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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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84 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 ...
3
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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 ...
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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 ...
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 ...
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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
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3answers
153 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 ...
2
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2answers
108 views

Is lens geometric distortion, chromatic aberration and light fall off still as much of an issue? [duplicate]

I saw an earlier question (Why prefer the 18-55mm and 55-250mm lenses vs 18-200mm?) that mentioned lower quality lenses have distortion, aberration and light fall off issues. Has software like Adobe ...
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 ...
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3answers
154 views

Difference between Minolta MC and MD mounts and can they be used on AF camera?

I am looking at some older lenses for sale. There are a lot of Minolta MC and MD mount lenses out there. Can they be used on an AF mount body at all (as a fully manual lens)? Will either of the MC ...
0
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1answer
223 views

Why is Nikon 13 mm f/5.6 (the Holy Grail) considered extreme?

I happened to see that a copy of the very rare Nikon 13 mm f/5.6 lens was for sale here. Both the design and price tag are pretty extreme. This article seems to suggest that it really is one-of-a-kind ...
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2answers
132 views

Can I get a damaged Canon 70-300mm repaired more cheaply?

I have a Canon EF 70-300mm f/4-5.6 IS USM, due to my own rushing, it fell off the camera to the gravel below. I took it in for an estimate and I was told the "guides" are shot (thus the barrel sags ...
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3answers
403 views

How to know if a Canon lens is compatible with my Nikon camera body?

I am looking at this Canon 50mm lens for my Nikon D5200. How can I be sure that this lens will fit on my Nikon D5200? The camera manual does not have a list of lenses that are compatible with the ...
1
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4answers
225 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 ...
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3answers
130 views

Is the camouflage texture of certain wildlife lens covers relevant? [closed]

Camouflage texture on wildlife lens covers seem pretty popular. I get that the covers can be great to protect the lens from dents and scratches as well as to protect the hands of thephotographer from ...
2
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3answers
176 views

How is the number of stops of benefit provided by VR determined?

I hear people talking about vibration reduction giving you extra 'stops' on a lens, thus giving you extra shutter speed to play with. How do people work this out into an amount of stops? E.g. by ...
5
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3answers
176 views

How do waterproof lenses focus underwater?

Our eyes need air in front of them to be able to focus properly, that's why when we go swimming using goggles, our surroundings are much clearer than without. So my question is, how do waterproof ...
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0answers
42 views

Technical question about aperture and lens [duplicate]

F stop = focal length / iris diameter So for example, my Lumix 20mm pancake, f1.7, has iris diameter of 12mm at that f stop, correct? So if Panasonic wanted to make a faster lens, could they do it ...
4
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0answers
135 views

Does Lightroom take sensor size into account when applying lens correction profiles?

I have a question about using the lightroom lens correction profiles for cameras other than full frame. I have been using a Tamron 24-70 which is known for having slight vignetting (full frame only) ...
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1answer
263 views

Which focal length lens do I need for portrait and landscape photography? [closed]

I have recently bought a Canon7d. now I need a lens.. before that i had a nikon but I switched to canon now. so I have no lens. i have selected these 3 ... which one should i buy and which will serve ...
1
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1answer
81 views

Replacing a Lens Mount

Before the whole 'It's been answered before!' comments roll in I want to say I'm not talking about the mount on the lens I'm talking about the mount on the BODY of the camera. I've been searching ...
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2answers
63 views

Lens Adapters For Point and Shoot Cameras?

I have an old Kodak DX7590 and I was wondering if there were any lens adapters that would work with it to turn it into a mediocre DSLR
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4answers
110 views

Is it assured that every type of lens will be made for a given interchangeable lens camera? [closed]

If I buy a Canon DSLR, can I be rest assured, that in future, I can put on any kind of lens on this camera. For example, is there guaranteed to be at least one of wide angle,telephoto,fish eye lenses ...
0
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1answer
140 views

fEE error using Nikon 85mm1.8 with nikon D80 camera [duplicate]

Does the Nikon 85mm 1.8 D work correctly with the Nikon D80 body? I just received mine today and keep getting error reading fEE when the lens is set to all apertures except f/16.
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3answers
71 views

Going to Italy - My 7d needs a wide angle lens [duplicate]

I'm headed to Italy on my honeymoon. My current kit (or at least what I'm considering bringing) is as follows: 100L Macro 2.0 18-135 Kit lens Possibly the 50mm 1.8 Now - I was originally going to ...
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1answer
95 views

nikkon, sony or cannon [duplicate]

I very new to DSLR Photography. Now I'm in confusion that Sony alpha 58 or Cannon D600. both of them are nearly same cost. but I found that that for Sony there are less lens and accessories. but ...
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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 ...
0
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0answers
44 views

What defines camera's size? [duplicate]

Smartphone cameras are small while others are big. I know some functions like zoom can change physical size, etc. So, ignoring a zoom lens, what defines a camera lens? I want to get the general idea ...
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4answers
282 views

What did the “macro” switch/mode do on older zoom lenses?

I remember that a number of older (80s to maybe mid 90s) zooms had a "macro" mode where you would throw a switch that allowed the lens to focus closer. What was that? was it just a built in extension ...
0
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3answers
198 views

Why can lenses only focus from so close? [duplicate]

I have always wondered, why is it that a lens can only focus from so far away from the subject? I know some lenses have a kind of macro switch which basically allows them to focus closer but why are ...
1
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1answer
93 views

Lens recommendation for upcoming NYC trip? [duplicate]

I'm just a photo enthusiast knowing just the basics so far. My dad used to work with a film SLR and taught me a few things. I currently own a Canon 60D with the 18-135mm kit lens. I originally wanted ...
5
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2answers
205 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? ...
2
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2answers
191 views

Difference between zoom and focal length? [duplicate]

Until now I thought that focal length is just another way of measuring how much a lens zooms: The higher the number the more it magnifies, the smaller the number the wider the angle and thus the less ...
0
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0answers
21 views

Looking for sigma adaptor to canon EOS 550d [duplicate]

Here's the situation.. I'm looking for a sigma lens adapter to a CANON 550D. The lenses are: A Sigma ZOOM, 24-70 mm, 1:3.5-5.6 UC; A Sigma ZOOm, 100-300 mm, 1:4.5-6.7 UC; Minolta AF ZOOM 35-70 mm, ...
6
votes
2answers
567 views

How does an apodization filter improve bokeh?

The new Fujifilm Fujinon XF56mmF1.2 R APD has an "apodization" filter, which Fujifilm says "smoothes the outline of the subject to create a more natural bokeh effect". The Wikipedia article on ...
1
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1answer
214 views

Canon lenses with Sony A7r

I am thinking about switching from 5DMIII to Sony A7r. In terms of lenses, I have Canon EF lenses (16-35, 50, 70-200), and a Tamron 24-70 VC. Will the electronics of those lenses work with the ...
2
votes
1answer
116 views

How does a focus ring bring a subject in or out of focus?

When you manually adjust your focus ring on the lens, what actually happens inside the lens? Is this changing simply the point at which the lens is focusing, so that anything at this distance away ...
0
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4answers
94 views

Does camera calibration negate lens color quality?

One of the quality of lenses are the way it renders color. Some say, a lens of a certain brand has a special color quality to it etc. But if you do camera calibration, will it matter at that point? ...
0
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3answers
140 views

Which lens/focal length offers the widest viewing angle without too noticable distorions/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
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
290 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
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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 ...
1
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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 ...
0
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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 ...
10
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5answers
2k views

is there a real difference between “digital” and “film” lenses?

I'm looking at the Sigma 20mm F1.8 EX DG ASP RF lens right now to use on a 35mm film Camera (Nikon N80). The DG stands for "Digital Full Frame" according to Sigma, but they don't say what the ...
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
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2answers
472 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 ...
0
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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?
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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.