Nidelva river through Trondheim Norway

Nidelva river through Trondheim Norway
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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.

learn more… | top users | synonyms

0
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2answers
90 views

Difference between full frame and crop sensors, with regard to zooming

Given two sensors of different sizes, but with an equal number of pixels, and the situation below; are there any differences in the images captured in the bottom two drawings? Since both sensors have ...
20
votes
4answers
3k views

Why buy prime super telephoto lenses instead of zoom super telephoto lenses?

35mm and 50mm primes make perfect sense to me: sharper images, simple operation, and framing can usually be handled by taking a few steps forwards and backwards. I'm struggling to see how one would ...
0
votes
3answers
90 views

I need a recommendation on FX telephoto zoom lenses

These lenses are usually used for sports and wildlife photography but my application is a little different. I am interested in doing ultra high resolution "close up" images of small plants in the ...
-1
votes
2answers
111 views

Is there anything I should be aware of if I'm considering the Nikon AF 70-300mm F4-5.6 ED D lens?

I recently bought the Nikon D5300 and currently have the 18-55mm kit lens. I am worried that with this lens I won't be able to take a variety of good photographs--not only landscapes. So I have been ...
-2
votes
3answers
103 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
3answers
159 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
119 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
109 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
28 views

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

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
32 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 ...
0
votes
2answers
107 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
2answers
63 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
46 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
56 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
167 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 ...
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?
2
votes
1answer
125 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 ...
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 ...
3
votes
2answers
150 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 ...
0
votes
1answer
360 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
198 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 ...
1
vote
1answer
73 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 ...
2
votes
3answers
386 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 ...
3
votes
1answer
366 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 ...
2
votes
2answers
143 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
109 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 ...
4
votes
1answer
333 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 ...
0
votes
4answers
878 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 ...
0
votes
1answer
39 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 ...
0
votes
5answers
462 views

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 ...
1
vote
5answers
236 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 ...
0
votes
1answer
95 views

Upgrading to a better quality camera before a wildlife-focused vacation [duplicate]

I'm sure this has been asked many times before, but anything would be helpful. I'm looking to upgrade from a standard point-and-shoot to a higher quality camera before a safari vacation. I was ...
1
vote
1answer
131 views

Why don't all zoom lenses have variable f-numbers? [duplicate]

As I understand it, the f-number is a ratio between the focal length and the aperture diameter. A zoom lens can change focal length, but shouldn't the maximum aperture be a fixed size? If so, that ...
0
votes
1answer
111 views

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 ...
1
vote
1answer
111 views

Why doesn't the zoom ring on my Vivitar 75-205mm lens turn?

I bought a Vivitar 75-205mm zoom macro lens for Minolta MD yesterday without paying much attention to the seller's details: I bought it as a gift to someone important for me. She only has a 35mm ...
3
votes
1answer
713 views

What difference is there between the 50mm in a zoom lens, a 50mm prime lens, and a 50mm macro?

I would like to know the differences between: 50mm prime lens 50mm in a zoom lens 50mm macro lens
2
votes
3answers
164 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 ...
2
votes
2answers
110 views

Are compact cameras with a zoom lens safe from dust?

The only relevant "dust" references in my holiday camera manual are: Do not store or use the camera in locations that are: ... very humid or extremely dusty and Build up of dust in your ...
9
votes
4answers
2k views

Is it safe to zoom while taking a photo for the effect?

I have clicked some photos by using the trick of zooming in and zooming out with the lens while the shutter is open. All the photos came pretty cool and crazy. I am very happy with the effect, but I ...
2
votes
2answers
265 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 ...
2
votes
3answers
659 views

Lack of sharpness: is it me, or my zoom lens?

I am specifically talking about Nikon 24-70mm f 2.8 lens Here is the picture I took with that: And here is another one I took with my prime lens Nikon 85mm f 1.8 I think this one is sharper and ...
-1
votes
2answers
119 views

How much zoom does a lens need to have before we call it a superzoom lens?

I've read that superzoom lenses have poor image quality, but how much zoom does a lens need to have before we call it a superzoom lens? 3x is certainly not a superzoom, while 10x probably is. ...
6
votes
1answer
459 views

Why doesn't exposure change when changing focal length?

With a Canon 550D camera and a Tamron 18-270 mm zoom lens, I tried to fix shutter time, aperture (f/8.0 to cover all zoom range), and ISO, so the exposure meter read 0.0 with 18 mm focal length and ...
2
votes
4answers
1k views

Why is my Canon 55-250 IS lens blurry at focal ranges beyond 100mm?

I recently purchased a used Canon 55-250mm IS lens and it works nicely at 55mm(even with lower shutter speed, and f/4 aperture), but turns out quite blurry at longer focal lengths, even with a shutter ...
0
votes
1answer
181 views

How to shoot a 220 yard photo with an 18-135mm lens

I recently bought a Canon T4i with the 18-135mm lens. I am interested in shooting some shots of a pair of eagles that are 200 yards behind my house. I am unable to zoom in clearly to make them fill ...
3
votes
3answers
217 views

What criteria to consider to match cameras and lenses for shooting people at parties?

I normally don't like shooting people that much, because I like to experiment with settings, lenses etc. to get a result that I like, so it helps when the subject doesn't move (Mountains and buildings ...
4
votes
2answers
576 views

How durable are zoom lenses?

I've heard that zoom lenses after some intensive usage become "sticky" and difficult to operate. What's the aproximate durability for a zoom lens like a Canon EF-S 18-135, shooting ca. 1000 - 2000 ...