 views

How do I choose a telephoto zoom lens? [closed]

I have a Canon 1100D kit (18-55mm IS II) and a 50mm f1.8 lens. Now I'm looking for a zoom lens. What do you think about the following: Tamron 18-200mm f3.5-6.3 Tamron 70-300mm f4-f5.6 DI LD Tamron ...
8
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1answer
1k views

Why does the maximum aperture change with focal length? [duplicate]

Possible Duplicate: Why do zoom lenses and compact cameras have varied maximum aperture across the zoom range? It is rather common with zooms that the maximum aperture changes (in fact, ...
3
votes
2answers
207 views

What should I look for in a second-hand DSLR with a nice long zoom lens?

I am considering buying a cheap second-hand DSLR with a nice long zoom lens (at least up to 200mm) for photographing nature in particular. I have a lovely Panasonic LX5 which takes great macro ...
3
votes
3answers
523 views

Which would be more suitable lens in terms of utility, weight, price: 18-135 or 18-55 + 55-200?

Is it better to invest in one 18-135mm lens or have a standard 18-55mm lens and another 55-250mm lens for occasional need?
5
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2answers
1k views

Is there a Tamron 70-200mm lens which is optically superior to the Canon 70-200 f2.8 IS?

In the June 2011's Popular Photography magazine (Canada, hard copy, pg. 90) in an article titled "Star Power", on a one page overview of the Canon 70-200mm f2.8L IS II USM, the author (Julia Silber) ...
15
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8answers
879 views

Would a prime be redundant with a fast zoom?

Now that I am finally getting a fast zoom (Tamron 17-50mm 2.8) I've been considering a fast prime to go with it, specifically a Sigma 50mm 1.4. Despite its shortcomings, it still does really nice ...
2
votes
1answer
477 views

Which 70-300mm f4-5.6 lens is “better?” [duplicate]

I'm looking for a budget telephoto lens and I'm wondering which of these two is the better option. They have very similar specs: Tamron AF 70-300mm f/4.0-5.6 Di LD Macro Zoom Lens for Canon Digital ...
3
votes
1answer
87 views

Is there a way to digitally zoom a Nikon D-90 recording video in 720p?

While using the Nikon D-90 Live-View mode to record video in 720p, is there a way to pick the pixels from the center of the sensor? In other words, the sensor on the D-90 is way more than 720 lines ...
3
votes
1answer
2k views

How do the Pentax 18-55mm and 18-135mm compare in image quality?

I've been reading a lot about the Pentax DA 18-135mm lens and its performance compared to other lenses. I've heard that this lens is very soft at 135mm regardless of aperture. However, I've also ...
15
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5answers
2k views

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 ...
6
votes
5answers
357 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 ...
10
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4answers
280 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?
6
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2answers
529 views

Are reverse mounts only for use with prime lenses?

Are reverse lens mounts only for use with prime lenses? I was wondering if I could use my zoom lens with a reverse mount.
3
votes
3answers
533 views

How do I choose a zoom lens to replace the kit lens?

I have a Canon 1000D with a 50mm f/1.8. I also have the 18-55mm f/3.5-5.6 kit lens, but I am not very satisfied with its performance. I'm looking for a better zoom lens. I have a budget of around ...
10
votes
6answers
290 views

On smaller prints, will a high-quality zoom lens provide near equal image quality compared to primes?

Let's say I shoot with Canon EF 35mm f/1.4L, Canon EF 50mm f/1.4, and a Canon EF 85mm f/1.8. Can these 3 primes be replaced with a Canon EF 24-70mm f/2.8 for the convenience of not needing to change ...
2
votes
0answers
770 views

Where can I compare telephoto zooms? 200 vs 300 vs 500 mm?

I have a 200mm telephoto zoom lens. I would like to see the zoom distance between the 200mm compared to 300mm and 500mm. Are there any sample comparison images anywhere I can look at?
6
votes
7answers
4k views

How can I visualize or simulate the effect of different focal lengths?

I have seen many camera review sites illustrate the effect of using different focal lengths on the same photograph using frames. There are also similar illustrations to compare different sensors (full ...
1
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3answers
618 views

Recommendations for zoom lenses for an iPhone 3GS

I enjoy taking pictures for fun with my iPhone 3GS, but I've now reached a point where I would like to be able to zoom in a bit on my motives, and I don't like the digital zoom. Now I've seen that it ...
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2answers
3k views

How do I get highly detailed iris photos?

I've found the following two pictures (particularly the first) that have a very high level of detail in the iris: http://www.flickr.com/photos/stockrdb/2848444141/ ...
15
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6answers
580 views

Overlapping vs. Complementary lenses

I'd like to know if anyone has any advice or experience they can share about using a pair of zoom lenses that have overlapping focal lengths; or a pair of zoom lenses that have adjacent focal lengths. ...
6
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4answers
687 views

Is depth of field and bokeh influenced by distance to the subject?

I know that the aperture size has a direct effect on the depth of field. However, what about distance to the subject? Let's say I took two pictures, one at 24mm and one at 70mm, using the same lens ...
4
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3answers
404 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
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3answers
335 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 ...
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. ...
13
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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 ...
16
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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?