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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3
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3answers
592 views

Camera Lense effect on the physical camera

I was watching a video of pixar teaching how physical cameras work. Now two things are important for my question, first the number of light beams that can go through the small aperture and secondly ...
13
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12answers
79k views

Can I shoot a photo with my DSLR without the lens on?

I thought it would be interesting to see what kinds of effects I could get by shooting a photo without any lens on my DSLR. However, when I take the lens off, it tells me that no lens is attached (...
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2answers
2k views

Why is the autofocus not working on my Canon EF 70-200mm f/2.8 L IS II USM?

I bought the EF 70-200mm f/2.8 L IS II lens and the autofocus is not working. It's non-functional. I can use the lens in manual mode but not in autofocus. What could be the cause?
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1answer
81 views

What is causing Samsung NX1000 to report “No lens fitted”?

I have a Samsung NX1000. I am getting a no lens fitted sign on the screen. It is the correct lens that came with the camera. The focus also seems blurred. What could be the problem?
3
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2answers
44 views

Raw therapee lens/geometry correction Sony a6100

I recently bought my first "real" camera, a Sony Alpha 6100 (Sony ILCE-6100). I select that both, .jpg and .arw should be stored. When I compare the .jpg and the .arw picture the geometry looks a bit ...
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2answers
163 views

What's the best choice of lens from an optics surplus shop to get a Stanhope Lens-like magnifying function?

I am looking to do some experiments with my cellphone and a lens, holding the lens in contact with my cellphone lens. I'm looking for a lens that has the shortest back focal length length possible, so ...
0
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2answers
153 views

Calibrating a lens…is auto focus less reliable when zoomed?

So, I'm calibrating my lenses to a new camera body, a 5D Mark IV. When calibrating my 70-200 ƒ2.8 (version 1), I found that the focus was accurate at 70mm. However, when I calibrated it at the 200mm ...
5
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6answers
13k views

What do the mm numbers on lenses mean?

I'm confused about lenses and numbers. Why are some lenses ex. 50mm-300mm Different sizes? Some lenses with the same mm numbers are huge and some are small... What's the difference? Also the prices ...
26
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15answers
45k views

How does the lens diameter influence photo quality?

I have tested two different 50mm lenses in my camera. One was a Nikkor 50mm ∅52mm. The other one was a Sigma 50mm ∅72mm. I took some pictures with both lenses using the same setup for aperture and ...
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1answer
99 views

What is the mount on this Sigma lens? It is smaller than Canon EF

I just got a SIGMA 17-70 1:2:8-4 DC (C) lense. Mount looks very much like Canon EF (S) but it's smaller. Added a foto from a 70-200 EF to compare. Anybody knows what this mount is for? Many thanks in ...
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1answer
103 views

What is the mount on this Beston lens?

Bought this lens cheap at an estate sale, but now I'm trying to figure out the adapter I need to get it to fit my Rebel XS body. I've looked at dozens of pictures on the internet, but cannot narrow ...
7
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4answers
5k views

Nightclubs photography, setup to capture the real mood and atmosphere?

I was hired to photograph at a nightclub on Friday. I've never done this before, and I do not have any specification for the moment. I'd like to be able to capture the atmosphere at the right moment, ...
15
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5answers
3k views

What are the differences between these lenses and how will they affect a beginner?

My father is giving me his Canon 50D and Canon EF-S 17-85mm f/4-5.6 IS USM lens. I noticed that most kits on the market come with the EF-S 18-55mm f/3.5-5.6 lens and I'm considering it instead of ...
4
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5answers
2k views

Will a lens upgrade from the kit lens give me better colors on my backpacking travels?

I currently have the Nikon D5300 along with the kit lenses (18 - 55mm). I use it for my backpacking travels to make better shots than with the smartphone, but what I've noticed is that the photos are ...
0
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4answers
364 views

Sigma DC 18-250mm Macro HSM Lens Autofocus not locking to let me click the picture

I was travelling on a trip with my camera. One day I was using my Sigma DC 18-250mm Macro HSM lens on Canon 70D in autofocus mode to take a picture. When I pressed my shutter button halfway to focus ...
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0answers
171 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
516 views

Wide angle lens vs. kit

I have a 18mm -55-mm 'kit' lens with my Nikon D40. Is it effective as using a 24mm true wide angle lens for indoor real estate photography?
3
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1answer
71 views

Troublshooting constant whirring sound from 70-300mm Canon Lens

I have a Canon Rebel XTi with a 70-300mm lens. About 6 months ago, it started making a constant whirring sound every time I connected it to the camera. The whirring sound occurs even when (1) the ...
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1answer
808 views

How do the 35mm Zeiss Loxia vs Sony Zeiss Sonnar compare for IQ for landscapes?

How do the Sony Zeiss Sonnar 35mm f/2.8 and Zeiss Loxia 35mm f/2 lenses compare on the Sony a7? (I am interested more with image quality than ergonomics, build quality, price, etc.) I am ...
4
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4answers
44k views

Which is the best version of Helios 44 series 58mm f/2 M42 mount lens

I'm looking to buy a Helios 44 series 58mm f/2 M42 lens for my Nikon D600 and will be mounting it using an M42 to F-mount adapter. I'm primarily buying this lens for portraits due to the interesting ...
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2answers
303 views

Will the lens for a D30 fit a 5d mark ii, iii, or iv?

Will the lens for a D30 fit a 5d mark ii, iii, or iv? I'm upgrading my mums camera and want to make sure.
3
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2answers
5k views

Why isn't a Sigma HSM lens autofocusing with my Nikon D5600 — is there a compatibility problem?

Today I had a chance to try a Sigma 70-200mm f/2.8 EX DG OS HSM, a 2013 model lens, on my Nikon D5600. Everything was okay. I was able to take pictures with it. But auto focus didn't work as it should....
3
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2answers
295 views

How to identify the original manufacturer of lenses branded Soligor?

There are Soligor-branded lenses for which I wish to identify the manufacturer. I have read that Soligor encoded the manufacturer in the serial number, so in principle, I just need to find a list of ...
2
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3answers
236 views

What is the necessary recess on an enlarger lens board?

I have recently acquired a Meopta Belar 75mm/f4.5, to use with my Durst M605 enlarger. I was remiss in not checking the mount of this lens (M23.5) before I bought it, and have therefore ended up with ...
2
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1answer
90 views

How to fix shattered rear element of Zenitar 16/2.8 Fisheye?

The rear element of a Zenitar 16/2.8 Fisheye is shattered. What can I do to be able to continue using this lens? I know it is a clear filter. It cannot simply be removed because it is an essential ...
5
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1answer
561 views

How to identify the original manufacturer of lenses branded Vivitar?

There are Vivitar-branded lenses for which I wish to identify the manufacturer. I have read that Vivitar encoded the manufacturer in the serial number, so in principle, I just need to find a list of ...
0
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1answer
216 views

Newborn photography - Lens for crop Nikon D7200

I want to start photograph newborns. But know I am pretty comfused which lens would be good on my Nikon D7200 crop camera.? Everywhere i look for information all suggestions are for full frame camera. ...
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1answer
169 views

How much does it cost to repair a dropped 70-200mm f/2.8 lens?

I just dropped a 70-200 f2.8 lens and the images are pretty washed out and blurry. I am really sad about it since I just borrowed it from one of my friends for the weekend. The exterior of the lens ...
3
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1answer
905 views

Which terms accurately describe the lens mount on a Canon 7?

I've gotten a used Canon Model 7 rangefinder camera from my grandfather. I'm given to understand that it's a reasonably cool old camera, and the 50mm/1.4 lens isn't too shabby either. I am ...
0
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2answers
134 views

Is my Nikon 18-200mm 1:3.5-5.6G lens with broken front glass beyond repair? [duplicate]

My lens broke somehow. I didn't drop it as far as I remember, but the cause of the drop isn't really the point... a part of my lens broke, and my lens cap is stuck to it. Is my lens a goner? Can I buy ...
3
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2answers
1k views

How to disassemble a lens assembly?

I recently picked up an Olympus OMZ 50mm f1.8 pretty cheaply of ebay. The front element has a slight mould on the rear side although so far I've not seen this affect the image quality. Disassembling ...
0
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1answer
48 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 ...
1
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1answer
120 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 ...
0
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1answer
58 views

angenieux 14 x 8

Can anybody point me to a place online with information on this piece. I am trying to determine value for a client for estate purposes. Thank you in advance. Other marks Serial #1526825. F.8.112 MM....
4
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5answers
35k views

How can I easily tell if a sensor or lens is damaged?

I am pretty interested in recognizing any damage to digital camera in very low level (without any advanced tests). For example, how can I identify the damage of a sensor or lens? If there are any ...
2
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2answers
221 views

How can I do 4x5 rise/fall movements with super wide angle lenses?

I'm looking for super wide angle lenses, ideally 50mm and below. I'm only interested about decent rise/fall movements because I do mostly architecture, and I'd like to be very close to the subject. ...
0
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1answer
48 views

Are sensor swabs (used but good, or new) and fluid a good choice for internal element cleaning?

From experiments, it seems that lightly-used sensor swabs (that are NOT contaminated with oils or abrasive particles) make reasonably good internal lens element cleaners and dryers (they are actually ...
4
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4answers
825 views

Lens Cleaner Recommendations

What is, in your opinion, the best lens cleaner? Which do you think is the most effective/best value for your money/most easy to use, etc. Please include advantages/disadvantages as well as price and ...
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4answers
177 views

Second lens after Nikon 16-80 mm: Nikon 50 mm f/1.8g or other? [closed]

I know that comparing lenses is a subjective and often futile effort, but I hope that if I convey my priorities and current understanding (as a relative beginner), I can still gain a lot of insight ...
1
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1answer
109 views

How good is the Nikon 70-300mm lens that comes along with the Nikon D5600?

I'm planning to buy a new camera (Nikon D5600) and it turns out that they have two variants. One of the variants come with the usual 18-55mm lens and a 70-300mm telephoto lens. The build as per me, as ...
4
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4answers
4k views

Canon EF135mm f/2L vs 70-200mm f/2.8L IS for Indoor shooting

I'm doing an indoor shoot of a large event with lots of people (which I was informed the lighting is "dark-ish" -- think large party) and I'd like to get candids without getting too close. I'm split ...
1
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2answers
43 views

How will a coating defect affect my images

I have rented an RB 67 and the 90mm lens it came with seems to have a very visible defect on the coating of the front element. How is this likely to affect my images? And what sort of scenes/lighting ...
1
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2answers
338 views

Why doesn't the aperture change on a Nikon AF 50mm ƒ/1.8D lens? [duplicate]

I am facing problem with a Nikon AF 50mm ƒ/1.8 lens which is attached to a Nikon D7100. Although I can change the aperture from the camera (in M mode) it seems that it is not changing in photos. What ...
2
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5answers
2k views

Does a full frame lens require more light on a crop body? [duplicate]

When using a full frame lens on a crop body, does the lens require more light? If I use an f/2.8 full frame lens on a crop body, does it become an f/4.2 (*1.5)?
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3answers
154 views

Does the autofocus system look through the lenses?

I have a doubt about the effect of putting a filter (polarizer, UV etc) on the autofocus system. In theory, a lens which is put in front of the lens will affect the focus (we must set a different ...
13
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6answers
1k views

What lens characteristics contribute to attractive lens flare?

Some lenses give really harsh and unwanted flares. Some gives beautiful flares that add depth to an image. What's the science behind this?
46
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7answers
11k views

How do constant aperture zoom lenses work?

Cheaper zoom lenses usually are faster at the wide end and slower at the long end (for example, the $150 Canon EF-S 18-55mm f/3.5-5.6). More expensive constant-aperture zoom lenses have the same ...
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1answer
155 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
124 views

Using a Sony E mount lens on a Nikon body? [duplicate]

I was just wondering if it's possible to use a Sony E mount lens on the Nikon D3200 by using an adaptor? I recently got given a Sony lens for free so I dont want to get rid of it.
0
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2answers
290 views

Why doesn't lens focus after turning focusing ring while set to autofocus?

My brother tried my new camera and was turning the focusing ring quite harshly on auto focus. (50mm canon lens) I’ve read multiple similar questions but nothing is quite what I mean. Ever since my ...

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