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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
votes
2answers
502 views

Is a small amount of play on the Fujifilm X-E1 mount normal?

I have a brand new Fuji X-E1 with the 18-55 zoom. The lens has the barest amount of play once mounted, rotating back and forth less than a half millimeter if I twist it firmly. I've had old Nikon film ...
8
votes
7answers
9k views

How do I get the best results for sports with a 70-200mm f/2.8?

Can anyone help? I am using a nikon d7000 for sports photography. My husband kindly bought me a sigma 70-200mm telephoto lens 2.8 as I shoot a lot of low light indoor sports. I have only just started ...
0
votes
2answers
7k views

Best all round zoom lens for D3100?

New to DSLR photography and would like some advice. What would be a good all round lens for the Nikon D3100? I have got the 18-55 one from the kit, any recommendations? Also are there any other items ...
11
votes
4answers
2k 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 ...
1
vote
1answer
362 views

Nikon AF 70-300 mm lens zoom broken, can it be salvaged?

So I accidentally dropped my Nikkor AF 70-300 mm lens on the floor (yes, stupid). Now the zoom ring does not work. When I turn it, nothing happens. However, I can slide the lens back and forth, and ...
9
votes
4answers
981 views

Is it the same if you take a picture by setting 50mm in a 18-55mm lens and by using a 50mm prime lens?

Is it the same if you take a picture setting 50mm with a 18-55mm lens and a 50mm f/1.8 prime lens? Assuming that ISO, aperture, and shutter speed are the same, will both the lens give same results? I ...
3
votes
2answers
486 views

Canon Rebel T3 wont take the picture I want [duplicate]

I'm new to the camera and photography so I am sorry in advance... With both lenses the camera came with (18-55 and 75-300) if I use the camera's magnifier or the lenses zoom for close up pics from ...
4
votes
1answer
170 views

Do elements drift out of place with age in zoom lenses?

I have used a Nikon 18-200 for several years and probably have 30K or so photos taken with the lens. It appears that over time the lens is less consistent in the sharpness of the lens. I have heard ...
1
vote
2answers
704 views

Why are my pictures noisy when zoomed at 1:1 in Lightroom 4?

I am shooting with Nikon D7000 and 18-105mm lens and RAW only not (RAW+JPEG). When I import my pics in Lightroom 4 and zoom it at 1:1 both in Library and develop modules I see a lot of noise, though ...
2
votes
2answers
544 views

Is trading Canon 18-135mm + 24mm lenses for a 17-40mm L or 70-200mm f/4 L a good decision?

I currently have a Canon 60D with an 18-135 lens and a 24 mm f/2.8 lens I hardly use. I really fancy the 24-105L IS (colour, sharpness, etc) and the 100-400L for the length (Freud would have something ...
4
votes
2answers
352 views

How do you get moon zoomed over foreground? [duplicate]

How does one get a picture similar to the one below with a crop sensor DSLR and using kit lens or 70-300mm lens without post-processing?
0
votes
2answers
3k 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 ...
0
votes
3answers
2k views

Why don't the zoom buttons work on my DSLR?

I am a newbie to the new camera I just bought. It is a Nikon D5200 it has the original lens that came on the camera a 18-55 lens on it. My question is when I turn the lens to the 55 and then push the ...
0
votes
0answers
50 views

Why does the zoom on my Canon T3i not work? [duplicate]

I have a new Canon T3i and was able to take and capture zoomed in photos with the lens that came with the camera(EF-S 18-55mm) as well as a Canon Zoom Lens EF 75-300mm 1:4-5.6. Now when I zoom in ...
6
votes
4answers
9k 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 ...
0
votes
1answer
103 views

How does the image quality compare between these lenses? [duplicate]

Want to buy a zoom lens for Nikon D5100 [now only have the kit lens 18-55mm]. I've selected these options AF Zoom-NIKK0R 70-300mm f/4-5.6G Tamron AF 70-300mm F/4-5.6 Di LD Macro Sigma 70-300mm ...
1
vote
1answer
629 views

How to fix a zoom lens that is sticky at a particular focal length?

I have the Canon 18-55mm lens. When I zoom out from 55mm to 18mm, the lens works fine until 22mm, where it seems to be stuck and you must then use a bit more force. I saw in many sites that this is ...
6
votes
5answers
4k 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?
6
votes
1answer
542 views

When focusing at max zoom, focus is lost after zooming out. Is that normal?

On my Canon kit lens, I could completely zoom in, focus on the object and then zoom out to take the picture with the object still in focus. Now I have a Sigma 18-200mm (with a Canon 600D) and that ...
5
votes
1answer
972 views

Do all telephoto zoom lenses backfocus on the wide angle end?

I’ve just gone through a round of testing with two telephoto zooms, on two different cameras, and both appear to have significant back focus issues at the 70mm end. I just had the Nikon 70-200 f/2.8 ...
0
votes
2answers
945 views

How does the Tamron AF 28-75mm f2.8 compare to Canon EF-S 15-85mm f/3.5-5.6 IS USM?

I am looking to buy a good walk around lens for t3i to finally upgrade from my kit lens. My current preference is Canon 15-85. however I am wondering if I should get Tamron AF 28-75mm f2.8. I am ...
2
votes
2answers
2k views

What is the best Canon Telephoto Zoom Lens for $600-650?

I intend to expand my lens arsenal for my Canon 650D. Already have the kit lens 18-55mm and the UWA Tokina 11-16mm 2.8. My next objective is to get a telephoto zoom lens in the range $600-650. ...
4
votes
3answers
555 views

Are modern telephoto zooms so improved that they're not a big tradeoff vs primes? [duplicate]

I am looking for a good amateur telephoto lens for Nikon DSLR. It's main purpose will be sport shots. Back when I learned photography with film SLR, a fixed focal lens was significantly better than a ...
9
votes
4answers
546 views

Why are some zoom lenses “soft” at either end of the focal length range?

As one reads about zoom lenses, a relatively common comment that comes up in reviews of some lenses (especially lower-priced lenses) is that the lens is not as sharp ("soft") at one or both ends of ...
4
votes
1answer
225 views

Is it normal for the zoom to be loose on a Sony 18-250 lens?

I have the Sony 18-250mm lens. The lens is so loose that it doesn't keep a focal length, but slides down to the fullest extension with minimal downward slope. Is this standard or should I see a ...
5
votes
3answers
638 views

What differentiates a Canon standard zoom from an ultra-wide angle zoom?

I was checking the Canon website and found that the EF-S 15-85mm f/3.5-5.6 IS USM lens is a "standard" zoom lens, whereas the EF 17-40mm f/4L USM is described as an "ultra-wide" Zoom. Is there ...
3
votes
1answer
308 views

Can anyone show me an example of Zoom Creep on Nikkor lenses?

Looking for some pictures which certainly demonstrating this problem on Nikkor lenses. I am about to purchase the lens and want to be able to distinguish.
5
votes
2answers
1k views

Can't auto-focus at full zoom

I have a Canon 1000d, and the standard lens EF-S 18-55mm. Recently I was out taking photos and I've noticed that if I zoom in fully, the lens can't auto focus. I can still take shots using manual ...
0
votes
4answers
6k 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. ...
-1
votes
2answers
315 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.
2
votes
2answers
457 views

Why is depth of field minimised at the max focal length of a zoom lens?

I am using Nikon D7000 with 18-105. I have read people saying to get images with the minimum depth of field, the lens should be at its maximumum focal length, in this case at 105mm. However at 105mm ...
3
votes
4answers
2k views

Canon 24-105 vs 70-200 within the same range

I'm interested about shooting within the ~70-100mm range. I found out on google shop that these two lenses are priced $750[24-105mm, new] and $550 [70-200mm, new], respectively. Which one do you ...
2
votes
2answers
231 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
3answers
456 views

How to get focal length from a camera specification which gives a value like “4.5-22.5”?

I am using a Sony W520 camera. The specifications mention Focal Length (f= mm) 4.5-22.5. What number should I take? The lower value or the higher? And if not both of them, then how to calculate actual ...
11
votes
2answers
6k views

What is the meaning of W and T on a camera's zoom buttons?

On every conventional digital camera (excluding the models with detachable lenses), there are buttons to zoom in and out with W side and T side. When you press W, the lens zooms out. The lens zooms ...
2
votes
1answer
271 views

Is the zoom (18-55mm) of my Nikon D3000 broken?

I've been having troubles with the zoom of the camera. I can only set the level from 18 to 24 when I used to be able to choose what ever value I wanted (between 18 and 55mm of course!!). The 'zoom ...
6
votes
1answer
297 views

How many moving elements in a Canon A490?

I got mugged a few days ago, but got my camera back in the end. Bonus: I got some sand too. I now have the camera in pieces, cleaning them as I go along, and the lens barrel extends and retracts ...
4
votes
2answers
1k views

Why does calculated distance of an object in an image vary when zooming?

I would like to calculate the distance of an object from my camera, so i used the formula given in this question and I got a very good answer, but I've found that when I zoom and take the picture and ...
2
votes
1answer
295 views

Is it normal for the Fujifilm HS25 to have high resistance to zoom?

I bought the 35mm "dslr emulator" on a trial basis. Attracted to hand-zoom lens as motorized zoom is the "weak link" (in terms of camera mean time between failure) on motorized non-dslrs (where entire ...
1
vote
1answer
139 views

Macro mode: Should I make sure the lens is all zoomed out?

It appears that on most compact digital cameras, the macro mode (flower symbol) works best (or only) when the zoom lens is at the widest setting (comparable to e.g. 35 mm). What is the reason? ...
3
votes
2answers
5k 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 ...
5
votes
1answer
2k views

Should my flash zoom match my lens focal length or its 35mm equivalent?

I have a camera with an APS-C sized sensor. Should my flash zoom match my lens's actual focal length or its 35mm equivalent? I am hoping that someone can shed some scientific light to this matter.
10
votes
5answers
1k 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 ...
4
votes
1answer
965 views

24mm f2.8 vs 24-85 f3.5-f4.5 (Nikon)

I have a 17-50 f2.8 zoom (Tamron) and while it performs admirably, it is heavy. So I was thinking of a 24mm f2.8 prime, when I also read up on the 24-85 f3.5-4.5 (non-VR) AFS lens. Here's the ...
3
votes
1answer
381 views

What do I need in order to mount my zoom lens onto a tripod?

I just purchased a cheap Opteka zoom lens and it is super long -- over two feet when fully elongated. It has built-in a tripod mount and I have no idea how to use it. I currently own a Vanguard ...
1
vote
1answer
567 views

What is cheapest way to get a 10-20× zoom range on a Nikon D5100? [duplicate]

Possible Duplicate: How do I decide on a camera/lens with high zoom range? There are a lot of relatively cheap ~ 300$ (with body) consumer cameras with mega-zoom features — i.e. lenses with ...
10
votes
2answers
471 views

Max aperture on zoom lenses - stepwise or linear?

When zooming with lenses without a fixed max aperture, the change in aperture* that the camera displays is stepwise, usually in steps of thirds. But, is the max aperture really the same all the way as ...
20
votes
4answers
4k 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?
2
votes
2answers
4k views

What are the differences between the Canon EF 70-200mm f/2.8L IS II USM lens and the one that isn't IS II?

On Amazon, the Canon EF 70-200mm f/2.8L IS II USM Telephoto Zoom Lens for Canon SLR Cameras is $2500 whereas the Canon EF 70-200mm f/2.8L USM Telephoto Zoom Lens for Canon SLR Cameras is a mere $1400. ...
5
votes
5answers
5k views

Canon EF-S 15-85mm IS USM or Canon EF-S 18-135mm IS to replace a broken kit lens?

I'm looking to upgrade the 18-55 kit lens I got with my 450D. I finally settled choosing between these two. Which one would you get and why? I do mostly amateur photography on my spare time, trips ...