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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0
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6answers
139 views

Buying a Nikon DSLR Camera body only, is a 35mm and 55-200mm lens enough for most cases?

New to photography using DSLR. I am planning to buying an entry level Nikon DSLR (perhaps the D3300). I read around and decided to buy the body only, excluding the kit lens. I have decided to go ...
1
vote
1answer
320 views

Where to get replacement black sticker for the front of a lens?

On a recent trip the filter threads came loose on my Nikon 18-200, and some of the screws that held it in place where caught in the black sticker that covers them. I peeled off the sticker, and ...
0
votes
1answer
74 views

Why is my Tamron 70-300mm lens limited to DX framing on Nikon D750?

I'm trying all of my lenses on my newly acquired D750. Among the lenses there is a Tamron 70-300 LD Di zoom lens. Everything works as expected, except one thing: the D750 limits the frame-size to DX ...
29
votes
10answers
65k views

Why does fungus form in lenses, and how to get rid of it?

Recently I was using an old Pentax 50mm f/2 that had a quite big green spot, and later I was informed that it was a fungus. A couple of questions raised from this: Why does fungus form inside the ...
2
votes
6answers
638 views

Which telephoto lens will be best for photographing bears in Alaska?

I have recently inherited some lenses from my granddad and am going on a trip to Alaska this summer. I want to take one general purpose lense for mountains and close things and one telephoto for ...
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
1k views

Which filters will fit Voigtlander 15mm?

I recently got myself Voigtlander Super Wide-Heliar 15mm/4.5 lens, which I enjoy shooting a lot. It has built-in lens hood with filter threads and manual says it's fitted with 52mm filter threads. I ...
3
votes
2answers
137 views

Circular Polarizing filter in different lenses. Whether to use adapters or buy new filters?

I have the following lenses Canon 18-55 (filter ring size 58mm) Canon 55-250 (filter ring size 58mm) Sigma 35mm (filter ring size 67mm) Canon 10-22 (filter ring size 77mm) Canon 50mm (filter ring size ...
1
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0answers
55 views

Difference of auto-focus motor?

What is the difference of ultrasonic motor, stepper motor, and electromagnetic drive? Which one of these are lens-based or screwdrive? What are the advantages of lens-based servo over screwdrive and ...
0
votes
1answer
76 views

Focus issues in a Nikon 24-70 f/2.8 lens

I have a Nikon 24-70mm f/2.8 (without VR) and the pictures taken with it are not sharp and crisp as I think they should be. I use it with a Nikon D7200 that works perfectly with a Nikon 70-200mm f/2.8 ...
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votes
3answers
92 views

What are all the types of lenses? [closed]

I see different types of lens in the market like prime, zoom, telephoto and macro. I'm not sure how many such types really exists and the functions/features of each. Can someone share an explanation ...
0
votes
1answer
36 views

How to repair/clean old lens?

There is an old Sigma lens for Nikon (about 20 years old) that gives a blurred image when viewed through. I don't find any smudges or spills on the surface of the lens or on the mirror. Why is this ...
0
votes
1answer
56 views

Build of SLR lens vs point-and-shoot lens [duplicate]

There are point-and-shoot cameras that offer large range of angle of view. For example, Nikon P900 with 24mm-2000mm. How such lenses exist only in point-and-shoot and too at a very low price? Why ...
-3
votes
1answer
82 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 ...
3
votes
3answers
176 views

How to photograph small aircraft interior?

I want to make a poster. Can you give some tips for getting a great shot of my aircraft instrument panel? How to filter it, light it, reduce reflections and glare from glass bezels? I have a Nikon ...
0
votes
3answers
93 views

21mm + 28mm combination for backpacking purposes, is it too close? [closed]

I have been doing a lot of backpacking recently, and the more I do, the more I feel the need to carry more focal lengths. One problem is that backpacking is never compatible with carrying more than a ...
1
vote
2answers
107 views

Suggestions for supporting a heavy lens?

I have just returned to photography after several years in the wilderness, and as such I have invested in some decent lenses straight off the bat this time round. My main telephoto lens has ended up ...
34
votes
4answers
62k views

What is back-focusing?

What is back-focusing? Is it something I need to be worried about, or can I just live with it? How can I tell if my camera/lens is sufferring from it?
0
votes
2answers
84 views

What is a good street photography lens for Nikon D750? [duplicate]

I've been using a 50mm ƒ/1.8 on my Nikon D750 for some months now, and I'm looking to upgrade the lens for a new experience. Which lens should I get next? I'm wanting to do street photography, just ...
16
votes
10answers
36k views

Which prime lens for Pentax APS-C?

My girlfriend is buying a Pentax K-5 (I already have a Pentax DSLR so we thought it made sense for us to be able to share lenses), and she's not sure about which lens to get with it, so I've been ...
1
vote
3answers
311 views

Old Sigma 18mm lens causes Err 01 on Canon DSLR

I've bought a Sigma 18MM 3.5F Ø72mm Autofocus for a Canon SLR. The thing is that I've got a Canon 40D so I made a mistake I think. The lens only works the aperture is set to f/3.5; any other aperture ...
2
votes
2answers
132 views

Canon EF-S 55-250mm f/4-5.6 IS II causes Err 01 only when zoomed beyond 135mm

I am getting the following error with my EF-S 55-250mm f/4-5.6 IS II lens only when I zoom it beyond 135mm: Err 01 Communications between the camera and lens is faulty. Clean the lens ...
0
votes
3answers
199 views

Why are crop lenses indicated with focal lengths they don't have [duplicate]

If we will use crop lenses only on crop bodies, why do we all crop lenses for example "10mm" when they are actually "16mm" (with a crop factor of 1.6 in this case)? Edit: I am familiar with the ...
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, ...
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votes
2answers
134 views

What lens should a traveller buy? [closed]

I am a traveller. I like taking walking tours and clicking pictures of people in the street. Once i developed a passion for photography, New York was the first place in visited. I used a 35 mm Nikon ...
1
vote
1answer
284 views

Pictures start in focus then go out of focus?

I was recently shooting some surf after a session with my 7d and Tamron 18-270MM F/3.5-6.3 Di II VC PZD. I started shooting while he was in focus, then as he got to the main part of the maneuver the ...
1
vote
1answer
102 views

Sigma 18-35 f/1.8 poor image quality

I recently bought for my D3300 two new lens. The Nikon 50mm f/1.8 and Sigma 18-35mm f/1.8 Art. As I expected, due to specifications and measurements in DXOMark, the 50mm lens is awesome. A lot more ...
0
votes
2answers
125 views

Are focus and noise problems I see with my Nikon D80 simply because newer cameras are better?

I can't seem to get photos with good focus or without noise. Is it the fault of the Nikon D80?I have read that cameras only two or three years old have much better light sensors and that that is what ...
21
votes
6answers
3k views

Is there a difference between taking a far shot on a 50mm lens and a close shot on a 35mm lens?

I am looking for a prime lens to pick up, and I'm wondering if there is any difference between 35mm and 50mm in terms of the end product if I just stand back more with the 50mm. I use the Sony a6000 ...
11
votes
4answers
2k views

Are there any Canon EF-S prime lenses or tele-zooms?

Canon is supposed to have introduced the EF-S system for the APS-C cameras to make smaller\lighter lenses and keep the costs low. However, most of their EF-S lenses are general purpose zooms in the ...
2
votes
1answer
352 views

Are mobile phone camera lenses good enough to support 20MP sensors?

With mobile phone cameras approaching 20 MP while maintaining small sensor sizes, pixels dimensions are typically around 1 μm or lower. What about the lenses? Are they good enough to produce an Airy ...
1
vote
3answers
71 views

When to use exposure delay?

I recently found an option "Exposure delay" to minimize vibration. But is it necessary to use when you have VR on the lens? And does it do anything "extra/meaningful" by using both the VR and Exposure ...
0
votes
2answers
150 views

What kind of lens defect is this spot on my lens?

I just bought a Xiaoyi (a cheap GoPro style POV camera made by Xiaomi), and after removing the protective lens sticker I found the lens to have a spot on/in it. It's either an air bubble or fungus, ...
0
votes
0answers
75 views

Safest way to transport a teleprime len(s) during backpacking and flying

Context So I have a Nikon 300mm f4 AF and may consider it's older but larger cousins the Nikon 400mm f3.5 or Nikon 600mm f5.6. I have a special pouch for the 300mm and it can easily fit in my ...
0
votes
3answers
291 views

Which lens/focal length offers the widest viewing angle without too noticable distortion/fish-eye-effect?

I am looking for a lens for my Sony Alpha 77 (APS-C), which gets me an as wide as possible viewing angle, but I also hate that fisheye effect one gets from using too low of a focal length. About where ...
3
votes
2answers
2k views

Samyang 14mm or Rokinon 8mm fisheye? Which is better for landscapes?

My camera body is a Canon 550D/T2i. Which one would be better for landscapes and why?
4
votes
2answers
1k views

Does wide angle equivalent in crop sensor skew image?

I see many posts on both this forum and elsewhere the discuss the use of a wide angle on a crop sensor. For example, they discuss how at 14mm lens is 14mm on a 35mm film or full frame, but with a ...
3
votes
1answer
434 views

Nikon 16-85 VR focus noise problem?

My 16-85 VR is doing some weird noise during focus, manual or auto. It's like an hiss. I asked in a local shop and they said it can be some microdust inside the lens. But I'm a little worried it can ...
12
votes
2answers
1k views

Does a crop sensor affect closest focusing distance? Why does it not affect focal length in EXIF data?

Since I am considering to buy the Nikkor 105mm micro VR, I wondered if the cropped sensor does affect the closest focusing distance of 0.31m? Thinking about this, the following additional (and ...
6
votes
2answers
165 views

How do lenses control “projection”?

How is a fisheye lens made differently from a normal ortholinear projection lens? How are real lenses acting differently from the ideal "thin lens" or pinhole, in terms of how the 3D scene in front ...
1
vote
5answers
133 views

Street photography with Canon 1200D

Recently I bought Canon 1200D with 18-55mm and 55-250mm lenses. I am interested in street photography. I would like to know which lens I should use. I don't want to buy a new one right now (maybe ...
153
votes
14answers
79k views

What do all those cryptic number and letter codes in a lens name mean?

Then looking at a lens name there is a lot of acronyms in the name describing it's features (often specific to the manufacturer). Examples, Nikon: Nikon AF-S DX 16-85mm VR f/3.5-5.6G IF-ED Nikon ...
0
votes
1answer
55 views

How to open a plastic enclosed lens assembly for repair

I have a lens assembly from a projector (150mm Kodak Retinar) which is fully enclosed in plastic. Apparently the lens fell down at one point and someone put it back together. However, that person ...
7
votes
5answers
3k views

Are third-party alternatives to the Canon 70-200 f/2.8 worth the price savings?

Has anyone used the 3rd party 70-200 lenses? Are you happy with the quality, or do you wish you had saved up for longer and got the Canon?
3
votes
3answers
326 views

What type of lens is best suited for adventure photography?

OK, so I really don't want to sound like an neophyte asking about which lens to buy, but I've done a fair amount of research and I'm really unsure which is the best route to take. I have a D5200 and ...
3
votes
4answers
270 views

What is the useful range of apertures for lenses?

Assuming for example a lens has a range of f/1.8 - f/22, for an ideal picture which apertures should I avoid, and for what specific reasons? Now if the answer is "do not use the first two and the last ...
4
votes
2answers
2k views

Why are there no full-frame lenses with leaf shutters?

I see that many medium format lenses are made with leaf shutters, which allow much faster flash syncing speeds, so why doesn't anyone put them in FF lenses?
50
votes
7answers
39k views

Why do pro photographers use huge lenses to take portrait shots?

Every time I see a photoshoot video on youtube, the photographers have the biggest lenses I have ever seen in my life to shoot portraits or full-body shots. For example, the Nikon 70-200 f/2.8 ...or ...
0
votes
3answers
143 views

Would an EF 24-105L or a 70-200 f/4L be a better travel choice?

I currently have a Canon 7D Mark II. I have a budget where I am looking at getting the Canon EF 24-105mm f/4L IS USM or the Canon EF 70-200mm f/4L IS USM. I am undecided on which one to get. I can see ...
0
votes
0answers
45 views

Undecided for my next lens! [duplicate]

I currently have a canon 7D mark ii. I have a budget where I will be looking to get the canon 24-105 f4 L IS or the canon 70-200mm f4 L IS. I am pretty undecided which one to get, I can see me using ...