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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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3
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1answer
181 views

Where to fix Canon lens, other than Canon?

I have a 70-200 2.8L II lens that was broken on a photoshoot (dropped 1 ft). The glass is intact (thank you, UV filter) but there is some issue inside the lens where the images aren't focused and the ...
3
votes
1answer
176 views

Are wide angle adapters bad?

I would like to get wider angle photos than my current setup of min 18mm APS-C allows, but decent wide angle lenses (for Sony with 10-14mm focal length) cost 300+€. I stumbled upon these wide angle ...
2
votes
2answers
288 views

Is it bad to use old lenses on a new camera?

Ever since I started out with photography, I've been using an old, used Sony Alpha 200 DSLR. I was mostly okay with its mediocre performance, but lately my demands have increased, and I would like ...
7
votes
3answers
398 views

I accidentally refrigerated my lens for a month. Should I be worried?

When preparing for a hike, I ended up putting my whole backpack in the fridge to cool the water in the Camelbak inside of it. The hike was canceled, and I'm the kind of guy that doesn't really care ...
35
votes
5answers
94k views

How do I convert lens focal length (mm) to x-times optical zoom?

What is the rule to convert the 'mm' notation to the 'optical zoom' notation? I searched a bit and found this one: optical zoom = maximum focal length / minimum focal length For example a 18-55mm ...
40
votes
9answers
89k views

What can be done using a 18-55mm lens?

I have a Canon EOS 1000D with 18-55mm kit lens (entry level, as many say). Whenever I go out for a shoot, I always end up feeling handicapped because of the limited zoom range. Most of my friends ...
1
vote
1answer
52 views

Understanding Lenses and the Focal length and Distance of Shooting [duplicate]

Suppose i want to make a Picture of a Tiger,in the National park or in wild life safari,and to fill in the Frame with my Aps-c Eos Camera with Focal Length at 300mm,how close or far i need to ...
0
votes
1answer
88 views

Why does the use of multiple filters create vignetting?

Recently I have had vignetting problem with my Sigma 18-200mm f/3.5-6.3 DC OS HSM (72mm) After checking, it is specified in the manual that one should not use multiple filters or thick filter (as ...
1
vote
2answers
6k views

Canon Zoom lenses: 18-135 STM vs 18-200 vs. 17-85

In my quest to buy a new camera, My local store has three bundles, that each comes with one of the three lenses mentioned in the title. I'm having a hard time deciding between the three as they all ...
0
votes
0answers
42 views

Missing Grommet on lens that secures lens cover

I have a Canon Power Shot SX500 IS with a Canon Zoom Lens 30 x IS. The grommet located in the inside lip at end of the lens fell out and was lost. It secures the lens cover when in use. Where can I ...
4
votes
2answers
120 views

Understanding Lenses Focal Length with Converters

I read about APS-C sensors EOS DSLRs, that if the focal length is 300mm and as the image ratio is 1.6 then the 300mm x1.6 = 480mm focal length. So if I add a 1.4x teleconverter to 300mm lens so I ...
2
votes
4answers
134 views

Should lenses of equal quality for smaller sensors be cheaper?

In theory do we expect lenses of identical specs and quality to be cheaper when designed for smaller sensors? My expectation is that the answer is yes, because all of the things that lenses struggle ...
0
votes
1answer
304 views

Which of my lenses to choose for shooting the Milky Way? 17mm 2.8 or 10mm 4.5?

Next week I hope to get a good chance to do my first Milky Way shoot. Last thing I struggle with is which of my lenses to use. I want to avoid startrails. In the final round are: Sigma 17-50 2.8 ...
0
votes
3answers
103 views

Can I use my Olympus E-10 lenses on my Canon T3i?

I just bought a Canon Rebel T3i but would like to also use my Wide angle, Micro,Macro and telephoto lenses from my Olympus E-10, Is it just a matter of a step ring from 58mm to 62mm?
0
votes
3answers
267 views

Upgrading from Canon T2i to Canon 6D

I want to upgrade my camera from Canon t2i to Canon 6D, Can I use the same lenses i already have ??? Lenses I own are, Canon 58mm Canon 75-300mm f/4.0-5.6 III AF Canon-EF 50mm f/1.8 II Rokinon ...
18
votes
3answers
18k views

What is the difference between Canon “L” lenses and non-L lenses?

The Canon L lenses are much more expensive and presumably much better quality than non-L lenses. What makes an "L" lens? How much better are they over a similar length/speed "ordinary" canon lenses?
2
votes
3answers
1k views

What does “maximum aperture” mean in a camera spec? Where can I get the full aperture range?

I own a Canon S95, and am considering getting a newer model (e.g. Canon S110 or S120), and I'm comparing the specs. According to DPReview.com, the S95 has a maximum aperture of F2.0-F4.9, and the S110 ...
1
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4answers
1k views

Does sensor size affect lens distortion?

There was recently a video posted about how different focal lengths affect portrait photography, specifically how distortion at smaller focal lengths have more distortion and are less flattering. So ...
0
votes
0answers
50 views

What kind of chromatic correction has the Pentax M 50mm f/1.7

http://www.kenrockwell.com/pentax/35mm/lenses/50mm-f17-smc-m.htm After the chromatic aberrations that I observe, it could be an achromat.
0
votes
1answer
112 views

Low light when using Macro Reversing Ring

I just purchased Macro Reversing Ring for my Nikon d5100(18-55lens), but I observed that whenevever I try to use it I am getting very dark images, They are so dark that I cannot capture them without ...
1
vote
4answers
303 views

How do old lenses get dented just on the filter ring?

I often see old Nikkor lenses for sale that have one deformation on the lens barrel, at the level of the filter. The focusing barrel is intact, the rest of the lens is in good condition, the glass is ...
1
vote
2answers
175 views

How does Rokinon 24mm f/1.4 image quality compare between f/1.4 and stopped-down to f/4?

I have a Rokinon 14mm f/2.8 lens that I use as my go to for dark sky imaging with my full frame camera and it is amazing. However, I just bought a Rokinon 24mm f/1.4 lens for my crop sensor camera so ...
2
votes
3answers
18k views

How do I choose between 24-70 f/4 and 24-105 f/4 Canon lens?

I am getting a new medium range zoom lens for general use and occasional weddings. This new 24-70 f4 was top of my list until I watched this review: Canon 24-70 f/4L IS vs Canon 24-105 f/4 IS - ...
2
votes
5answers
357 views

High Chromatic Abberation with Pentax f/1.8 50mm lens

I recently bought a Pentax K-50 in a set with two lenses (18-55 & 50-200) as well as a 50mm fixed focal length lens. The camera is great but I am extremly disappointed in the lenses. Two out of ...
0
votes
2answers
644 views

What reverse connector do I need for Nikon?

I have 2 lenses for my Nikon D7000. First is 18-55mm and 18-200mm. I saw some pictures on internet are done using some reverse connector to get macro effect. What exactly I need to buy and how exactly ...
4
votes
5answers
4k views

Seriously considering upgrading my Rebel T2i (550D) to either a 6D, 7D or 70D

I shoot a lot of performers in low lighting conditions. Essentially I am looking for a camera that will help me reduce the noise level significantly. I find myself rarely using the kit lenses and ...
4
votes
1answer
133 views

Is the distance scale on a lens linear?

I have Nikon lenses with distance scales on them so I can set the lenses to the hyperfocal distance when I need. Say now the focal length is 28mm and the aperture is f/16. The corresponding ...
0
votes
1answer
296 views

What to do when autofocus on Canon 85mm f/1.8 not working?

My Canon 85mm's AF isn't working. But here's the thing, it recognizes there's a lens mounted, it gives focus confirmation, and I can even set the aperture, but it does NOT recognize that it's an AF ...
10
votes
3answers
2k views

What do the red values mean on the distance scale of a lens?

Take this lens I have for example, it has red values on the distance scale (not sure what do you call it exactly) next to the focus ring. What does these values mean?
2
votes
2answers
713 views

What is the sound that I'm hearing from Canon EF 24-105mm F/4 L lens?

I've a Canon 600D with Canon EF 25-105mm F/4 USM L lens. When I half press the shutter I can hear the US motor sound trying to focus on my subject, however I hear another sound, it's lower than the ...
1
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2answers
86 views

Compability of Kenko DGX PR0300 2.0X C-AF F4.5 for Canon and a Canon 55-250mm lens

Can the Kenko DGX PR0300 2.0X C-AF F/4.5 Lens for Canon (Black) be used with a Canon 55-250mm lens?
1
vote
2answers
152 views

Would I get more benefit from buying a new lens to go with a new camera body?

Our family has had a Nikon D70 for years that has seen many holidays and produced lots of good photos. The camera is getting a bit old and unreliable at times, with occasional card issues, and ...
0
votes
2answers
613 views

Can I connect a new Olympus lens to my Nikon camera?

I have a Nikon D3200 and I want to buy another lens for portrait photography... The lens I want to buy is a Olympus not Nikkor, would it fit my camera or would i need like a lens adapter? And is there ...
4
votes
5answers
1k views

Macro lens for Nikon D90

I'm an eye surgeon and take photos for patients with squint (crossed eyes) showing the eyes only. I also need to take photos to lid lesions which may be 3-10mm only. I already have the 18-105 lens. ...
0
votes
1answer
360 views

Can you take a picture of a milky way on a canon EOS 300?

I really want to take a picture of the Milky Way using my camera. I'm not sure if it is able to pick it up? The lens I am currently using is a Canon EF 55-200mm. Should I be able to this?
13
votes
2answers
319 views

Is it a bad idea to activate lens-corrections in camera, when also use lens-correction in Lightroom?

My EOS has the option to correct known lens-aberration which is activated at the moment. I use Lightroom (5.2) for post-processing, which can also correct lens-aberration. Is it a problem to ...
2
votes
1answer
134 views

What do I need to know to select a Nikon-fit macro lens?

I've recently found a passion for macro photography and have purchased a Nikon D3200 which is a great starter DSLR. I have a macro setting on my DSLR and am currently using a VR lens. Will i ...
15
votes
5answers
4k views

What equipment is necessary/preferred for real estate photography?

What equipment is necessary for real estate photography, and what is preferred? I'm starting into real estate photography, and I'm trying to figure out what I need and what I will want to plan on ...
0
votes
1answer
201 views

Sony 3.5-5.6/18-55 SAM (SAL1855) lens broken

I have a Sony 3.5-5.6/18-55 SAM (part no. SAL1855) lens that has taken a knock and the zoom ring is now stuck fast at 55mm and the focus ring doesn't want to pull all the way in. Are there any guides ...
4
votes
2answers
179 views

Perspective Warp vs. Tilt-Shift

I've been doing some architectural photography and indoors with the Nikon 14-24 f2.8 lens. Most of the time I can get my camera high enough to frame my shot and keep vertical lines vertical. But ...
0
votes
1answer
51 views

D70 FEE error with aperture ring set and locked [duplicate]

All my lenses which used to work fine on the D70 now give the fEE error. All are locked at the minimum aperture. I have tried cleaning the camera and lens rings, a hard reset, and pushing the DOF ...
1
vote
1answer
327 views

50mm stuck on the body

I have the Canon 600D and the "nifty fifty" 50mm f/1.8 that cost around 100$. One day when I was trying to switch lenses, I pressed on the lens release button, started twisting the 50mm, and around ...
12
votes
5answers
3k views

Camera lens or megapixel value: which defines the quality and clarity of the picture?

I have a 5MP camera in my phone. The pictures shows good clarity both in the phone screen and my computer screen. But one of my friends has a different camera with the same 5MP in his phone (brand is ...
1
vote
2answers
136 views

How to prevent my waterproof camera from condensation?

I recently bought a HP C-150w for my vacations and the first time I've used it in water it got condensation on the lens as soon as I removed it from water. I've been reading about how to prevent ...
14
votes
1answer
1k views

Can anyone identify the manufacturer of this golden lens?

On a recent photo tour, a lens another photographer used caught my attention because of its golden color and no manufacturer name I know being visible. Unfortunately, I was busy taking some shots ...
4
votes
2answers
176 views

Use of DOF adapters in stills photography

The camcorder guys figured out long ago how you can get the shallow DOF of a larger sensor system (typically full frame) on a camcorder equipped with a much smaller sensor (typically 1/2.8") by doing ...
5
votes
6answers
3k views

How do non-MFT lenses work on a Panasonic GF3?

I'm thinking of buying a GF3. But the lenses are pricy, so I have to pick my kit wisely. I saw that there are adapters for it, but I'm new to lenses. Are there any problems with attaching non-MFT ...
10
votes
4answers
22k views

What is USM, and what are its pros and cons?

My Canon lenses have the designation USM on them, which I assume is for the same reason that they say "Ultrasonic". What does this mean, and why or why do I not want it?
0
votes
0answers
26 views

Sports photography [duplicate]

I own a Nikon D5100. I am 3 steps below a beginner photographer. I bought this camera in hopes of being able to take photos of my family during sporting events; football, wrestling, dance line, ...
0
votes
0answers
63 views

Bayonet mount adapter

I am planning to buy a Vivitar lens with a 58mm bayonet mount. I need to fit it to a 58mm screw fixing. Can I get a adapter to do this? If so, where and what is it called?