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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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0
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2answers
540 views

How do I convert focal length to maximum distance?

I would like to know whether there is any relation between focal length and distance. For example, what is the max distance I can shoot from a 55mm-300mm lens?
0
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3answers
703 views

Moving up to the next lens from 55-200

I do mainly amateur wildlife shots especially whale watching and some football photography just as a hobby. I currently have canon EOS 400d with 18-55, 55-200 and macro lenses. What lens would you ...
0
votes
4answers
3k views

What's the best lens for shooting baby and kids with a DX Nikon?

I have a Nikon D5100 and want to see whats the best lens for shooting pictures of a baby and kids running around inside and outside? I would like to stay under $1,000. Thanks for the help.
0
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2answers
13k views

What is the difference between DX format and FX format lenses, and which to choose for what purpose?

http://www.nikon.co.in/products.php?categoryid=1011 What is the difference between DX format and FX format lenses, and which to choose for what purpose? What are the pros and cons of both?
0
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2answers
662 views

How do I choose a telephoto zoom lens? [closed]

I have a Canon 1100D kit (18-55mm IS II) and a 50mm f1.8 lens. Now I'm looking for a zoom lens. What do you think about the following: Tamron 18-200mm f3.5-6.3 Tamron 70-300mm f4-f5.6 DI LD Tamron ...
-2
votes
4answers
629 views

What causes blurred/non-sharp images taken of stable objects?

I know about two important reasons which are motioning or shaking camera/hands and dust and dirt on you lens but if you have fixed them and still you have blurred/non-sharp results, what can be the ...
-3
votes
3answers
434 views

Which lens is better: Canon 70-300mm 4-5.6 or 50-200mm? [closed]

For use on a Canon 600D, primarily for travel, landscapes, macro and subjects in motion. An additional consideration: if I go with the 50-200mm I could also afford a 50mm lens.
-3
votes
3answers
652 views

Cheap wide angle lens for Canon EOS 500 D?

I am planning to visit Maldives in couple of weeks.I need a cheaper wide angle lens extension or wide angle lens itself which could fit my Canon EOS 500 D.I would like to capture whole beach in my ...
39
votes
9answers
87k 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 ...
42
votes
6answers
23k views

Why do pro photographers use huge lenses to take portrait shots?

Every time I see a photoshoot video on youtube, the photographers have the biggest lenses I have ever seen in my life to shoot portraits or full-body shots. For example, the Nikon 70-200 f/2.8 ...or ...
24
votes
2answers
5k views

How do I properly position a lens hood?

I understand the basic idea of a lens hood, but after looking at mine and contemplating how to use it, I get stuck on the same question every time: Does the orientation of the hood on the lens ...
21
votes
2answers
871 views

Considerations when purchasing a prime lens?

What should I be aware of when buying a prime lens (other than that it will fit my camera)? What specs should I pay close attention to?
28
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2answers
2k views

Why no zoom lenses below f/2.8?

I can understand that a zoom below f/2.8 would be difficult and costly, but it seems like something pros would kill for. Surely it can't be more expensive (if its possible) than some of the $10k+ ...
26
votes
5answers
10k views

What is the effect of a scratched lens?

I have a lens with a small but significant looking scratch near the center. But I don't see any difference in the photos. Where does the imperfection show up? How important is it to get the piece of ...
2
votes
2answers
896 views

What is a Carl Zeiss lens in a camera?

I have a Sony CyberShot camera and I don't know why they use a lens in the camera. What is a Carl Zeiss lens?
14
votes
7answers
864 views

Upgrade strategy for Canon EOS DSLRs

In February 2010 I bought my first DSLR: EOS Rebel XSi EF-S 18-55IS Kit I also bought a zoom telephoto lens: Canon EF 70-300mm f/4-5.6 IS USM The XSi is a simple camera which I thought would be good ...
12
votes
10answers
2k views

What lenses to bring while traveling? One good wide-telephoto or several smaller ones?

I have a Canon 7D and often take my camera on the road while traveling. In the past I've taken my Sigma 17-70 f/2.8-4 and my Canon 70-300 f/4-5.6, which means that I must switch out lenses quite a ...
7
votes
8answers
3k views

Software to auto correct lens distortion based on photo

A photo contains digital information about the make of the camera the focal length,etc. Does any software use this information and auto correct the lens distortion in the photo. I know that Photoshop ...
21
votes
4answers
1k views

Do the Lightroom lens correction tools make good lenses less important?

Lightroom has Lens Correction tools such as Distortion, Vignetting, Chromatic Abberation, etc. depending on the brand and model of lens. Due to this feature, is it less relevant what the distortion ...
17
votes
5answers
1k views

How do I find the aperture that produces the highest-quality images for a given lens?

I'm not talking about large aperture (f/1.8, f/2.8...), rather, about small apertures (f/18, f/20, f/23...). I read somewhere (actually I think it was on this site, but I don't exactly remember which ...
15
votes
5answers
16k views

Are mirror lenses good for wildlife photography in daylight?

I've recently seen these Rokinon/Opteka mirror lens with whooping focal length (like 500mm, 600mm, 800mm, 1000mm) at a cheap price. And I have seen some of their same pictures in Flickr and vendor ...
13
votes
2answers
6k views

How iPhone 5S can have such a big aperture? f/2.2?

I thought that in order to have a big aperture such as f/2.2 a big amount of light should be able to enter to the sensor and in order to do it, a big lens was needed. How is it possible that in the ...
13
votes
3answers
2k views

What camera & lens combination(s) are ideal for animal and bird photography?

I am interested about shooting animals (including, but not limited to, birds and in general animals that can move fast). So far, I would say I know the basic concepts of camera but I have never ...
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 ...
27
votes
2answers
3k views

What is a pancake lens?

I've read about a "pancake lens" but don't really understand what that means. What the pros and cons of having a pancake vs. another type of lens? I'm thinking of getting a Panasonic Lumix DMC-GF1 ...
18
votes
7answers
5k views

What is a great portrait lens for Nikon (under $1000)?

I am currently shooting with a Nikon D90 and use the kit 18-105 lens and a 50mm f/1.8. Mostly I shoot as a hobby but lately I've been asked to do some family and engagement shoots. The 50mm is ...
17
votes
4answers
2k views

What fixed lens to use on a cropped sensor DSLR for mountain landscape photography?

This spring, I want to do a few trips to mountains to take some shots of mountain landscapes, including in sunrise/sunset environments. I already have a Nikon 18-200mm VR (3.5-5.6). I imagine that it ...
13
votes
2answers
316 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 ...
13
votes
1answer
264 views

In which order is it recommended to set a tilt-shift lens?

After an entire week of having a Canon TS-E 17mm F/4 at my disposal, I am still not sure which control to start setting first. This particular lens has a total of 5 degrees of freedom: ±6.5° tilt ...
13
votes
6answers
2k views

What should I do to switch my gear from Sony to Canon?

So I currently have a Sony A700 which i bought a year ago, and wanting to get some quality glass. I was looking at the Carl Zeiss 24-70/f2.8 lens, but then got talking to a friend who's a canon user. ...
12
votes
3answers
21k views

Should I purchase a Tamron 70-300 USD VC or Canon 70-300 USM IS?

Good day all. I was almost decided on Canon 70-300 USM IS (non L) but recently came to know about the Tamron version (SP AF 70-300 F/4-5.6 Di VC USD) of this one. Neither of these makes you a better ...
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 ...
10
votes
2answers
978 views

How can I determine if my Sigma 10-20mm lens copy is appropriately sharp and focusing right?

I just purchased a Sigma 10-20mm lens (Canon mount) and based on the reviews I was aware that many people receive copies of the lens that are soft or don't focus properly. I purchased from B&H, so ...
10
votes
3answers
3k views

How many optical aberration types are there in lenses? And what are they?

Everyone hears something about chromatic aberration but are there any other types? What causes them?
8
votes
4answers
2k views

Is a 50mm f/1.8 or 50mm f/1.4 a good lens for portraits in low light?

I only have one lens right now. It's the Canon 18-200mm f/3.5-5.6 IS kit lens. I think this lens is great when the lighting conditions are right but in low light I usually have to resort to flash. ...
8
votes
5answers
4k views

What CCTV lenses can I use with Micro 4/3 and adapter?

I keep hearing things about using CCTV C Mounts hacked into a Micro 4/3 camera using an adapter. Does anybody have any experience with this? Can any ebay lens work, or is the C-mount not universal? ...
7
votes
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 ...
7
votes
7answers
3k views

What are hidden-gem “bang for the buck” lenses for Nikon?

I'm about to buy a D700 Nikon (no, NOT D800). I have no Nikon equipment at all. I'll initially be retaining my "main" Sony based system while I get the D700 'up to speed'. In time I expect to have to ...
7
votes
4answers
45k views

How do I decide between the Canon 55-250mm or 70-300mm + 50mm?

I just bought a Canon Rebel T2i (EOS550D/Kissx4) with 18-55mm kit-lens and I have an additional $300 USD to spend on a lens. I had decided to buy a Canon EF-S 75-300mm f/4-5.6 (without IS) and a Canon ...
6
votes
1answer
1k views

How difficult is it to correct mustache-style distortion?

I am considering the Samyang 14mm Ultra Wide-Angle f/2.8 IF ED UMC but I am somewhat concerned about the 5.3% of mustache-style distortion this lens produces. I like most of what I read about this ...
6
votes
4answers
652 views

Are there any pinhole “lenses” available from lens manufacturers?

I know that it is possible to make your own pinhole, but do lens manufacturer's make pinhole "lenses" that include aperture data, etc? If so, who makes them?
6
votes
3answers
201 views

Why is the amount of light a lens lets in called the 'lens speed'?

It seems very counter intuitive that the amount of light let in by a lens is referred to as the lens speed. This term confused me for a while because I couldn't logically see how a speed would be ...
6
votes
4answers
7k views

Can I use Minolta Maxxum lenses with Sony Alpha cameras?

I have an old Minolta Maxxum 7000i AF-SLR camera from early 90s. I have a complete set of lenses, filters, etc., I found out that Sony ultimately ended up buying Minolta, and developing their alpha ...
4
votes
4answers
372 views

Lens Cleaner Recommendations

What is, in your opinion, the best lens cleaner? Which do you think is the most effective/best value for your money/most easy to use, etc. Please include advantages/disadvantages as well as price and ...
4
votes
3answers
9k views

What mm lens for distance shots?

If I am looking to take landscape and wildlife shots and some of those shots being from a decent distance what mm lens would I need? I am not sure what else I should be adding here, I am just looking ...
1
vote
6answers
435 views

What are some artistic techniques that can be performed with lenses?

I have recently been attempting to perform various different techniques for taking pictures, like using a tilt-shift lens, freelensing, HDR photography, and a couple others. The styles that I want to ...
26
votes
6answers
4k views

Can I damage the focus system by turning the focus ring when the lens isn't mounted?

I have a couple lenses that don't have an internal focusing system, and whenever I want to put them back in my bag, I turn the focus ring to make the lens shorter. I noticed that when the lens is set ...
20
votes
3answers
1k views

Is it physically possible to build a long zoom (17-300 mm for example) at an aperture value of around 1.4 or 1.2?

I'm curious if the physics allow a company to build such a lens of course with good IQ, minimal color aberration, maximum sharpness, and little to none lens vignetting or edge softness
17
votes
2answers
826 views

Do rounded edges on aperture blades improve image sharpness, and how?

In the description for the XF lenses for its new X-Pro system, Fujifilm crows: The [XF lenses] all offer precise control over depth-of-field and deliver excellent out-of-focus bokeh thanks to the ...
17
votes
5answers
2k views

When would one need manual focus override?

In lens reviews, ability to override auto-focus manually is often referred to as a good (and important) feature. I have rarely, if ever used that feature, so I feel I might be missing out on an ...