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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.

learn more… | top users | synonyms (1)

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4answers
104 views

How do I take a “projector output” photo, showing the beam from my car's headlights?

Auto enthusiasts have a thing called a "Projector Output" photo, and its samples are something like this: mostly lights of the cars on a wall at night: And here is a sample shot I did: At full ...
0
votes
2answers
160 views

So my iPhone 6 camera lens is as wide as my full frame 35mm DSLR lens?

I am trying to understand what is the deal with "full-frame" and what difference it makes, so did a silly test: I sat at my bed and aligned the iPhone 6 camera with the door of the room and took a ...
29
votes
4answers
5k views

Do professionals really never use a 24-70 lens?

I was reading lens reviews on the Rockwell site — mostly because it came up as first result in Google search — and he was saying professionals don't need and don't use mid-range zoom lenses like 24-70 ...
0
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0answers
39 views

what qualities should I be looking for in a long range lens [duplicate]

I am trying to get a long range lens for taking pictures of animals. I have read many questions and realize I need at least a 300 mm and I know they all depend on price...I'm not to go crazy with ...
1
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1answer
46 views

General guidelines on choosing a lens for an image sensor [on hold]

Not sure if this is the right place to ask this question, but here it is: I am trying to get up and running a VGA image sensor: 2755um x 2050um image area with 4.2um x 4.2um pixels and 640x480 ...
1
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0answers
56 views

Where is the focal point of a camera lens? [duplicate]

If the distance between the center of the lens and the film is called Focal length, does that mean the focal point of the camera lens is located on the film?
2
votes
4answers
99 views

What should I look for in lenses for long range and close up animal and natural shots?

I am looking at trying to buy a long range lens for shooting animals and nature. I'm kinda new to photography and am not sure which brand or size I should be looking for. What features are important ...
13
votes
4answers
3k views

Why does a small change in focal length of two lenses make a $1000.00 difference in the price?

I was looking at some lenses and the famous 24-70mm f/2.8G ED AF-S Nikkor Wide Angle Zoom Lens is almost $2000.00. Then, I also found this one: Nikon 28-70mm f/2.8D ED-IF AF-S Zoom Nikkor Lens and ...
-1
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0answers
59 views

Which lens for canon 600D for 55-250mm? [on hold]

I have recently purchaced a canon 600D and would like to buy a 55-250mm lens... what is best and what is the difference between EF and EF-S? how do I know it will fit and work with my camera? Thanks
0
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0answers
38 views

Are there any hardshell covers / protectors for lenses?

I'm a concert photographer, and I tend to end up in mosh pits quite a bit. I've mastered the art of shielding my camera from fists and beers, but I have been starting to see some wear and tear. Are ...
2
votes
2answers
140 views

Which lens for a milky way photo

I have a Nikon D7000 and don't know whether my 50mm 1.4 or 17-55m 2.8 lens would be better. I was automatically going to go with the 50mm lens, but then I was reading up on how I can use a longer ...
1
vote
1answer
66 views

What critereas to consider to match cameras and lenses for shooting people at parties?

I normally don't like shooting people that much, because I like to experiment with settings, lenses etc. to get a result that I like, so it helps when the subject doesn't move (Mountains and buildings ...
-3
votes
0answers
47 views

I need to update my whole gear and I have a lot of questions [closed]

my name is Luan, I'm a 19 years old Brazilian. My current gear is merely a Canon 1100D (Rebel T3) and the kit lens, a ISless 18-55mm. I want to buy a new short lens, a new long one, and I want to ...
3
votes
3answers
458 views

What can cause blurry and out of focus images on a Nikon D5300 in no flash mode?

I am using a Nikon D5300 with 18mm-300mm lens. My problem is that the camera is not working properly in "No flash" mode - in all other modes it's working well. Mostly I am using manual settings, but ...
0
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0answers
50 views

Samsung NX1000 focus ring does not work, can't get off manual focus mode either

I bought a used Samsung NX1000 last night, everything is great but it's stuck on Manual Focus mode. The Single Auto-Focus [SAF] and Continuous Auto-Focus [CAF] are greyed out no matter what I try. ...
1
vote
2answers
48 views

D90 and lenses upgrade [closed]

I have a Nikon D90 and currently use the following lenses: Nikon 70-300mm VR Ed IF Nikon 55-200mm DX AFS Nikon 18-55mm DX Sigma 70-300mm APO Macro My question, is the Nikon 55-200mm unnecessary ...
4
votes
2answers
354 views

How durable are zoom lenses?

I've heard that zoom lenses after some intensive usage become "sticky" and difficult to operate. What's the aproximate durability for a zoom lens like a Canon EF-S 18-135, shooting ca. 1000 - 2000 ...
1
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0answers
36 views

Lens adaptors for a 30mm ring size wearable camera. with either 4x 8x or 12x fixed power

I have what is called a wearable camera. I am looking to improve and enhance my view as a better live eye look, rather than the distant view all wearable's have in today's market. The camera has a ...
0
votes
2answers
73 views

Valid value for shutter speed based on Focal Length [duplicate]

I was listening to Ben Long videos and he was saying a safe value for shutter speed is 1/focal length So if I have a 35mm prime 1.8 lens, does that mean 1/35 = 0.02 so in my camera panel do the values ...
5
votes
2answers
164 views

What is the purpose of the little metal cylinder the focus ring of certain FD lenses?

On certain Canon FD-lenses (for example the 50mm f/1.8 S.C.) there is a small metal cylinder sticking out of the focus ring (not the button on the aperture ring). What is the purpose of it?
0
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1answer
39 views

Canon DSLR T5 Lens Compatibility [duplicate]

Can anyone tell me if my Canon EF lenses can be used on a Canon Rebel t5(1200D)
2
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2answers
98 views

Using Rokinon 14mm or Tamaron 17-50mm as a general purpose lens (APS-C)?

I dropped my Sigma 18-250mm in the river and now looking for ways to replace it. I am using T4i, and have, Canon 50mm f/1.8 Canon 75-300 (Garbage w/o IS :/) I use the camera mainly on my trips to ...
2
votes
2answers
287 views

I don't see the hole in the lens getting bigger or smaller, so is it damaged?

Just started learning photography and ordered a 35mm f1.8G ED Nikon lens. I understand it is a prime lens, and doesn't zoom in or out, but the f number there doesn't show any change from 1.8 when I ...
0
votes
2answers
119 views

Deciding between two lenses [closed]

With my budget and as it is my first lens and DSLR camera ever, I am looking at these two: Nikon 35mm f/1.8G ED AF-S FX NIKKOR Lens and Nikon 24-85mm f/3.5-4.5G ED VR AF-S for my D-610 camera. ...
3
votes
0answers
68 views

Diagnose a damaged lens from focus test results

I have a lens that gives perfectly decent results at f/22 and f/32. Here's its capture of an ISO 12233 test chart: It's not the sharpest lens I own, but whaddaya want, it's a quarter century old ...
2
votes
3answers
204 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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0answers
109 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
votes
2answers
138 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?
3
votes
1answer
124 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?
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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?
2
votes
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
votes
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 ...
0
votes
0answers
52 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.
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 ...
5
votes
1answer
241 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 ...
0
votes
2answers
122 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 ...
7
votes
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
votes
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 ...
5
votes
3answers
200 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 ...
2
votes
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.
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?
1
vote
4answers
211 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 ...
1
vote
2answers
70 views

Nikon D3000 70-300 Nikon lens - How to get lens converter off the lens?

I put a Vivitar tele converter on my 70-300 lens. It went on easy but wont come off. How do I get the thing to come off my lens? I have a Nikon D3000 camera.
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 ...
2
votes
1answer
242 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 ...
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 ...
0
votes
2answers
106 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 ...
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 ...
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 ...
1
vote
0answers
83 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 ...