Questions tagged [lens]

A photographic lens is used to focus the light onto film or a digital sensor. Many cameras have interchangeable lens systems, allowing the photographer to choose the type of lens to use.

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2answers
60 views

What lenses are compatible with older Canon EOS DSLR?

I own a Canon EOS 1100D camera that was released in 2011. What lenses are still compatible with this model?
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1answer
58 views

What are the distinguishing features of various Sony mirrorless camera models?

I am not a professional photographer and it is basically my hobby. I would like to buy a mirrorless camera and I have thought to get Sony a6000. Most of the time I take pictures of landscape and ...
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0answers
44 views

Which lens do i need to purchase [on hold]

I have a Canon T2i body. My main photography is everyday things, and action (sports baseball, basketball) but mostly
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1answer
33 views

How does registration distance affect lens distortion and aberration correction?

If I use a lens with an extension tube, how does changing the distance between the lens and camera affect optical correction of distortion and aberration via glass elements (as opposed to digital ...
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0answers
43 views

Proof of the relationship between the image area and focal length of a lens [duplicate]

It is a well-known fact that image area is directly proportional to the square of focal length of the lens. Is there any mathematical proof to it? (Possibly starting out with the lens equation and ...
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4answers
123 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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1answer
625 views

Can the front glass on a broken lens be repaired?

I just newly broke this glass on my lens tonight. Wondering if I need to buy a new lens or if I can repair this. It is a Canon EF 85mm f/1.8 USM. This is my favorite lens to use for portraits!
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2answers
76 views

Is it possible to get green and red chromatic aberration?

In one of the hallucinating scenes in a video I have played. The vision is blurry and objects nearer the edges of the screen are green and red Now the usual chromatic aberration patterns are purple/...
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1answer
113 views

What can I improve in my social dance photography?

I love shooting social dancers. Can you give me constructive feedback at my latest albums what I do you like and what you think I can improve? https://stanyakimov.com/albums/ All photos are taken ...
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1answer
62 views

What lenses have the most human eyelike images [duplicate]

I have heard wide lenses make your head inflated which isnt good for portraits like the telephoto which deinflates your head. So If I use 35mm prime on full frame. Does it mean I will get perfect ...
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2answers
129 views

Why do I get so many unsharp pictures with my Canon 70-200 IS f/2.8?

Please take a look at the picture below. You can see where the focus point was thanks to a LR plugin. But the image is unsharp - again. And yes, I'm sure the dog was standing still enough for 1/250 ...
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3answers
144 views

Does a camera have to have a contiguous housing?

The lens group in this picture would have its own protective lens tubes like the one on a camera but one for each lens group. What would be an issue having a gap between the lens group and stray light ...
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1answer
188 views

Can a camera be a mile long?

Could parts of a camera be spaced out over a distance rather then together to work in a way a normal camera cannot? What characteristics would this camera have over a normal camera? In the picture ...
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0answers
214 views

What causes this repetition pattern in a picture? (when re-arranging its pixels by their intensity - code included) [closed]

Just out of curiosity, I was playing with RGB coordinates and pixels of pictures. Then for some reason I decided to get all pixels of a picture, get the RGB coordinates/values of each pixel (eg. RGB(...
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6answers
9k views

What is the farthest a camera can see?

At what distance can a face no longer be identified using a camera? At what distance can a figure of a person no longer be captured?
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1answer
50 views

Can the MTO-11 mirror lens be extended to 2000mm using an extension tube

In this link https://www.dyxum.com/dforum/ayone-knows-the-mc-mto11ca-10-1000-telephoto-lens_topic12136.html A poster claims that the 1000mm mto-11 can be extended to 2000mm by removing a stop and ...
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1answer
59 views

What is the mount with three tabs and two linkages on these Albinar lenses?

I have two Albinar lenses that I want to identify the lens mount for so that I can buy an adapter for my Sony A5000 (E mount) camera. I bought them at a yard sale recently. They are vintage lenses. ...
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4answers
124 views

Can I use 50mm f2 lens to take building photos?

Can I use 50mm f2 lens to take building photos? In my case will be an Yashica ML 50mm f/2.
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4answers
89 views

Does white balance change from lens to lens? [duplicate]

Does white balance change from lens to lens? Though I think it does not, the reason I ask is auto white balance with a wide-angle lens seems to be different from auto white balance with a macro lens. ...
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2answers
55 views

Is the Canon EF 50mm f/1.8 STM compatible with the Canon 4000d? [duplicate]

I'm a photography enthusiast and I'm looking to buy a canon 4000d and a lens for it, but am not sure whether it's compatible with a canon 4000d or not.
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3answers
128 views

Which are the best lens for Street Photography? [closed]

I'm considering to buy an Olympus Pen F and I have to choose between two offers: the former comes with the 17 mm lens and the latter includes the 14-42 mm and is 50 euro cheaper. I'm interested in ...
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2answers
74 views

Lens(es) for Pentax K70 (in Iceland) [closed]

I've bought the K70 with the DAL 18- 50 WR some time ago. I'm still really new to photography and don't have much knowledge yet about it. In almost two weeks I'm going to Iceland and I'm planning to ...
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2answers
119 views

Why is there motion blur at the edge of photos?

I’ve noticed a problem that has appeared recently with my Nikon D7200 and 18-140mm kit lens. When I take photos of distant objects, I get what looks like a motion blur at the edges. I have looked up ...
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3answers
134 views

Need help choosing between two DSLR/lens setups

Currently, I use my smart phone's camera to photograph cars, trucks, and auto racing. I shoot outdoors, mostly in daylight, but often in gloomy overcast weather. Occasionally, I may shoot at dusk. I'...
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1answer
55 views

Is there an online lens diffraction and maximum sharpness table?

I simply want to see an table that lists the lens diffraction limit of each camera. I have came across this well done answer with animated PNG and I realized there i also the perfect sharpness ...
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2answers
40 views

Canon EF 70-200mm 1:2.8 L IS III USM lens hood diameter?

The Canon EF 70-200mm 1:2.8 L IS III USM is specified to have a max outside diameter of 89mm, but I assume that is without the lens hood (ET-87) attached. I can't seem to find the outside diameter ...
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2answers
112 views

How to decide which MM lens to use? [duplicate]

I recently purchased Nikon D5600 with dual lens. It has come with: AF-P: 18-55 mm, and AF-P: 70-300 mm lens I was just going through Nikon School videos and it was showing one 18-105 mm lens. I ...
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2answers
88 views

How to fix plastic mount on dropped Nikon 70-300mm lens?

I accidentally dropped my Nikon 70-300mm lens and two small plastics broke off. Can it be fixed?
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1answer
68 views

What should I do when my D3400 aperture is stuck no matter what lens I use?

I have a D3400 and recently I haven't been able to change the aperture on any of my lenses in manual mode. I have lenses with aperture rings and if I set the aperture to anything below the largest ...
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1answer
16 views

Zhiyun Weebill Lab with Tokina 11-20mm?

Have anyone used the Zhiyun Weebill Lab gimbal with a crop sensor DSLR and the Tokina 11-20mm lens? Would it balance without a problem? Would it balance with an ND filter screwed on?
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3answers
231 views

Why are landscape photos “subpar” on Canon EOS 750D with Sigma 17-50/2.8 lens?

I currently own a Canon EOS 750D (Rebel T6i), which I mostly use with a Sigma 17-50/2.8 and a Hoya circular polarizing filter. However, I can't help but feel disappointed when in looking at my ...
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0answers
30 views

Fujifilm Instax mini 90 lens cover won’t close

My mini 90 neo classic camera lens cover won’t close when turned off. Please help To note: took it to the beach to take some pictures and there was a storm happening and lots of sand was blowing ...
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4answers
118 views

Which lens should I get for a Canon T7i for shooting on safari, the 70-300 or 55-250? [closed]

Haven't had a camera for years. I read great reviews on the Canon T7i EOS DSLR. My wife & I are going on a safari in South Africa and I'm thinking about buying this. I can get it with an 18-55mm ...
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1answer
48 views

Question on f-number and exposure [duplicate]

Is there any mathematical proof to show that the exposure in a camera is independent of the focal length used, if the f-number (ratio of focal length to lens diameter) remains constant?
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3answers
96 views

Can a plastic-barreled lens be damaged if stored inside a car? Can sunlight damage the lens?

One of the lenses I purchased has this note in the instruction manual: "Do not place lens in direct sunlight or leave it in an extremely hot place such (sic) inside a car. Doing such could damage the ...
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2answers
62 views

Relationship between f-number and amount of light being let into the lens system [duplicate]

Why does smaller f-number imply greater aperture diameter and consequently, greater amount of light entering the lens of a camera? As evidenced from my study across a number of resources, an absolute ...
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1answer
133 views

The Sunny f/16 Rule [duplicate]

Sunny-16: for optimum exposure when shooting on a clear, sunny day outdoors (distinct shadows), set the aperture to f/16 and the shutter speed as the reciprocal of the ISO. While reading about the ...
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4answers
865 views

How to know whether a Tamron lens is compatible with Canon EOS 60D?

I am trying to find a compatible lens for my Canon EOS 60D. A Tamron lens is my preferred option as I used to have one for my old Minolta when I used 35mm film. The motor in my EOS 60D is a USM. I ...
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5answers
87 views

How does background blur and DoF vary with sensor size for a prime lens?

Let's assume I have a prime lens for full frame, with fixed specs (let's say 85mm f/1.8). Changing the lens is not an option, but I have a choice of a full frame camera and a crop sensor camera. The ...
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2answers
53 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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2answers
63 views

Will my old film lenses be damaged if they are exposed to high temperatures in a moving truck?

I’m moving cross country and am slightly worried about some of my film camera lenses and bodies in the heat. The moving company said it’s possible for the trucks to get between 105F-120F. I’m worried ...
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2answers
107 views

DSLR lens image inversion?

 Out of simple curiosity, do DSLR cameras produce an inverted image on the sensor, with the image being flipped by software?  I've dabbled with astronomy prior to my current interest in ...
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3answers
150 views

Is it beneficial to use a crop sensor camera with a full frame telezoom?

I have a Canon 100-400L telezoom lens. It gives up to 400mm of focal length, but when used on a crop sensor camera, the equivalent focal length would be 640mm. Because the equivalent focal length ...
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1answer
52 views

Canon EOS 70D - Err 01 - Communications between the camera and lens is faulty [duplicate]

I have the Canon EOS 70D with the standard 18-135 lens on it. The camera was working fine and I dropped the aperture down when taking a photo and the camera froze. I turned it off and when I turned it ...
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6answers
1k views

Does a lens with a bigger max. aperture focus faster than a lens with a smaller max. aperture?

The assertion by a well known photographer is that the Nikon 400mm f/2.8 set to an aperture of f/5.6 will let in 4 times the light compared to a Nikon 500mm f/5.6 lens set to f/5.6, keeping the ...
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2answers
99 views

Does sensor size affect performance of image stabilization?

Many lenses today have image stabilization (IS) in the lens. At least Canon and Nikon do this. The Canon and Nikon systems allow one to use lenses intended for full frame cameras in their crop sensor ...
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1answer
75 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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2answers
167 views

Would adding an external lens allow one area outside the focal plane to be in focus?

I’m doing high speed scientific imaging. I have a camera mounted in a fixed location with a Micro Nikkor 105mm lens. It’s viewing a fixed subject that has a small mirror oriented 45 degrees underneath ...
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1answer
73 views

How can I tell whether or not a lens has focus breathing?

So recently I got a 90mm macro lens, installed a focus bracketing app onto my camera and let it run. Unfortunately, turned out that this lens has focus breathing which means the actual zoom level in ...
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2answers
103 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 ...