Napioa - Wind Origins

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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
92 views

35mm DX prime lense on dx crop sensor(nikon d3300) [duplicate]

I have Nikon D3300 DSLR. I'm confused with 35mm and 50mm prime lenses on FX and DX cameras. Somewhere I read that if a 35mm prime lens is used on a FX camera the focal length is equivalent to around ...
1
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1answer
168 views

Will Nikon D lenses work on a Nikon D810 camera?

Can a Nikon "D series" lens work properly and let me use the full potential of a Nikon D810?
-1
votes
3answers
285 views

Why don't Canon and Nikon lock out third-party lens makers?

Context Odd question but looking at the market, I see Tamron/Sigma making lens for first-party companies such as Canon, Nikon and Sony. For manual lens such as Zeiss ( for Canon/Nikon) I see that ...
2
votes
2answers
620 views

What is the difference between these 200mm, 70-200mm and 70-300mm lenses?

I've been doing photography for awhile but I don't know a lot about lenses. I'm looking into 200mm(+) lenses (for future reference). I have a few questions about the difference between these lenses. ...
2
votes
2answers
76 views

Why “plane of focus”? [duplicate]

The spatial locus on which a lens/camera focuses (and so appears sharpest in the resulting image) is always referred to as the "plane of focus". My question is why does it have to be a plane? As I ...
1
vote
1answer
125 views

How useful is the 24-70 lens?

I am an amateur photographer. For the past few months I have been shooting with my 50 mm lens. Recently I am getting booked for more shoots, like family photos and maternity. It was suggested that I ...
6
votes
5answers
195 views

What is the safest and most convenient way to carry heavy lens so it's easy to switch in the field?

Context I use a Nikon 300mm f4 lens. It's a good lens but it's also rather heavy. Question What is the safest and most convenient way to switch teleprimes (or heavy lens in general) out in the ...
30
votes
12answers
6k views

Does it make sense to put an expensive lens on a cheap camera?

I've spent a while looking at lenses and their prices, and now I'm wondering... Does it make sense to bolt a really expensive lens onto a cheap camera? Or is the extra performance only worth it if you ...
4
votes
2answers
123 views

Chromatic aberration or lighting problem?

Over the weekend I went over to a photography shop, and they let me bolt various lenses to my SLR, including some seriously expensive ones. I took a few pictures, and was impressed. But when I got ...
-3
votes
1answer
83 views

Can't decide which lens to get - wide angle vs 18-135mm IS STM [closed]

I can't decide whether I should get 18-135mm IS STM or some wide angle lens, which would cost approximately the same amount of money. I own 18-55mm IS STM and 75-300mm USM. I use Canon EOS 100D. What ...
0
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3answers
79 views

Lens recommendations? [closed]

Hi im an amateur and im really interested in learning photography.im not trying to be a proffesional i just want high grade quality shots! Id like to take studio grade pics of my newborn, family ...
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votes
1answer
65 views

Can I fix my broken Nikkor 24-85 D?

I slipped with my camera the other day while at a wedding shoot. I fell on the lens and this happened: The lens is now stuck at 24 to 35. Has anyone here experienced this? Is there any DIY fix? ...
1
vote
3answers
140 views

How do I adjust aperture and ISO when using a manual lens on a Canon Rebel?

I have a Rebel T3 and have been fooling around with it for several years using all the dial options, except the manual ones. I have read up and understand ISO Aperture and shutter ...
0
votes
3answers
127 views

What lens should I get for my wife as a gift to go along with a Nikon D810? [closed]

I hope someone can help me. I've bought a Nikon D810 for my wife who's a keen amateur. Can someone help me with choosing a lens? She takes portraits and landscapes primarily, and I have to say I'm ...
1
vote
1answer
86 views

Is there any benefit to tilting the camera holder in a camera bag?

Would it be a good practice to tilt the pad inside the camera bag that sticks to the its side in order to prevent the lens from touching the bottom Instead of | | making it \/? I recently bought a ...
1
vote
2answers
146 views

How can lens cause consistent front or back focus?

I can understand body focusing problems, but I can't imagine why lens might cause front or back focus. I have two third party manufacturer lenses for my Nikon: one is front-focusing, the other is ...
0
votes
1answer
52 views

Nikon Lens: A (Auto-focus) vs. A/M (Auto-focus/Manual)

I have two lenses which are 18-140 VR and 50 1.8G. On the 18-140 VR I got a button showing A and M while on the 50 1.8 I got a button showing A/M and M. I understand that A is for auto-focus and M is ...
1
vote
4answers
160 views

Does a 35mm DX lens, mounted on a crop body, have the same field of view as a 35mm FX lens mounted on a full frame camera?

I know that when you use lenses made for full frame cameras on a APS-C camera, you should calculate the crop factor. E.g., a 35mm lens designed for a full frame camera mounted on a APS-C body should ...
3
votes
3answers
166 views

Are there any cheap, fast lenses capable of highschool sports photography?

I recently took on my first paying client, and she is also into photgraphy. She usually does sports for her highschool yearbook. They just have an entry level Canon DSLR with a kit zoom on it that ...
1
vote
0answers
54 views

Nikkor 28-70mm F2.8 lens problem: AF and aperture don't work

I bought this lens second hand from someone who has no idea about this kind of thing. The price WAS low, but not low enough to justify a broken lens. It has no glass scratches and at 300£ it seemed to ...
4
votes
3answers
147 views

Using a focal reducer to match a lens to a crop sensor camera

Context So I've recently watched a video about how Tony Nortrup is referencing that you should buy the lens that perfectly fits your image circle, to get the most sharpness out of it, or so I'm ...
2
votes
5answers
286 views

Why does it seem like large sensors are necessary for good low-light performance?

Phone manufacturers have recently started advertising the size of the photosites on smartphone camera sensors. They argue that larger photosites lead to better low-light performance. I think a good ...
3
votes
2answers
523 views

Why is the Depth of Field Preview button necessary?

I've looked far and wide but i cannot find the answer for this question. I know some older cameras and lenses used to have aperture rings on them, which allowed the user to set how open or closed the ...
0
votes
1answer
31 views

Sigma 70-300mm 1:4-5.6 APO Macro super lens

Is there an adapter to fit the Sigma 70-300mm 1:4-5.6 APO Macro super lens to the body of a Sony a200
4
votes
2answers
97 views

What can I put inside a 39mm gel holder?

Context So I have a 39mm gel holder for my Nikon 300 f4. AF lens. Question What can I put inside it? It doesn't look like a normal filter will work.
1
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2answers
108 views

Is it safe to test a (possibly) salt-water damaged lens (Tokina 11-16mm) on a new camera body?

I have a Tokina ATX AF116 DXII S - 11-16 mm F2.8 AT-X (II) 116 Pro DX for Sony and I recently ruined my Sony α65 through a salt water wave which caught me out during a storm photoshoot. Weeks ...
2
votes
1answer
148 views

Does a lens exist that is parfocal, has a linear zoom throw, and is affordable?

I'm working on a project to create, essentially, a servo-powered zoom lens, using a (D)SLR zoom, a zoom ring gear, and a stepper motor. After mounting the zoom ring gear, I'll attach a pinion gear to ...
2
votes
1answer
135 views

How to obtain 180° FOV and little optical errors?

I'm thinking about building an all-sky camera, i.e. an automated camera that points straight up to the zenith and that captures the entire sky down to the horizon. The idea is to capture celestial ...
2
votes
2answers
143 views

For those that can afford fancy teleprimes is it preferred to use AF or MF for birds?

Context I'll be using a Nikon 300mm/f4 on my Sony a6000 and seeing what birds I can get with it. The Sony 55-210mm is what I've been using but it lacks the reach and native teleconverters. ...
0
votes
2answers
54 views

Nikon J1, takes pictures but they are all black, doesn't seem to “see” things, lens not the problem

I have a nikon J1, it has always worked well. Today I wanted to take a picture and the screen appeared black, like something was blocking the light completely or I was trying to take a picture of a ...
5
votes
3answers
686 views

Since it's not “focal length”, what is the term for the distance at which things are in focus?

I was under the impression that the “focal length” of a lens is the distance at which stuff appears in-focus. (E.g., perhaps I set the camera so that objects 3 meters away appear sharp, ...
1
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1answer
50 views

Underwater protection for lenses

I've got a Sony A6000 camera and planning to get Nauticam underwater housing for it. I've noticed the box is often shown (in pictures, videos and such) with a lens, but I can't seem to find any ...
5
votes
1answer
610 views

What is this large white Canon telephoto lens in a 1990 magazine ad for the EOS 1?

I am trying to identify this Canon Telephoto Lens seen on an ad at the back of an old copy of National geographic from Feb. 1990: I have tried to look for it on Google, but I can't find one that is ...
1
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3answers
337 views

Why do so many old cameras have camera lenses made in Japan?

I'm browsing what the world has to offer me when I want to buy old (circa ’70s or ’80s) camera, e.g., a Canon EX Auto QL. And I've noticed that most of them have camera lenses made in Japan. Was Japan ...
0
votes
1answer
74 views

How do I calculate the field of view of a 50mm focal length biconvex lens with the retina as sensor?

Hi I need to know the field of view of a 50mm focal length lens. I know the field of view is dependent on focal length of the lens and the image format dimension (i.e., dimensions of the sensor). If ...
2
votes
2answers
123 views

How do universal clip-on iPhone lenses work?

So, recently I see a lot of clip-on Universal iPhone lenses like this (aliexpress link). I have a CCTV camera at home. It has a lens which looks like this from m12lenses.com. Can I clamp these iPhone ...
4
votes
4answers
439 views

Does the same focal length on the same camera always result in the same FOV?

I'm confused about whether the same focus length across different lenses on the same camera always produces the same Field of View. Some lenses are advertised as wide-angle and some are not. Is there ...
1
vote
0answers
51 views

Canon vs Sigma vs Tamron lenses? [duplicate]

Is there a significant quality difference between lenses made by Canon and those made by Sigma or Tamron? Specifically, I have been looking at the EF 300mm f/2.8L IS II USM: but if the Sigma or ...
0
votes
5answers
71 views

Nikon D3200 wide angle lens [closed]

For the Nikon D3200. As far as wide angle lenses go the prices seem to range from the $20 bracket on up to very expensive. I'm sure the higher end ones have a lot of good stuff going for them but if I ...
1
vote
3answers
647 views

What does a megapixel designation on a lens actually mean?

I know that in a CMOS sensor the megapixels give you an idea of how many pixels are actually there to capture the light. In terms of a lens however, I cannot find any relation between the megapixels ...
2
votes
1answer
123 views

Lens cleaner got into my camera lens

I used some glass lens cleaner spray on my pretty old (but still good) Samsung PL20 earlier this morning. I just turned it on to take a photo, and found this... It looks like somehow some of the ...
1
vote
3answers
335 views

What is the sweet spot of the Canon's 18-55mm IS STM lens?

I'm plannning to photograph negative film like this. And I would like to know what would be the sweet spot of my lens to achieve best sharpness possible, what f stop and at what mm I should be ...
0
votes
3answers
148 views

Is my lens good for a tiger safari? [closed]

I have Nikon D5200 and Tamron SP AF 70-300mm F/4-5.6 Di VC. Is this lens good enough to cover shots?
0
votes
3answers
65 views

Alternative lenses for 450d basic 18-55mm lens [duplicate]

I have Canon EOS 450d camera that I bought about 7 years ago and till now I have shot for about 15k photos. Lately appeared problems taking shots and when I pushed the button, nothing happened. I ...
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votes
3answers
165 views

Will L glass lenses compared to what I have upgrade my overall Image Quality?

I currently shoot with a Canon T5i and plan on upgrading to either a 6D or 7D Mark II (another topic). To go with my new body, I want a new lens. I currently have the following: 10-18mm f4.5-5.6 IS ...
1
vote
2answers
222 views

Does Apple make its own lenses for iPhone cameras?

Does Apple make its own lenses for iPhone cameras? Or, does it at least design them? If not, does it source from a lens maker like Zeiss, or a camera maker like Canon?
1
vote
1answer
39 views

Which lenses can I use on my Sony Alpha 100? [duplicate]

I have a Sony Alpha 100 and I've bought an adapter M42 for it. I'd like to know, which lenses can I use on my Sony?
1
vote
1answer
171 views

Difference between Canon 18-135mm lenses

What is the difference between these two Canon lenses? Canon EF-S 18-135mm f/3.5-5.6 IS STM Canon EF-S 18-135mm f/3.5-5.6 IS
0
votes
1answer
104 views

Lens Focus Issues

I have been having focus issues with a Canon EF 24-70mm f/4L IS USM lens. It seems that it is unable to focus at infinity (or close to it)for most of the range between the wide and telephoto ends ...
3
votes
2answers
123 views

How do I choose a wide angle lens for my 700D?

I have Canon EOS 700D and want to buy a wide-angle lens. So far I was really impressed by the 10mm ones, however the ones with at least decent aperture comes without Image Stabilization. I also looked ...