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by Bart Arondson

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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
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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
564 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
72 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
669 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
50 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
75 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
9
votes
3answers
678 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
142 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
85 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
198 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 ...
0
votes
3answers
105 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
votes
1answer
209 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 ...
0
votes
2answers
128 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 ...
1
vote
3answers
253 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 ...
0
votes
3answers
129 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 ...
14
votes
2answers
8k views

What's the difference between a regular lens and a macro lens? [duplicate]

What is the difference between a 100mm lens and 100mm macro, or 50mm and 50mm macro? Can we use a macro lens to shot portraits? If yes, what focal length is the best? Please suggest a Canon macro ...
0
votes
3answers
196 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 ...
17
votes
11answers
7k views

What is the best lens for taking photos of birds?

I was using a Panasonic Lumix, now I finally got a Canon EOS 60D, but I was used to that 18x zoom that my old camera has, because you can't get too close from the birds to take pictures, since they ...
29
votes
4answers
43k views

What is back-focusing?

What is back-focusing? Is it something I need to be worried about, or can I just live with it? How can I tell if my camera/lens is sufferring from it?
2
votes
3answers
172 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
votes
3answers
171 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 ...
3
votes
4answers
413 views

Differences between canon 17-85mm and 18-55mm

I was given a 450d with a canon 17-85mm lens, it has USM and image stabilzing. It has always seemed okay to me but after a few years i have decided to upgrade to the 700d, which has now come with a ...
0
votes
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 ...
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votes
1answer
244 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 ...
11
votes
6answers
11k views

What is the difference between a telephoto lens and a zoom lens?

Looking at the product page for Nikon lenses, I notice a distinction between telephoto lens and zoom lens. What is the difference between the two? Why would I want one over the other? I wiki'd ...
3
votes
3answers
863 views

Is focus hunting “normal behavior” for the Sony SEL18200SE?

I recently bought an NEX-6, the 24mm F1.8 (SEL24F18Z) lens, and the black 18-200mm F3.5-6.3 (SEL18200LE) lens. I love the 24mm lens, but I'm having a what I believe one would call a "focus hunting" ...
3
votes
0answers
78 views

Using lightroom lens correction profiles on DX cameras

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) ...
7
votes
3answers
3k views

What are the advantages of a lens having a fixed maximum aperture?

What are the advantages of a lens having a Fixed Maximum Aperture? Previous answers have indicated that "pros tend to want constant apertures in zoom lenses". While in general lenses with a fixed ...
1
vote
1answer
74 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 ...
0
votes
2answers
51 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
0
votes
4answers
108 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 ...
3
votes
2answers
202 views

What lens should I use to be able to fill the frame with a mounted 35mm slide at 12 inches?

Objective: Digitize thousands (~7500) mounted 35mm slides as quickly as possible (without using a paid service), about 1,000 before Father's Day. Equipment: Kodak Carousel 750H Projector Nikon ...
0
votes
1answer
93 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.
7
votes
4answers
2k views

Is the Canon EF 35-105 lens compatible with Canon T2i body?

I recently upgraded to a T2i from the original Digital Rebel. I usually used the Canon EF 35-105 lens on the old Rebel. When I put that lens on the T2i after about 5 seconds everything goes off on ...
1
vote
1answer
87 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 ...
24
votes
15answers
14k views

What lenses would best comprise a travel photography kit?

On a crop sensor camera, e.g. Canon EOS 7D, what would be the best kit to travel with around Europe for a few weeks? My shooting style will focus on landscape, architecture, and general travel shots ...
0
votes
3answers
67 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 ...
-3
votes
1answer
86 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 ...
6
votes
4answers
266 views

Does sensor size dictate lens size with all other things equal?

Background I'm considering switching from DSLR to mirrorless and have been researching the micro four thirds (M43/MFT) and Sony's new Alpha 7 (A7). While Sony hasn't released many lenses for this new ...
0
votes
5answers
961 views

Are bad reviews of the Sony E 16-50mm f/3.5-5.6 pancake kit zoom reason to avoid the system?

I'm thinking about buying the Sony A6000 over a Micro Four Thirds camera because of the sensor size, but I read in many reviews (such as this) that this is one of the worst lenses around. Now, since a ...
0
votes
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 ...
1
vote
4answers
274 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 ...
18
votes
4answers
2k views

Can I use old Pentax lenses on newer Pentax DSLRs?

Can I use old Pentax lenses from the film days on the newer Pentax DSLRs? Are there any caveats or exceptions? Are adapters or modifications needed?
9
votes
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 ...
0
votes
2answers
1k views

Sigma 17-50 f/2.8 or Sigma 17-70 f/2.8-4 (C) for Canon 600D

I know this has been asked alot.. I have Canon 600D with Canon EF-S 18-135mm f/3.5-5.6 and Canon 50mm f/1.8 lenses. I'm looking to upgrade the zoom lens with something with better IQ, sharpness, ...
52
votes
6answers
7k views

Why are wide-angle lenses so much more expensive?

What is it about wide-angle lenses that makes them so much more expensive than an equivalent-quality tele or prime lens? Take the Canon EF-S 10-22mm USM, for example. RRP is nearly £1,000! Are they ...
2
votes
2answers
170 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
votes
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, ...
30
votes
3answers
13k views

What does the number of elements and groups in a lens mean?

All lens specifications include a statement of how many elements the lens contains, and in how many groups, for example: Nikon AF-S VR Zoom-NIKKOR 70-300 mm 1:4,5-5,6G: 17 elements in 12 groups (two ...