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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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2
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3answers
205 views

Will a 18-140 lens be good for basketball stadium photographs? [closed]

I am absolutely new to photography and have just started learning the basics. I have got a Nikon D-610 with a 18-140 lens for now. I just want to know if I can take this to a basketball game and get ...
0
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2answers
473 views

Mounting Sigma 70-300mm 1:4-5.6 APO Macro Super on Nikon D3200

I have been given a Sigma 70-300mm 1:4-5.6 APO Macro Super lens and I want to fit it to my D3200. The problem is that the mount on the bottom of the Sigma lens is too big for the D3200 lens mount and ...
2
votes
3answers
2k views

Can I use a Pentax lens on a Canon body?

I have a SMC Pentax-M 50mm 1:2 prime lens and a Pentax MC auto 28mm 1:2.8 from my dad. I have been looking at two film cameras lately, the Pentax MG and the Canon AE-1. If I buy the Pentax MG I know I ...
1
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3answers
3k views

What to do when my camera says “lens error”?

I have a Canon PowerShot A3100IS digital camera. I was taking pictures but turned it off with the lens still open. I turned it back on, it loaded then made a beeping sound then a black screen came on ...
6
votes
8answers
33k views

What should I do about Canon PowerShot “Lens error, restart camera”?

I've had a Canon PowerShot A1100 IS camera for almost a year now. About a week ago, I went on a trip, took pictures the whole trip, everything was ok. When I got home, and tried to turn the camera ...
0
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0answers
113 views

What is the impact of changes between the old and new Nikon 18-300mm lens?

They are: Nikon AF-S DX NIKKOR 18-300mm f/3.5-6.3G ED VR Lens (new) Nikon AF-S DX NIKKOR 18-300mm f/3.5-5.6G ED VR Lens (old) As far as I can tell the only differences are: The old one has an ...
0
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2answers
139 views

Why are lens apertures usually 1.4, 1.8, 2.8, 4…? [duplicate]

Why are lens apertures usually of only certain sizes? 1.4, 1.8, 2.8 and so on. Why not 1.6, 2.5 or any other sizes?
19
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3answers
4k views

What makes a Carl Zeiss lens so special in a smartphone?

There are smartphones on the market that have a focus towards photography. Some are equipped with a Carl Zeiss lens. I have looked into Wikipedia, which tells me that they are a brand who produces ...
3
votes
3answers
433 views

Is lens focal length specified considering the effect of barrel distortion on field of view?

Given a Nikon 14mm f/2.8D ED AF Ultra Wide-Angle Nikkor Lens on a full-frame sensor, in theory the field of view is HFOV: 104° x VFOV: 81°. However this lens exhibits noticeable barrel distortion ...
1
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2answers
216 views

Will the petal-shaped “HB-45 II” lens hood work with my Nikkor 18-55mm?

I am going to buy a lens hood for my AF-S DX NIKKOR 18-55mm f/3.5-5.6G VR. I searched and I found out that the best lens hood is Nikon's HB-45 lens hood. However, I also found a newer version, the ...
3
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1answer
125 views

What are these green numbers on my Canonet’s aperture scale?

There are three green numbers on my Canonet QL19’s aperture scale: The numbers are 28, 20, and 14. What are those?
7
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4answers
1k views

Do I need other camera lenses if I have an 18-200mm or other super-zoom?

I wanted to ask that once you have purchased a lens of say 18-200mm, then is it required to purchase other lenses — say 24-70mm, 24-105mm, 18-105mm, 28-135mm,etc. Does 18-200mm lens satisfy all the ...
0
votes
2answers
89 views

Which alloys are used in the Canon EF 300mm f/2.8L?

Can anyone confirm that which alloys of magnesium and titanium are used by Canon for the construction of parts in the EF 300mm f/2.8L lens?
15
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6answers
25k views

How do I find the right size of filters for a lens?

I was looking to get a circular polarizing filter and an UV filter for my Canon 550D, 18-135mm lens. When I checked online I found these filters came in different sizes, like 62mm, 67mm, 72mm, 77mm. ...
3
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3answers
3k views

Recommended wildlife photography lenses for Nikon DX bodies with no AF motor

I have some SLR experience but have mostly been using a point-and-shoot in the last few years. Now I would like to jump back into the digital SLR world specifically to do wildlife photography (mostly ...
2
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2answers
94 views

What is difference between Canon EF-S 18-55 mm IS and EF-S 18-55 mm IS II lenses?

What are physical differences between both to spot on the sight? Other than that, what are technical differences?
0
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1answer
121 views

Nikon Lens - Stopping down causes over exposure in Aperture Priority mode

I just got a used Nikon 300mm f/4 AF (the older, non-AF-S version), and unmounted, when set to f/4, the aperture blades are still slightly visible (you can push the aperture lever on the lens a bit to ...
7
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6answers
272 views

Is it technically possible to build a camera body to correct for lens defects?

Most lenses tend to be expensive because the lens needs to be very complicated in order to correct for various optical effects (aberration, etc). Is it possible to build a sensor and processor ...
2
votes
1answer
257 views

Nikon D3200 does not recognize the Nikkor AF-S 50mm 1.8G

I bought a new Nikkor 50mm AF-S 1.8G to add to my Nikon D3200, however, it will not recognize the lens. It says "Lens Not Attached" in all modes with error "NON CPU lenses can only be used in manual ...
11
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8answers
5k views

Would the 40mm pancake or 50mm prime be better for street photography with a Canon APS-C camera?

I have a Canon EOS 600D, and I already have 18-55mm,55-250mm. I plan to buy a new lens for street photography. I already have picked out one of the following lenses: 40mm STM(pan cake). EF 50mm ...
6
votes
3answers
4k views

How do I make a package look “heroic and important” in a advertising shoot?

I've been given the following assignment, and unsure what to do with it. An advertising agency has hired you to photograph individual "pack shots" of a range of packet soups. The soups come in ...
7
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5answers
3k views

Does a “body-only” DSLR need a lens added before use?

What does it mean for a DSLR camera to be described as "body-only"? I found one advertised for sale that was described as such, and I don't know if I'll need to add a lens. I assume that it means ...
0
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0answers
53 views

Nikon zoom lens troubleshooting

My Nikon D5100 squeals and won't photogragh on its 55-300mm lens beyond 80mm. I've tried turning autofocus on, taken out & reinserted battery, and changed memory cards.
5
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1answer
247 views

Aerial Camera Ground Footprint Calculation

I have a very simple math problem, but I cannot seem to figure it out. I need to calculate what portion of the ground will be visible when viewed from a UAV mounted camera. I believe I have it solved ...
1
vote
1answer
50 views

What should I buy? (new body vs. lens) [duplicate]

Right now I have a Nikon D3100, a Sigma 50mm f1.4 (older version). Right now I have almost 1300$. What do you think I should buy? I'm hesitating between the Nikon D7100 or buying a Sigma 35mm f1.4 ...
12
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5answers
3k views

What is a normal lens?

I've heard people call 50mm lenses "normal lenses". For a lens to be considered normal, does it have to be exactly 50mm or is there some leeway? Does the normal focal length depend on crop factor of ...
0
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2answers
130 views

What is difference between a 18-55mm and 18-105mm lens? [duplicate]

So what I meant to say is that what exactly is the difference between 18-55mm lens (in general, not specific to any company) and a 18-105mm lens. To me 18-105mm lens looks much better (not considering ...
0
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0answers
39 views

Beginner Astrophotography [duplicate]

I'm very new to this field and any helpful suggestions would be very much appreciated. I have acquired from a friend a Nikon D7000 and the standard 18-55mm kit lens, but can you suggest a lens or ...
27
votes
4answers
11k views

What is a macro lens?

I've read a few threads on here that mention some elementary descriptions of macro lenses and found some marketing fluff in the box for my Canon about them as well, but being a complete novice I was ...
2
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1answer
184 views

What are the sales volumes of 50/1.4 and 50/1.8 lenses?

Not a very interesting question in and of itself, but I'd like to get some numbers to use in a following question.
5
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3answers
203 views

How to fix chromatic aberration with free software?

Here is a zoomed-in example of an image I shot that has a bit of discoloration due to the chromatic aberration of the lens. What's the easiest way to fix this problem using only free software such ...
1
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4answers
215 views

What to gain from using a Nikkor AF-S 85mm f/1.8G instead of a AF-S Nikkor 35mm 1.8G

After debating the old age 50mm vs 35mm, I have opted to go for a 35mm. I have a Nikon D3200 with a Youngno Flash, and just acquired a SB-600. I shoot two things: clubs/nightlife and weddings as a ...
2
votes
1answer
64 views

What is the difference between Reversing Ring and Reverse Protect Ring? [duplicate]

I want buy a Macro Reversing Ring for Macro shot but then I can't protect the lens with a filter. Can I use Reverse Protect Ring for lens filter (like UV filer) or lens Cap?
0
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2answers
108 views

Fungus cleaning from a Nikon superzoom

Happened to be a proud owner of Nikon Coolpix P600 till I discovered that ugly fungus on its lens! Contacted the Nikon India service centre at Kolkata and they said that there is no option of cleaning ...
2
votes
1answer
67 views

Lightroom: how to insert Lens data to many photos at once?

I'm shooting with a manual Rokinon 8mm Fisheye lens. Photos do not contain data from it, such as aperture and lens maker. Now i'm using the plugin LensTagger to mass batch edit files to add the ...
4
votes
2answers
649 views

Why are large zoom ratio constant apertures lenses not generally available?

I know about 17-55 f2.8 and the likes of it, but I am talking about something say 18-135 f2.8. There exists 70-200mm f2.8 and the range (200-70 = 130mm) is much bigger than in 18-135. I am aware of ...
2
votes
1answer
44 views

Does Sony DT 18-135mm SAM lens has Full-time Manual focus feature

I checked it in Len user-manual but Sony didn't mention about Full-time manual feature. I also checked it on Sony website but I didn't find any resources too. Does anyone know the Len has Full-time ...
4
votes
1answer
119 views

What do lens distortion data values a, b and c actually mean?

I've recently been looking at lens distortion correction solutions, and I just wonder what the values a, b and c actually mean. (I'm using Hugin/lensfun, I don't know if these are standard values or ...
5
votes
2answers
207 views

How do zoom, magnification, and focal length relate?

Zoom lenses and cameras with superzooms are often sold with a times ("×") zoom number — like a 12x zoom or 30x zoom. The question How do I convert lens focal length (mm) to x-times optical zoom? ...
10
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6answers
4k views

Will a lens with a low aperture value give me better portrait photos?

I want to take pictures of people from 5-20 feet away. I attend lots of group events and am free to walk around and snap photos. I just purchased a Canon t3i and it comes with a 18-55mm kit lens. The ...
3
votes
4answers
1k views

Why Isn't This Photograph Pin Sharp?

I Have Been Trying Out My New Canon EF 24-70mm and I'm pretty underwhelmed by its sharpness. Here is a RAW file shot from a solid tripod on an (almost) windless day using a remote. Obviously it ...
4
votes
4answers
571 views

What type of lens should I get for an air show?

I went to an air show yesterday, I took a few nice pictures of the Red arrows which is great, but they look so far away, even smaller than by eye. I've got a Nikon D3000 with the kit lens. What type ...
1
vote
0answers
85 views

Can I fix a M42 50mm lens myself?

I've been using the Pentacon 50mm f1.8 with pleasure on my Canon 550D with the help of a M42 to EOS adapter. Some weeks ago however the lens housing got damaged in my luggage such that turning the ...
8
votes
3answers
685 views

What is a pump zoom lens?

While browsing for cheap second hand lenses I found the Cosina 70-210mm f4.5-5.6. The seller notes that it's a pump zoom. Googling the term does yield some results, but these simply state that a ...
0
votes
0answers
57 views

Nikon Lens Types. What is AF, AF-S, D, G mean? [duplicate]

What do these lens types denote. I have seen similar questions, but they don't have the answer I'm looking for. I have a Nikon D5200. It does not have a focus motor in the camera, so it relies on the ...
0
votes
1answer
79 views

What's the best lens for shooting baby's and children? [duplicate]

I have a Nikon D5000 I was wondering what is a good lens for taking baby and children portraits
10
votes
3answers
738 views

What's the best bang for your buck to improve low light portrait shots: Lens, Flash or Body?

I want to get better action shots in low light indoor conditions. I've got a Canon T1i (APS-C size) with 3.5-5.6 18-55mm lens, and am thinking about a flash upgrade, a lens upgrade, and/or body ...
2
votes
3answers
154 views

What is the difference between the Canon EF 14mm f/2.8L USM and 14mm f/2.8L II USM?

Sorry if my question seems a bit naive. I was wondering what is the main difference between the Canon EF 14mm f/2,8 L USM and the Canon EF 14mm f/2,8 L II USM ? And correct me if I'm wrong, but ...
0
votes
2answers
116 views

How to lock aperture using Reverse ring with Canon 600D?

Is there anyone using reverse ring and know how to lock the aperture. I tried doing the techniques provided on youtube. First connecting the lens on original positions then lock the aperture by ...
1
vote
4answers
227 views

Why does crop factor apply with APS-C lenses, and why aren't these brighter than FF ones at same aperture?

I know that the image circle of FF-lenses is bigger than it needs to be on APS-C sensors, thus the FOV spears narrower. I've heard that APS-C lenses sit closer to the sensor, thus projecting a smaller ...