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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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3answers
97 views

What are all the types of lenses? [closed]

I see different types of lens in the market like prime, zoom, telephoto and macro. I'm not sure how many such types really exists and the functions/features of each. Can someone share an explanation ...
0
votes
0answers
33 views

prime vs zoom lens with same aperture [duplicate]

I was wondering why we need wide angle prime lenses for landscape photography. I have a 18-140mm lens. When I am shooting landscapes I am at f/16, so why would I need a prime lenses like a 24mm f/1.8 ...
2
votes
5answers
981 views

What is the difference between zooming in and cropping?

If I take a photo by zooming in (optical) and cropping a photo without zoom. What would be the difference between the two? I know cropping reduces the photo quality but I'm interested in other ...
0
votes
2answers
100 views

What can I expect when shooting the moon with a 55-200mm zoom lens w/ 2X teleconverter?

I am planning to buy a 2X teleconverter for my Nikon 55–200 mm AF-S f/4–5.5 to capture the moon and other planets. (After connecting the 2X teleconverter the lens will become 110–400 mm and f/8–11) ...
2
votes
3answers
154 views

Is it possible to make a photo of a plane at cruise altitude with this zoom?

I came along to this photo of a plane flying at cruise altitude. I was really surprised by the level of detail and zoom this photo has. You can even see the tail number of the plane! Is it really ...
0
votes
2answers
117 views

zoom or aperture which one decreases DoF?

When I want to decrease my DoF and have Bokeh in my photos, I always stuck between choosing either opening the aperture or zooming. Should I start zooming or should I decrease the aperture? Edit: ...
0
votes
4answers
98 views

Zoom conversion help? Superzoom vs Nikon 55-300 DX lens

I am going on a road trip over this summer and I'd like something that can handle being zoomed in a lot. I have a very capable Nikon D5200, and a 55-300mm telephoto lens that goes with it. However, ...
0
votes
0answers
26 views

SIgma 70 - 300 APO DG Macro Lens Zoom doesn't working after 270

My new Sigma 70 - 300 APO DG Macro lens zoom ring is not working after 270mm. In this situation what can I do? N.B: No external pressure is not given.
0
votes
1answer
27 views

How to change zoom on TRIOPO TR950 Speedlite

I recently bought a Triopo TR950 speedlite from AliExpress which works great as a manual flash but I have one problem, I can't find any way to adjust the zoom on the camera. It has the zoom indicated ...
-2
votes
2answers
61 views

Tips for using movie mode on DSLR [closed]

I've got a Nikon D5100 and while it takes pretty decent pictures, I have had nothing but trouble trying to use its "movie mode". This main issue I see is that movie mode only works in "Live Preview" ...
0
votes
0answers
44 views

When calculating subject size, how do I adjust for zoom with an aerial camera at known altitude? [duplicate]

I am currently doing a project on aerial camera-video surveillance. The camera is mounted on a drone, and I need to count the number of heads in an image. The head size varies with the altitude of the ...
0
votes
1answer
53 views

How to disable Fujifilm Finepix S8XXX series zoom sound [closed]

I notice that Fujifilm Finepix S8XXX series have very noisy zoom sound. This can be heard when recording a video and optical-zooming at the same time. Please refer to this video to know more about ...
2
votes
1answer
675 views

What can cause massive overexposure on a Canon IXUS when zooming in?

I have been using Canon IXUS 130 for some years and it has been giving decent good photos and videos. Strangely, few days ago, whenever I use the telephoto zoom and take a picture, the picture is ...
44
votes
7answers
184k views

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
votes
1answer
148 views

Does a lens exist that is parfocal, has a linear zoom throw, and is affordable?

I'm working on a project to create, essentially, a servo-powered zoom lens, using a (D)SLR zoom, a zoom ring gear, and a stepper motor. After mounting the zoom ring gear, I'll attach a pinion gear to ...
12
votes
3answers
1k views

How do zoom lenses restrict their widest aperture at the telephoto end?

Does the aperture ring lock the apertures beyond, say 5.6 at length lens's telephoto end? Does the lens introduce an obstacle to the aperture ring so the lens can't be opened anymore beyond the ...
34
votes
5answers
7k views

How do constant aperture zoom lenses work?

Cheaper zoom lenses usually are faster at the wide end and slower at the long end (for example, the $150 Canon EF-S 18-55mm f/3.5-5.6). More expensive constant-aperture zoom lenses have the same ...
5
votes
6answers
5k views

Between Nikon 18-55mm II and 50mm f/1.8, which suits my needs better?

I am an absolute beginner in serious photography. I'm a position to get a Nikon D70 body for $100 or so. I've been researching lenses and I'm debating if I should get the one that originally came ...
3
votes
2answers
147 views

Blurry without zoom, sharp with zoom

I have Nikon Coolpix S5100. I've noticed that my photos are blurry when I'm NOT using zoom, while they are pretty sharp WITH zoom. It doesn't matter whether I shoot from the hand or from the solid ...
6
votes
4answers
3k views

Why is my lens only somewhat sharp near the center and very blurry on the edges?

I bought a canon 50-250mm IS lens (for my T1i), maybe two years ago and haven't used it much, but whenever I do, I always regret using it. Pictures are blurry, the depth of field too shallow and so ...
4
votes
4answers
696 views

Why do two zoom lenses set to 200mm on the same camera produce different fields of view?

I've been testing out a Nikon 18-200mm F3.5-5.6 against a Nikon 55-300mm F4.5-5.6 I took two pictures of a door knob from an equal distance of about 3 meters away with the same Nikon d7100 DX camera ...
12
votes
10answers
3k views

Do photographers avoid using zoom?

Because most lenses do no have a fixed aperture, do most photographers avoid using zoom as to avoid messing up their settings and their established exposure?
1
vote
5answers
3k views

Why image at 400mm is LARGER THAN DOUBLE of image at 200mm? (according to lens formula)

Like most of us, I thought it was yes. Until I really look into the Lens Equation: (1/subject distance) + (1/image distance) = (1/focal length) ...
3
votes
4answers
979 views

Should a Nikon 18-55 lens zoom automatically?

I have purchased a Nikon D5000 camera with 18-55 from eBay. The lens focuses automatically, but should the lens also zoom automatically or is this controlled manually by the zoom ring.
15
votes
7answers
46k views

What is the difference between a telephoto lens and a zoom lens?

Looking at the product page for Nikon lenses, I notice a distinction between telephoto lens and zoom lens. What is the difference between the two? Why would I want one over the other? I wiki'd ...
15
votes
4answers
26k views

What's the advantage of buying a fixed 50mm f/1.8 lens when my camera has an 18-55mm zoom lens?

I've got a Nikon D3100 with an 18-55mm zoom lens. I'm keen to experiment with some other lenses and a friend of mine recently reccommended I purchase a fixed 50mm f/1.8 lens as he said it's good for ...
2
votes
1answer
116 views

Possible to lock focal length on zoom lens? (SELP1650)

(This could turn out to be a bone, practical, product-specific query, but this is the internet so the worst that could happen is a 0 rather than a 1.) Anyhoo: is it possible to lock a zoomable lens ...
1
vote
4answers
7k views

24-105 f4 vs 24-70 f2.8

I am looking for a secondary zoom lens for my Fashion Shoots. I'll be using the 50mm 1.4 as my primary go-to lens and the zoom for everything else. I was wondering which of those lenses perform better ...
11
votes
2answers
10k 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 ...
9
votes
7answers
704 views

Should I postpone buying a zoom lens until I've learned to zoom with my feet?

After several years of shooting with my point-and-shoot, I upgraded to an NEX-5R, with two prime lenses — a 35mm f/1.8 and a 19mm f/2.8. I don't have a zoom lens, not even the kit lens. I've been ...
0
votes
0answers
39 views

camera and lens for bird photos [duplicate]

I like to go birding. Instead of using binoculars solely and trying to remember the markings to later ID the bird, I would like a camera and lens which would allow me to take crisp photos from quite a ...
0
votes
1answer
325 views

How do the Sigma 35mm and 50mm Art primes compare to the Tamron 24-70 f/2.8? [closed]

I shoot people portraits, couple engagement sessions and children (specially my own 1.5 years old). Locations are 70% outdoor green parks or urban settings, 25% indoor in my home and just 5% scenic ...
0
votes
1answer
185 views

How does a Panasonic Lumix FZ1000 compare with a Canon EOS 1000D? [duplicate]

I have the chance to get a Panasonic Lumix FZ1000 (as a gift from my employer, of my choice), how does this compare with the camera I have, a Canon EOS 1000D ? My Canon works perfectly well, but is ...
2
votes
2answers
255 views

Panasonic Lumix FZ1000 - How does it compare to binocular magnification?

I know almost nothing about photography. But I am interested in learning. My dad just purchased a Panasonic Lumix FZ1000. I own a pair of Leica 10x50 binoculars. I asked him how the maximum zoom or ...
14
votes
5answers
5k views

Why are push/pull zooms relatively rare?

The Canon EF 100-400mm f/4.5-5.6 L IS USM has a push/pull zoom mechanism instead of a zoom ring. Other lenses, like the Nikon 80-200mm f/2.8 AF that was released in 1988, use this type of zoom too, ...
2
votes
3answers
323 views

Is the Canon 70-200mm or 24-70mm better for convention photos? [closed]

I've decided I want to upgrade to a better lens, but I'm really torn between the Canon EF 70-200mm f/2.8L IS II USM and the EF 24-70mm f/2.8L II USM. I like to take convention photos, where space is ...
1
vote
1answer
71 views

What Nikon lenses are recommended for everyday photos and some macro? [closed]

I'm about to buy a Nikon D5300, and I want to buy 2 objectives. My interest are primarily social photo and some macro, not really interested on telephoto at all. The budget is kind of limited. Right ...
1
vote
1answer
6k views

Nikon 55-300 VR lens vs other Nikon zoom lens

I've Nikon D5100 with 18-55mm kit lens. Had the 55-200mm VR lens but sold it last year. I really enjoyed using the 55-200mm and had no complain. Now I am planning to buy another zoom lens and have ...
5
votes
3answers
1k views

Are prime lenses sharper than normal or telephoto zoom lenses?

Example: The prime lens Nikon 1.4F G is said to be very sharp at F3.5. So, if I compare that with the normal or telephoto zoom lens's F3.5, will the level of sharpness be same? If no, then will the ...
3
votes
1answer
364 views

What is the shot called where it goes from telephoto to wide-angle without a zoom? [closed]

I've seen this effect in movies where where the background behind the subject expands. In the movie "Ever After" when the father dies, they do that effect with the the daughter. It thought I saw a ...
1
vote
5answers
4k views

What are the pros and cons of constant-aperture zoom lenses, for a relative beginner?

I use a Sony NEX-5R, and I bought the Sony 18-105 F4 constant-aperture lens. I'm aware that the constant-aperture F4 gathers more light than, say a F3.5 - 5.6, and it gives you more control over the ...
1
vote
3answers
4k 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 ...
2
votes
2answers
132 views

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 ...
0
votes
2answers
104 views

Can anyone help me identify this lens? Pk 80-200mm autozoom

I have a lens I was going to try to sell on ebay but can't figure out what it is. Doesn't appear to have a manufacturer name. Made in Korea, side has 22 16 11 8 5.6 4.6 PK. Top has 80-200mm cct ...
0
votes
4answers
733 views

What are the differences between the Nikon 55-300mm and Nikon 18-105mm lenses?

I bought a Nikon D5200 and I'm willing to go out of the kit lens. So I stumbled upon two lens that I can afford, but I don't know which one to pick because I'm still a beginner. Can you please tell me ...
4
votes
1answer
302 views

What are the advantages and disadvantages of zoom lenses with a wide range of focal lengths? [duplicate]

Are there some disadvantages of a zoom-lens with wide range focal length compare to a lens with narrow range both having the same max. aperture? For example, if we have two lenses: Sigma 18-55mm f4 ...
1
vote
2answers
2k views

How to fix Canon 17-40mm F4L loose zoom ring?

I bought a used Canon 17-40mm F4L a while ago, and I just noticed it had the Zoom Ring kind of loose and also a lot of my pictures that were taken at the widest were 19mm instead of 17mm
0
votes
1answer
38 views

Can I mod binoculars to connect a T2 adapter (for EOS)?

I'm afraid of breaking my binoculars if I remove the eyepiece. I'm looking for a cheap way to get some zoom for a lower price than a celestial telescope.
0
votes
0answers
46 views

How can I use sigma zoom 100-300mm on my new Nikon D5100? [duplicate]

Is it possible to use a Sigma zoom 100-300mm lens on my new Nikon D5100? I tried fitting it but couldn't. Can you suggest an adaptor or something that I can fit into to use this lens on my Nikon ...
1
vote
5answers
228 views

Are prime lenses sharp across the whole frame while zoom lenses are soft in the corners?

Somebody told me that there is a difference in sharpness between a zoom lens vs. prime lens. A 58-200mm will give sharp focus in the center of the frame but blurry performance at the corners, while ...