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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3
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1answer
92 views

Darktable: zoom impacts exposure?

I just have observed a strange behavior in Darktable (Fedora 32, darktable-3.2.1-1.fc32.x86_64): when looking at the image with 'fit screen', it is much darker than the 100% view. After saving the ...
19
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10answers
5k views

How can I magnify ≤1mm objects onto a display for under $200?

Question updated/clarified I'm looking to perform feature identification on small tick/bug/mite-like creatures approximately 0.3mm to 1mm in size. I'd prefer to be able to project magnified images ...
1
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2answers
97 views

Cause of bokeh with dark ring and bright center

This is a detail from a photo that I took with a Fujifilm XF55-200mm lens. The lens was zoomed all the way to 200mm, and the aperture was wide open—f4.8. I wonder whether somebody knows the cause of ...
4
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3answers
220 views

low element count primes render better than high element count zooms? Which image is which?

I was told that prime lenses with low element counts have the potential to produce better colors and greater contrast than lenses with many many elements inside. I was told primes mostly 'render' ...
0
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2answers
84 views

Zoom lenses for wildlife at 600 meters

I spend alot of time driving back roads for work I just got a rebel 7 and I'm trying to find a lense for taking picture of bears and other animals from about 600 meters and have a fairly close up ...
2
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5answers
236 views

Can digital zoom affect focus

I was always under the impression that digital zoom has little use since the same thing can be achieved on a computer afterwards by cropping. I recently purchased a point & shoot digital camera ...
5
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2answers
376 views

Should I crop photos from a prime instead of using a zoom lens?

I wonder whether using a compact, bright, fixed focal lens instead of a large zoom lens will yield comparable results in terms of light gathering ability and resolution. I am not interested in ...
2
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3answers
289 views

How to get sharper photos with a kit lens when in low light conditions?

I took my new Nikon D7500 out yesterday and its my first DSLR. I would like to get some thoughts on shooting sharp photos in low light conditions with it. I was shooting after sunset but before ...
1
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1answer
188 views

Why does aperture change when I zoom my lens even in manual mode? [duplicate]

I have my Nikon D7500 set to Manual Mode. I can change the shutter speed and it maintains the setting. When I change the aperture, the setting is not maintained and varies depending on the zoom of ...
0
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1answer
61 views

Olloclip Macro 21x lens for iPhone able to shoot objects far away?

Can Olloclip Macro 21x lens for iPhone be used for shooting objects far away? (note: amateur in photography and lenses seeking help from experts)
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2answers
191 views

What digital camera should I buy in order to use a Nikon Zoom-Nikkor 35-105mm f/:3.5-4.5 lens?

I have a Nikon Zoom-Nikkor 35-105MM 1:3.5-4.5 Lens f=35 and I'd like to know: which digital camera is compatible with this zoom? thank you lots, Giorgia
2
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4answers
1k views

Which lens has the same capability of lens mounted in Nikon P1000?

I am a beginner in photography and I have a Nikon D3400. I was impressed with the super zoom of Nikon P1000. But, I came into a conclusion to buy a tele lens rather than going for P1000. P1000 has a ...
7
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3answers
179 views

What affects DOF more…distance to subject or focal length?

Say I want shoot a butterfly. My goal is to make sure the butterfly fills the frame. I can do this in two ways...I can use zoom or I can simply move the camera closer to the subject. Which will ...
0
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3answers
188 views

Why is view on camera different from actual output viewed on phone?

I have a Nikon D5600. When I use telephoto lens (70-300 mm) for bird photography, on full zoom the bird does appear clear and near, but when the actual photo is produced, the bird appears far. When ...
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4answers
148 views

Why is zoom provided in Tokina 11-16mm?

I wonder what's the use of providing zoom in the Tokina 11-16mm. Why not make it an 11mm prime lens instead? It would contain less elements, so will produce sharper images. Also at such wide angle, ...
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3answers
147 views

What lens would I need to photograph a very distant cathedral dome?

I want to be able to photograph the dome of St Paul's cathedral from King Henry's Mound in Richmond Park. Would a telephoto or zoom lens be the best, what focal length/zoom would be the best for ...
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2answers
966 views

How to fix zoom creep in Canon EF 24-105mm F/4L IS USM lens? [duplicate]

I have the first version of the Canon EF 24-105mm F/4L IS USM lens. It has annoying zoom creep. If I walk around with this lens, with the camera hanging from my neck, occasionally the zoom ...
1
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1answer
355 views

How to soften a tight zoom ring?

After a fall, our Nikon Af-S 24-70mm 2.8G ED zoom ring got quite tight. It's specially hard to rotate it between 50 and 70mm. We can't send it to repair service, as we need it daily and have no ...
0
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2answers
860 views

Is the Canon EF 24-105mm f/4L IS USM lens parfocal or not?

I read a review of the Canon EF 24-105mm f/4L IS USM lens. It said: Focus shifts while zooming. Zoom before you focus. Surprised by this (I don't recall ever seeing the focus scale shift while ...
1
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1answer
147 views

What units are used for zoom and focus distance for the varifocal Dahua camera? [closed]

I've been working with an industrial Dahua camera and since I do not have a full model of how the camera works (and because I'm a complete newbie to cameras in general), a few elements are still ...
1
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2answers
400 views

New camera won't focus while zoomed in, old one focuses perfectly. Why? [duplicate]

I take photos of computer hardware for sale on ebay. I had been borrowing a camera for photos (Olympus SZ-16) and the camera will be able to focus while very zoomed in to a device while relatively ...
4
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3answers
167 views

How commonly do constant-aperture manual zooms actually influence the aperture mechanically when zooming?

I have seen a few examples of constant aperture zooms (eg a 28-100mm f/4 Ricoh.) in the secondhand markets where the aperture appears to be not fully open (visibly non-round hole) at some zoom ...
0
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3answers
131 views

What lens do I need on a P&S camera for photographing faces?

I'm just someone who enjoys photography, but I'm not a photographer. I don't know a lot, so please try and keep things simple. I've been using a Fujifilm Finepix S9200, a bridge camera with a 24-...
0
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2answers
276 views

How to achieve photo with no blurred background [duplicate]

When zooming I want to keep background not blurred. Is this even possible? I will have multiple cameras pointing at one object from different distances can I get a flat picture on all of the cammeras ...
2
votes
1answer
93 views

High resolution photography with C API and optical zoom [closed]

I am currently looking for solutions to take high resolution photos of objects via a dedicated software. (The software will be developed by myself.) Therefore I am looking for ideas for cameras, where:...
1
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2answers
265 views

What is the theoretical relation between zoom length and guide number for a flash?

The point of a guide number is to specify the relation between aperture number and distance. For zoomable flashes there are still extensive tables considering ISO number and zoom length. The ...
3
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2answers
365 views

Why is there an underexposed “shadow” along edge of frame on 35mm film when using my 70-210mm lens?

I shot a few rolls on Minolta XG-M with different lenses and some images have an underexposed edge. It take a while for me to go through a roll, to the point of me forgetting which lens/settings I ...
2
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2answers
110 views

Better Circular Polarizer for Sigma 150-500mm APO HSM [duplicate]

I recently used my Sigma 150-500 lens to shoot my son surfing. I was using a circular polarizer. The shots all appear out of focus even though focus was good and depth of field was good, even though ...
8
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2answers
372 views

Are there any lens hoods with zoom-moveable petals?

On a wide angle lens hood petals should be open wide enough not to obscure field of view; on a telephoto lens narrow petals would block sun better if shooting close to the sun. I imagine it would be ...
0
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1answer
498 views

How is a lens's listed minimum focus distance affected by zoom?

I have a 55-210 zoom lens, and the specs show that the minimum focus distance is 1m. Does that distance remain constant if I use the zoom? Or does that change it? Thanks in advance!
9
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2answers
891 views

What does “AUTO-ZOOM” mean on my Zuiko lens?

"Auto-zoom" is written on my Zuiko 35~70mm lens, is this a name of some lens technology?
0
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4answers
188 views

What lens should a new photographer consider starting with? (prime vs zoom, focal length, etc)

It seems like the generally recommended practice is to start with a prime and build some skill with something like a 35 or 50mm lens first before moving on. If I'm primarily going to photograph my ...
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2answers
211 views

200mm on 48MP body (with 2x digital zoom) vs 400mm on 24MP body

Is the "quality" from a 200mm lens on 48MP body (after a 2x digital zoom) going to be same as one on 400mm on 24MP body? Assuming the same apperture
2
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1answer
299 views

Why does my superzoom lens sometimes miss focus?

I've got a Nikon D7500 with the AF-S DX 18-300mm zoom, a combination I love. I do a lot of outdoor photography and find myself switching between wide angle and telephoto repeatedly as different shots ...
2
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2answers
4k views

What is the difference between the Nikon 55-300 DX and 70-300 DX lenses?

I am a new photographer and investigating entry-level Nikon telephoto lenses for possible purchase. (I already have the 18-55 kit lens.) I am confused about their telephoto zoom offerings. If I want ...
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2answers
198 views

If X fills the frame more than Y, does that mean X is closer to me in real life?

I saw this flat earther guy using the optical zoom of his Nikon P900 to zoom into a stop sign 1000ft away, then zooming into the sun. The gentleman was able to get a greater portion of his frame ...
5
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2answers
266 views

What is this odd brushstroke-like blur with my Canon EF 100-400mm f/4.5-5.6 L IS II?

I am shooting a lot of low light sports up in the north and I have noticed a lot of back focusing issues that I mostly blamed on myself with a 5D Mark IV and EF 100-400mm f/4.5-5.6 L IS II. But ...
2
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1answer
1k views

How do I zoom in and out with Olympus Digital PEN series cameras?

There is a dial with a magnifier icon, but it doesn’t do the zooming. The lens doesn’t have zooming, it only has focus.
3
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2answers
441 views

What factors affect the detail and clarity of a photo taken by a digital camera?

By clarity, I mean to preserve as much detail as possible when zoomed in. For example, I take a photo of my cat 10 meters away, and I want to zoom in and able to see each single fur as clear as ...
22
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5answers
7k views

Why doesn't the picture become darker the more you zoom in?

As your lens's focal length gets longer, fewer photons pass through the lens to hit the mirror/sensor. Why don't you see darkening when you look into the viewfinder and zoom in with a zoom lens, and ...
12
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4answers
4k views

How do manufacturers get to high (83x) zoom levels on hybrid cameras?

Obviously the biggest hybrid zoom on the market (Nikon Coolpix P900 I think) does not range from actual 24 mm to 2 meters in physical length, but what kind of optical systems do manufacturers use to ...
8
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2answers
5k views

How to zoom with Canon 77D with Canon 50mm 1.4 lens?

I've just bought this camera and the lens, and I feel so silly; I don't know how to zoom. Do you know how? When I turn it on it seems to be zoomed and I would like to zoom out.
1
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1answer
207 views

42.8mm on Nikon COOLPIX P7700 > 55mm on Canon EOS 77D? [duplicate]

I have a Nikon COOLPIX P7700 and because it has been losing function due to wear and tear after 6 years, and I wanted a better zoom range for wildlife, I decided to get a Canon 77D DSLR so I could get ...
2
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3answers
110 views

What's the most important factor to get clear images using high telezoom on moving subject?

So let's assume I've got the focus nailed down, so my focus is the best possible. I have a single subject I'm shooting at very high telezoom on Panasonic TZ-80, using 60x or 120x zoom, so the camera ...
5
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3answers
169 views

Digital zoom: Is the exposure computed using the zoomed frame?

I am trying to focus on the differences between digital zoom and cropping an image afterwards. This is discussed in detailed here: Is digital zoom really useful? focused on the compression ...
0
votes
1answer
181 views

What causes this pattern? [closed]

What causes the pattern seen on the image (it is a still from a video)? This doesn't seem to be a Moiré. It seems to be largely related to the camera or the filter (the pattern is fixed and aligned ...
3
votes
5answers
873 views

Layman's guide to making distant things clearer - add on lenses/monoculars for mobile phones

I'm completely at sea with magnification, crop, zoom and telephoto, despite reading various info. I think it's because I'm not terribly scientific! All I would like to know is, if I am shooting ...
2
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3answers
192 views

I'm on a budget of around $200-250. What is a good lens for photographing wildlife?

I have a Nikon D3000. I love photographing all wildlife, but especially bald eagles. However, I can't zoom in nearly enough with my 18-55mm lens that came with the camera. Would the 70/300 be enough? ...
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3answers
91 views

What camera should I buy as a first year animation student? [closed]

I am a first year animation student and my question isn’t very specific but I just need some advice on buying a camera as I want to make the right decision. First of all, I’m a beginner in ...
16
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11answers
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 (...

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