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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Putting telephoto lens on top of an OEM lens?

I want to use something like a Wyze Cam v3. Many users have removed the original lens and put on a telephoto lens. I dont want to remove the OEM lens. Can I put a telephoto lens on top of the original?...
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Beginning photographer wants advice on how to shoot Alaskan Cruise glaciers and wildlife [closed]

I have a Rebel T3i with Canon zoom lens EF-S 18-55 mm lens 1:3.5-5.6 IS ll and a Canon EF-S55-250 mm f/4-5.6 IS STM lens. I would appreciate any advice on how to get clear photos and video on our ...
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4 votes
4 answers
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How to understand zoom information

I'd like to understand how to determine how powerful zoom is going to be in particular cameras/lenses based on provided information. What is the best way to do this? I understand the zoom factor (e.g. ...
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What C adapter do I need for a 1x and 3x view microscope?

I am an archaeologist and my work supervisor just provided to me a binocular microscope with 1x and 3x magnifications along with a AmScope MD35 camera to take photos of the items that I am viewing ...
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How to improve t2i video crop mode 640x480 with a zoom?

This mode is an 8x multiplier. So a 500mm lens looks like 4000mm. The only problem is the wind. How do you keep the camera completely still on a heavy tripod and light winds?
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Nikon telephoto zoom ring turns but Lens won’t extend

Nikon telephoto lens zoom ring turns but will not extend lens but will retract it if I manually extend the lens! What is causing this and is it something that I can fix myself?
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Capturing License Plates From 50-100 ft (And Night)?

I'm attempting to build something with a Raspberry Pi that can hopefully capture moving vehicle's license plates 50-100 ft away (and at night). I understand very little about photography, but through ...
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4 answers
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Focal length, zoom-x, magnification, and their relationship to image size projected on sensor

I have been doing remedial research on zoom and magnification. Here are some of my conclusions ("sensor" here assumes a digital camera): The zoom-x number of a zoom lens is the maximum ...
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Black Magic Pocket 6k Pro using either Sigma 18-35 or Sigma 24-70

hoping someone can help me: I've seen a lot of people choose the Sigma 18-35 over the 24-70 for the bmpcc 6k pro but can never find out why other than because of the crap factor. The majority of my ...
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5 answers
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How can I get more magnification when shooting wading birds?

I have a Canon EF 70-300mm 1:4-5.6 IS USM lens. Will all 300mm zoom/telephoto lenses give the same magnification of the subject as mine does or, to get more magnification do I need to get a zoom or ...
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1 vote
2 answers
288 views

Why is my microscope camera so zoomed in compared to looking through the microscope's eyepiece?

Apologies if this isn't the right place for this--it's the closest match I could think of. Please feel free to move it if it should be elsewhere. At my work, I use a microscope on a regular basis. ...
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Zooming into RAW images

Hey there I was wondering why is it when I zoom into an image I took it looks grainy & pixalated. The image will be taken at an iso of 100 and look sharp on the the camera but not as sharp on a ...
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2 votes
1 answer
302 views

Is x50 zoom camera able to zoom 500 meter target area from a 6 km distance?

I have a x50 zoom camera and here is some specs of the camera and lens: Focal length: 6 mm ~ 300 mm Field of view: 58.4° ~ 1.4° Resolution: 2 MP I drew a scheme to explain my question properly, you ...
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2 answers
251 views

Telephoto Lens Advice for Canon

I use a Canon 600D and currently have three lenses: EFS 18-55mm A very old 50mm Pentax I use with adapter A very old (1970s?) Auto Super-Paragon 200mm f/3.3 I use with an adapter I want to get more ...
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Zoom in on an image without losing quality [duplicate]

Can i enlarge an image without losing quality? You know, like in cool movies people do. Like so:
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3 answers
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focal length to aperture relation while zooming - is my russian lens lying to me?

I have this old soviet/russian "Granit" 80-200mm lens, connected to my Canon 550d DSLR through M42 adapter. I also have "modern" kit 18-55mm lens. What I don't get is how aperture ...
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4 answers
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Does a lens with this zoom range exist?

I want to buy a zoom lens for a DSLR but I want its Focal length to start from a small number (18, 55, 100, 200) and end to a very large number (1300, 2600) so it can see near and far. Also I want it ...
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2 answers
104 views

Why isn't "maximum zoom" consistently stated for compact cameras?

Why can't maximum zoom (ie the change in size of an object on screen) consistently be stated on compact cameras? I am aware of the complications with focal length and lens size but I am only ...
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1 vote
2 answers
136 views

Mystery Scale on Hanimex Zoom Lens

I’m a bit of a newbie, and I’ve just bought a zoom lens for my OM10. It's a Hanimex One-Touch Zoom Lens 80-200mm F4.5 Macro It’s arrived and I’m trying to understand the scales on the lens. I can ...
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3 votes
3 answers
1k views

Backyard wildlife zoom question factoring distance

I'm quite new to photograhpy/videography and I only have a limited budget of $800.00US for a lens. As per Kai's request allow me to pose the question centered around the discussion I initiated: Which ...
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2 votes
1 answer
223 views

Why does my Nikon DX AF-S Nikkor 55-200mm seem to be more zoomed in at 200mm than my AF-S Nikkor 18-200mm? [duplicate]

Looking for some input experience here. I have a Nikon D3300 and the following lenses: 18-55 VR kit 55-200 VR 18-200 VR 35mm fixed I primarily use the 18-200 lens out of convenience but was doing ...
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1 vote
1 answer
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Sigma 70-300mm macro or nikon 55-200mm vr ii

I currently have a Nikon d3200 and am trying to decide between these two lenses. I understand the sigma can only manual focus on my camera. Im mostly looking to shoot wildlife , landscape or other far ...
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2 votes
5 answers
718 views

Magnification percentage meaning

How do I convert from the percent magnification that many photo editing apps use to times magnification? For example, if I have taken a photo at 30mm and then zoom to 100% percent in Lightroom, what ...
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4 votes
3 answers
476 views

How to reduce shake at high focal lengths {2600mm-3900mm with adapters} when on a tripod?

I have a Nikon DIGITAL DSLR 650 1300mm zoom lens. In honour of this, I bought a Zomei tripod which is of good quality but even so, the slightest breath of wind makes the lens shake, and at such high ...
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1 vote
3 answers
217 views

Variable Aperture Zoom Lens Dials

I'm new to photography and recently won a bid on a Nikon D70 with a Nikon AF Nikkor 24-120mm 1:35-5.6D lens. I know the lens has a variable aperture. What I can't figure out is what the top sets of ...
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2 answers
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Why can't my Nikon P900 zoom like the demo videos I've seen?

I have a Nikon P900 and I am somehow disappointed by the zoom level. It is obviously better than my other camera (Panasonic FZ-50, comparison done by making photos of the moon), but still... (please ...
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4 votes
1 answer
197 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 ...
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19 votes
10 answers
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 ...
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1 vote
2 answers
152 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 ...
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4 votes
2 answers
364 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' ...
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2 answers
163 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 ...
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2 votes
5 answers
297 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 ...
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7 votes
3 answers
1k 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 ...
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2 votes
6 answers
528 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 ...
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1 vote
1 answer
488 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 ...
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0 votes
1 answer
74 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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0 votes
2 answers
277 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
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2 votes
4 answers
3k 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 ...
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7 votes
3 answers
369 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 ...
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0 votes
3 answers
370 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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-2 votes
4 answers
154 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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1 vote
3 answers
227 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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1 vote
2 answers
3k 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 ...
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1 vote
1 answer
843 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 ...
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0 votes
2 answers
2k 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 ...
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1 vote
1 answer
307 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 ...
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1 vote
2 answers
765 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 ...
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4 votes
3 answers
239 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 ...
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3 answers
139 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-...
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0 votes
2 answers
1k 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 ...
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