Questions tagged [zoom]

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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17
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10answers
3k views

Is replacing all my Fujifilm gear with this Canon zoom lens an upgrade?

I'm a hobby photographer. I like taking portraits, which I often do at festivals and conventions. I usually take the following gear: Fujifilm X-T2 (an APS-C sensor mirrorless camera), a 16-55mm f/2.8 (...
3
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3answers
859 views

Why can't my compact digital camera focus when applying 8x zoom?

I have a compact digital camera which is Canon IXUS 165. The specification is in this link. I bought it in June 2016. It has 8x Optical Zoom. Just now I was zooming 8x on something, and when I tried ...
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2answers
144 views

Should we zoom or not zoom while taking night sky photo [closed]

I was trying to capture Northern lights during my recent trip to Iceland, although i couldn't capture them well but i was left wondering if i should zoom towards night sky while clicking photos or not ...
2
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2answers
623 views

My Tamron 100-400mm f/4.5-6.3 jumps to f/6.7 beyond 360mm

I got a brand new lens today: a Tamron 100-400mm F/4.5-6.3 Di VC USD. I have mounted it on my Nikon D80. This lens seems to have a problem with its aperture: At 100mm, I can operate from f/4.5 ...
0
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3answers
1k views

Upgrading to Nikon 18-300 zoom

I've got two lenses for my Nikon DSLR (the D5100) - the 18-55 zoom it came with, and a 55-300 f4.5-5.6 zoom that I really enjoy for wildlife. The problem I'm running into, is that I often find my ...
0
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3answers
2k views

Is Tamron AF 70-300mm F/4-5.6 Di LD better than Nikon AF-S DX Nikkor 55-300 mm 1:4,5-5,6G ED VR?

I am new to photography. I got a chance to test both the lenses (Tamron AF 70-300mm F/4-5.6 Di LD and Nikon AF-S DX Nikkor 55-300 mm 1:4,5-5,6G ED VR). The Nikon lens has VR and hence with full zoom, ...
2
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1answer
406 views

How to enlarge an object by x-times with an optical zoom

My camera employs a 30x optical zoom, with focal length ('f' from here on out): f = 4.3 mm to 129 mm. If I am at 1x and I see an object as 100 pixels, to enlarge it to 150 pixels, can I set the zoom ...
49
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3answers
11k views

Why do photo cameras lose focus when you zoom, when movie or TV cameras keep it?

In photo cameras, i.e. (D)SLRs, digital cameras, etc., when you focus on an object and then you zoom (in or out), the object gets out of focus. On the other hand, in movie or TV cameras, the focus is ...
-2
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1answer
206 views

Universal solution for wide focus length DSLR camera in 2017

Please help me to find the right solution for my needs. I'm looking for a high quality camera, it should be modern, capable to record high-quality videos in FullHD (4K not needed at all). In the ...
0
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1answer
165 views

Is an inexpensive used Pentax lens worth buying for mounting on a Canon Rebel T5i? [duplicate]

I have found an smc Pentax-A 25-135mm f/4 at a local thrift, for $60. Everything seems to be working great, and it's without scratches. Is this a great deal, or not so much? Is this a good lens? I ...
0
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3answers
110 views

Zoom or Approaching [duplicate]

I know that capturing a near object and capturing the same object with going apart with zoom makes a lot of sense But I'm confused what change does it do to the picture?? Could anyone help me in this?...
0
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1answer
321 views

Logan Paul camera?

Ok in today's vlog thats 23 August from India , He had posted a vlog about capturing Eclipse . Where he purchased a 14k dollars worth lens. But the lens didn't work with his camera ??? Why did ...
-2
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3answers
811 views

First full frame with Canon 24-105 f4 kit or 70-200 f2.8

I am interested in wedding photography. I currently have a 50mm f1.8 lens. I am going to purchase my first full-frame camera soon. I can only afford one lens right now, so I need to decide between ...
3
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3answers
269 views

How do I choose a lens for my first DSLR to replicate the capabilities of my bridge camera?

I am planning to migrate from my Sony DSC-HX1 bridge camera (28-560mm) to Canon EOS 800D. Now I had learned that 'x' based zoom values are not applicable to DSLR's and I am lost with all the ...
2
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1answer
552 views

Why is my Nikon 18-300 lens not focusing at higher focal lengths?

I found a similar question about the 18-200. Someone suggested screwing the front element tighter. Is it possible to do the same with the 18-300? My problem happens at 200-300mm. I am not sure how to ...
12
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11answers
4k views

How should I approach deer to photograph them?

I currently live in suburbia and there's a large field behind my house. Since yesterday I've noticed 3-4 deer grazing there. I've approached them three times at varying times of day and haven't been ...
0
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5answers
522 views

How does optical and digital zoom relate to the “W” and “T” zoom controls on my camera?

If W means "Wide Angle" and T means "Telephoto", then how does optical and digital zoom relate? Does W and T fulfill both zooming options?
5
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5answers
4k views

Is it exactly true that doubling the focal length makes everything look twice as big?

I had come to the conclusion that if one lens has twice the focal length of another, that means it makes everything look twice as big. Conversely, if a lens has half the focal length, you see twice as ...
11
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5answers
2k views

How much zoom would make a camera suitable for imaging railcar seals from 100 feet away?

I'm an engineer, and we have a need to take pictures of railcar seals (steel ties as pictured) from on top of the building. What I need is a camera with sufficient zoom so we can clearly see whether ...
0
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2answers
1k views

Which is the better lens: Canon 28-80 USM I, 28-70 f/3.5-4.5 II or 28-105 f/3.5-4.5 II?

I own a Canon 6D and I need a general purpose zoom but I can't afford to buy an L lens, even an used one. I've read here about 28-80 USM I and 28-70 f/3.5-4.5 II. The author claims that those lenses ...
4
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1answer
2k views

30x Optical Zoom vs. 30x Magnification on Binoculars? [duplicate]

I just recently learned that 30x Optical Zoom on a Camera and 30x Magnification on Binoculars are different things. Suppose if I have got 30x50 Binoculars, then what would be its equivalent number of ...
1
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3answers
834 views

Is there an EASY way to get geotagging with a compact camera without GPS?

Is there a compact camera with decent zoom (30x) with which it would be easy to have the photos geotagged? What is the best practice to have both good picture quality (use a compact camera, not ...
0
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3answers
435 views

Which telephoto lens to choose? [closed]

I have a Canon EOS 50D and 3 lenses: Canon EF-S 18-135mm f/3.5-5.6 IS Tamron SP AF 90mm F/2.8 Di Macro Canon EF-S 10-22mm f/3.5-4.5 USM I want a telephoto lens to take pics of small animals in ...
0
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3answers
87 views

Canon 18 - 55 IS STM lens noisey

I've recently brought a brand new canon lens from a website and when I record videos and use the zoom, you can really hear it during playback? Is this normal? Here's a link to a video I've recorded: ...
1
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2answers
221 views

What are the technical limitations that prevent lens manufacturers from producing 70-300mm f2.8?

70-300 f2.8 lenses don't seem to exist. What are the reasons behind that?
9
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5answers
9k views

Can I convert binocular zoom to equivalent lens focal length?

I read another SE post that shows how focal lengths can be converted to optical magnification, but it isn't clear to me how it would work the other way around. My binoculars are adjustable from x10 to ...
0
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2answers
2k views

Does Zooming the lens Changes the Aperture? [duplicate]

Hello Photographic Lovers, Aperture is what the power of lens to open and close so as to control the light. So When we Zoom in the lens and see the far objects, then it changes the aperture. So ...
4
votes
1answer
411 views

Will primes become rarer in the 24-70mm range for DSLRs like they did for the 70-200mm?

The trinity 14-24mm, 24-70mm and 70-200mm zooms are lens that professionals rely upon for the convenience of a zoom but a good quality similar to a prime. A lot of development has gone into these as ...
2
votes
1answer
526 views

How is the continuous (optical) zoom feature realised in the new iPhone 7 using two lenses

The new iPhone 7 Plus has a dual camera system with one 28mm and one 56mm. Usually in smartphones where the camera is compact, you do not have real optical zoom. So how is the zoom feature, which ...
1
vote
1answer
518 views

Zoom, Aperture size and focal length [duplicate]

I am very new to photography and have been working my way through a few books and magazines trying to learn how to use my camera more effectively. I keep getting stuck on the differences between the ...
3
votes
1answer
534 views

Is there any rhyme or reason to the order of zoom and focus rings on lenses?

I have 3 zoom lenses, 2 Nikkors & a Tamron. AF-S NIKKOR 24-120mm f/4G ED VR AF-P DX NIKKOR 18-55mm f/3.5-5.6G VR [the kit lens] Tamron AF 70-300mm F/4-5.6 Di LD MACRO 1:2 All except the 24-...
2
votes
3answers
585 views

How is a dual camera smartphone “12x zoom” when one is prime and the other has a 2.3x zoom?

In an article about a new (dual camera) smartphone the following is stated: Asus ZenFone 3 Zoom sports a dual rear camera setup, with one 12-megapixel rear camera with Sony IMX362 sensor, and f/1.7 ...
3
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6answers
1k views

Longer Zoom Lens

I have D5000 Nikon and am looking for a longer zoom to take pictures of wildlife (live in Montana Rockies). I also have a Canon Powershot with 40x zoom - and the lens I have for my Nikon has a ...
1
vote
3answers
219 views

How to focus on more objects at the same time while maintaining shallow DOF?

How can I focus on more objects, say three dogs sitting in front of you, while maintaining a nice background blur/shallow DOF? I have a kit lens ranging from 18-55mm with a variable aperture of f/3.5-...
0
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3answers
777 views

Which has more zoom: a Nikon p520 or a 55-200 mm lens?

Which has greater zooming distance, the Nikon Coolpix P520 or a 55-200mm VR2 lens?
0
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3answers
1k views

How can I find a compact camera where I can change the lens?

I would like to purchase a compact camera. But usually they are limited in optical zooming. So, I would like, if possible, to add/replace lens hardware with a different lens with better optical ...
0
votes
1answer
155 views

Can I optically zoom in but still capture the content seen when zoomed out?

I have a general question regarding optical zooming. By taking an optically zoomed picture, the result is essentially a fixed-size picture that cuts off the surroundings in order to zoom in on a ...
2
votes
3answers
994 views

My lens doesn't have a zoom lock; does walking around with the lens fully extended damage it in any way?

About 6 months ago I purchased a Sigma 170-500mm F5-6.3 APO DG lens, my first super telephoto lens to get me started. The lens is quite old and doesn't have a lock switch to disable zooming (the lens ...
3
votes
3answers
2k views

Why do some telephoto zoom lenses physically extend while others don't?

The kit lens that came with my canon is an 18-135mm lens, but I hardly ever use it because I prefer my prime lens (I know a lot more about prime lenses than zoom lenses). One of my friends has a 24-...
0
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4answers
249 views

Why does lower focal length magnifies objects better comparing to other camera? [duplicate]

I have a newbie question about focal length, what it actually means for lenses and how I can translate this into "how close to the target it's going to practically take me" (I don't want to use the ...
10
votes
11answers
10k views

How to photograph distant objects (10km)?

How to photograph distant objects like man and cars, with resolutions enough to identify face and car numbers? I'm looking for suggestions and cost, 10km range, with good sun light. Thanks. Please ...
6
votes
4answers
292 views

Why don't cameras ordinarily zoom by moving the whole lens as a unit?

Zoom lenses have a moving group of lenses within the whole unit. It seems to me that any lens could easily be made into a zoom lens by moving the whole lens unit towards/away from the film/sensor. ...
7
votes
5answers
3k views

Any tricks to escape the zoom lens trap?

I have been taking pictures for several years now and slowly improving at that. My camera is Olympus Stylus 1 with the 28-300mm f/2.8 super zoom lens. I like travelling and feel the camera is a great ...
1
vote
3answers
6k views

Zooming in meters [duplicate]

I'm new to photographing. But I'd like to know what 10x zoom means in meters. I know that it means the picture is enlarged 10 times, but what does it mean in meters? I mean does it mean like the ...
2
votes
3answers
303 views

From a user perspective, is a stopped down variable aperture zoom lens equivalent to a constant aperture zoom lens?

Let's say that I have a 24-70 F3.5-4.8 variable aperture zoom lens. If I were to stop down that lens to 4.8, would it then be equivalent to a 24-70 F4.8 constant aperture zoom lens from a user ...
3
votes
3answers
2k views

More megapixels to compensate for small zoom (Or: How good is Sony's Smart Zoom?)

Short version of my question: How can I compare cameras with different optical zooms and different megapixels (more megapixels can allow cropping for a fake zoom effect) in order to tell which camera ...
5
votes
1answer
1k views

Why do zooms have small apertures even around 50mm?

A 50mm f/1.8 prime from one of the major manufacturers can easily be found for $200 or less, but zooms that include 50mm in their range always seem to have much smaller apertures even at 50mm until ...
0
votes
2answers
643 views

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

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 ...
24
votes
4answers
5k 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
180 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 wild....

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