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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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10 views

Computing the FOV of a light field captured by a lytro camera

Hello dear photographers! I have captured some light fields with a lytro camera (1st generation) and loaded into matlab. I want do do some calculations on the light field, but I have found out that ...
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5answers
228 views

Is it worth getting a zoom lens which overlaps with lenses I already have?

I want your experience in choosing a new lens. I already have a couple of lenses with focal lengths as follows: 18-55mm, 70-300mm (MF), and 55-300mm (AF) - regardless the 18-55mm. All my zoom ...
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0answers
35 views

zoom lens for Baseball games [duplicate]

What zoom lens would you recommend for baseball games? I just bought a Canon SL1 and am not sure what lens size would be best. The camera came with the 18-55 zoom lens. I've looked at 55-250 lenses ...
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2answers
102 views

85mm fast prime vs 70-200mm 2.8 for indoor fashion studio shoots

Why do people shooting fashion inside a controlled environment (studio, when shooting apertures above f/2.8, like f/8, f/11), seem to prefer a 85mm fast prime versus a 70-200 f/2.8 for half and ...
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1answer
33 views

what lense would be perfect and have 2.8f in low range [on hold]

I have nikon d7000. what if I go for 3rd party lense like sigma or temron does it effect on it?
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1answer
43 views

Nikon 50mm 1.8g vs 1.8d? [duplicate]

What are some pros and cons of each? I use a Nikon D600 and am looking for my 50mm. I shoot a lot of video, so a smooth manual control is important to me. Besides that, I am unsure of what exactly I ...
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4answers
184 views

What kind of lenses will work with my new Nikon DSLR?

Ok so I just bought Nikon D3200, kinda loving it, kinda not. What kind of lenses do I need for it? What does the lens need to say on it or on the description for it to work properly with this camera?
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3answers
125 views

How can I get a 12ft wide field of view at 3ft distance?

Is it possible to get 12ft wide image from a 3ft distance? I am a beginner and have very little knowledge on the field of view of cameras. I calculated that a Go Pro would need a lens with 1.5mm ...
2
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7answers
838 views

Why are fixed-aperture lenses not more popular?

Lenses come in different varieties: zoom and prime, different focal lengths, different zoom ranges, with and without optical stabilization, and so forth. Why don't we have fixed-aperture lenses for ...
4
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1answer
144 views

Why do lens manufacturers produce lenses with few aperture blades?

A lot of lenses have very few aperture blades (especially budget lenses). A large number of aperture blades can make a real difference to the bokeh and seems like it should be a priority for the lens ...
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2answers
99 views

What does the built-in AE Chip for Nikon do on a Rokinon lens?

I'm looking at 14mm Rokinon f1.8 lenses for astrophotography. I keep seeing the Built-in AE Chip for Nikon. What does the chip do? I realize I have to use manual focus and actually everything manual. ...
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3answers
3k views

What does “R” mean in Fujifilm's XF Fujinon lens names?

Fujifilm currently makes three lenses for their new X-Pro1 mirrorless camera system: Fujinon XF18mmF2 R Fujinon XF35mmF1.4 R Fujinon XF60mmF2.4 R Macro "Fujinon" is Fujifilm's lens division. The ...
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4answers
11k views

What's the difference between using a 50mm f/1.8G and a 50mm f/1.8D with a Nikon D80?

Recently, Nikon announced their new 50mm f/1.8G lens, as revamp of the old 50mm f/1.8D. Here's how Gizmodo describes the difference: The main difference between this new "nifty fifty" and the ...
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6answers
3k views

Can a smaller sensor's “crop factor” be used to calculate the exact increase in depth of field?

If APS-C and similar crop-sensor digital cameras have a focal length multiplying effect such that a 50mm lens has an apparent focal length closer to the field of view of an 80mm on a full frame ...
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2answers
68 views

How does “designed for APS-C” affect focal length? [duplicate]

If a lens is designated by manufacturer as "designed for crop sensor" (i.e. DC in Sigma, DX in Nikon, DT in Sony), how would that affect the calculation of practical focal length (equivalent focal ...
2
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4answers
2k views

How can I fix Err 01 with a film-era Sigma lens on a Canon DSLR?

I have a new Canon EOS Kiss camera and a friend of mine has a Sigma Aspherical IF 28-200mm lens she used on an old Canon EOS film camera (old as in 10 years or so). I tried using the lens on my ...
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5answers
3k views

Why do Canon EF and EF-S lenses exhibit the same crop factor?

I have a Canon 7D, which has a crop factor of 1.6x. When using a Canon EF-S lens I get the focal length stated on the lens, when using a Canon EF lens I get the focal length times 1.6 when used on ...
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2answers
114 views

Can Tamron 16-300mm Macro Lens fit to Canon EOS 600D?

I use Canon EOS 600D and I want a lens with a larger range. I found out Tamron 16-300 f/3.5-6.3 Di II VC PZD Macro Lens, I addded it into my wishlist. I do some research for it and I'm scared that it ...
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1answer
45 views

automatically change my aperture for my lens sigma 24-70 f:2.8 [closed]

I used sigma 24-70mm f:2.8 with Canon 6d I have problem in between clicking of shots. in first shot no problem in second shot picture result is dark as compare with first shot in 3rd 4th pictures ...
132
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3answers
52k 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 ...
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1answer
952 views

What makes the Zeiss Otus 1.4/55 so special?

The new Zeiss Otus 55mm f/1.4 is nearly $4000. With faster lenses from Canon (50mm f/1.2L) with autofocus, why is the zeiss lens more than twice that of the Canon counterpart?
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3answers
5k 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 ...
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26 views

Tamron's 18-200mm or Nikon's 18-55mm + 55-200mm? [closed]

I'm going to buy my first DSLR(D5300) + Lens but while doing some research online, I found this kit lens combo --> Nikon's 18-55mm + 55-200mm VR -- but then I saw this tamron's lens Tamron 18-200mm ...
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2answers
99 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 ...
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1answer
32 views

How can I set the aperture in A mode with a D lens on my Nikon D90?

I use Nikon 35mm f/2d lense on my Nikon D90 but I am unable to change aperture of lens. I have the aperture on the lens set to f22 and locked, I can change aperture with the buttons and the change is ...
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1answer
37 views

What order to use range extending tubes in and the effect on aperture

I have a 500mm mirror lens, at f/8. I have 2 hollow tubes (their order wont matter) and 1 tube which is a "Vario converter" and can be rotated from 2x to 3x (this moves a lens about 1cm along) I ...
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2answers
136 views

What are the downsides of converting FD(n) lenses to EF mount?

Are there any downsides of converting an old FD(n) lens to the EF by means of actually replacing the mount with a EdMika or similar? The lens will become a manual focus and manual aperture control ...
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1answer
76 views

Will any EF-lens fit on a EOS film camera?

I'm not sure if this already has been asked... Also, it's probably a stupid question. I have a Canon EOS 1000 film camera, which has an EF-mount. I want to use the Canon 50mm f/1.8 II lens, but I'm ...
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0answers
77 views

How weatherproof is an average modern lens? [duplicate]

I recently bought the Panasonic GH4, which is weather-sealed. I also got the 14-140mm lens that Panasonic makes for it (I believe it's the first version and they have a new version - mine is this ...
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6answers
13k views

Can I use old Minolta AF lenses on my new Canon?

I just recently bought my first DSLR, a Canon Rebel t2i/550d. I use it mostly for video and it works wonderfully. I bought the kit lens with it, but I am looking to expand my lens collection. I found ...
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1answer
422 views

What are these blue/purple spots visible underneath the front element of my lens?

I just saw these blue/purple spots underneath my lens (attached here). This is a Nikon D90 which has the Nikkor 18-105 mm lens mounted on it. I haven't used it for maybe 2 months now, and I kept it ...
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3answers
331 views

Why is my zoom lens blurry at focal range past 100mm?

I recently purchased a used Canon 55-250mm IS lens and it works nicely at 55mm(even with lower shutter speed, and f/4 aperture), but turns out quite blurry at longer focal lengths, even with a shutter ...
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1answer
62 views

Which Low light zoom lens with image stabilization for DSLR [closed]

Recently started doing some DSLR videos for a website. For testing purposes I got a t5i with Sigma 50mm 1.4F lens. Most videos are in low-light settings. I've been using a tripod and it's worked ...
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3answers
671 views

Wide Angle Lens recommendation for canon 70D (cropped sensor camera) [closed]

I am interested in landscape and have a 40mm f/2.8 pancake lens but finding it does not capture enough and would like to purchase a Wide Angle lens. I am find ing the prices for the Canons too much ...
2
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1answer
243 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 ...
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5answers
2k views

How can I get maximum DoF with no distance markers?

I am aware of what hyperfocal distance is and the general principles behind it. However, most of the tutorials I have seen and read regarding it make use of lenses with focus distance indicators. ...
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4answers
4k views

Are there any good pancake lenses for Canon EOS DSLRs?

I've always liked the thought of having a super-thin ("pancake") lens for my Canon DSLR, for when I just want to take my camera out with as little bulk as possible. I'm not even too concerned about ...
2
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2answers
153 views

What do resolution figures mean in lens specifications?

I'm working in computer vision and choosing the right lens is obviously as critical as having a good sensor if you're going for quality inspection (for example). Sadly I have very little experience ...
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2answers
57 views

What extender can I use with the Canon TS 24mm?

Is there an extender for the Canon TS 24mm? I heard it is possible to make it a 45mm but I can't find much information on the web.
2
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4answers
339 views

What kind of lens is typically used for these type of night street shots?

I've been trying to duplicate the depth of field like in these photos on snowy nights and I'm not getting comparable results. I'm using a 35mm prime lens at f/1.8 on a D3100. So my question is: Are ...
6
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1answer
1k views

Is image stabilization a necessary feature for wide angle lenses?

I am considering buying a 24-70mm lens, and among third-party lens makers, Tamron makes a 24-70 f/2.8 with optical image stabilization (vibration control, in Tamron's terminology). Is it really ...
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0answers
22 views

18-200 lens vs. 18-55, 55-250 and 17-300 for sale, what would be the benefits of one of these vs what I have? [duplicate]

I have a Canon 50d with an 18-200 lens, I use it mostly to take photos of my kids, on auto. I have an aquaintance that is selling an 18-55, a 55-250, and a 17-300. Will I be getting far better photos ...
5
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3answers
309 views

How do I separate a stuck Nikon 400mm f/2.8 AF-S (non-VR) lens from a D800E body?

I purchased a factory refurbished 400mm f/2.8 AF-S (non-VR) lens a year ago from Nikon USA. Two major malfunctions happened. To me, both seem to be related to a little metal lever inside the lens's ...
2
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4answers
627 views

Is the angle of view actually different on APS-C?

A 50mm prime lens, whether APS-C or Full-frame is designed around the 35mm format. As such, is the angle of view actually different on a DX/APS-C crop sensor or are we just seeing less of the full ...
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2answers
134 views

Will a Vivitar lens work with my Nikon camera?

I am new to photography and have a Nikon D3200. A friend has given me a Vivitar lens: 75-205mm macro focusing zoom, NO. 220441876. Can I purchase an adapter to make this work? If so, which one? I ...
4
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1answer
474 views

How can I fix a Nikon DX 18-135mm with an aperture stuck open?

I am currently on a trip and I brought an 18-135mm lens and a 35mm prime as my two lenses for the trip. When I took my zoom out of my backpack off the plane and put it on my camera, I immediately ...
2
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2answers
160 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.
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12answers
3k views

Is it lenses which make your photographs, not camera bodies?

I read somewhere on this site itself that you should spend more on your lenses and less on your camera bodies. Is it a myth or a fact that mostly it is the lenses which make your photographs not the ...
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2answers
203 views

Rodenstock XR-Heligon 50mm 0.75 Lens

I found this crazy lens on ebay: Rodenstock XR-Heligon 50mm 0.75 Lens (here an example: ...
3
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3answers
453 views

What can I do when autofocus suddenly starts blocking at around 2m on a Nikkor AF-S 28-70mm 1:2.8 D?

I had this lens for quite a few years now, it used to work as expected. I didn't use my stuff for a few months, maybe 6-8 months. I just bought a D600 and tried to use them. The AF does not work as it ...