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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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2answers
138 views

I've chosen to do abstract architectural shots for a portfolio: what type of lens should I buy?

I'm doing a final project at school and I've chosen to do abstract architectural shots, like the works of Andreas Gursky and Carlo Cafferini. I've got a Canon EOS 1100D and would like to buy a lens ...
2
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2answers
158 views

Why doesn't autofocus work after using manual focus for a while on my Nikon DSLR?

I bought a Nikon D3200 DSLR with 18-55 and 70-200mm lens. I was taking photos for week in autofocus mode, where I have to press shutter button halfway to focus. And then I switched to manual, where I ...
6
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5answers
5k views

Is an EF 50mm f/1.4 the same as 50mm with an EF-S lens on a Canon 550D?

I have a Canon 550D with the standard 18-55mm kit lens. The 550D has a 1.6× crop factor. My question is very simple but whenever I've asked before (Yahoo Answers) I always got overly-complicated ...
1
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4answers
410 views

How can I learn about the differences between types of lenses, so I can choose the best lens for my purpose?

I'm learning photography and all its elements. Probably this question is really stupid, but I have to ask. I'm not dealing well when the question is equipment and one of the reasons I know this is ...
15
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6answers
32k views

If I have a 18-55mm lens, is there a point in buying a 35mm prime lens?

I have the Nikon kit lens that came with a D5100 — the kit lens is 18-55mm f/3.5-5.6 AF-S DX VR Nikkor Zoom. I was thinking of getting a fast lens and I am looking to buy the Nikon 35mm f/1.8G DX. ...
3
votes
2answers
118 views

Can I use a plano convex cylindrical lens, instead of a fisheye, to shoot 360°x180° panos with my phone?

Is it possible to use a plano convex cylindrical lens (like this) instead of a fisheye lens to make a panorama photo? The idea is that the lens would give you 180° vertical and by turning the camera ...
12
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3answers
1k views

How do zoom lenses restrict their widest aperture at the telephoto end?

Does the aperture ring lock the apertures beyond, say 5.6 at length lens's telephoto end? Does the lens introduce an obstacle to the aperture ring so the lens can't be opened anymore beyond the ...
34
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5answers
7k views

How do constant aperture zoom lenses work?

Cheaper zoom lenses usually are faster at the wide end and slower at the long end (for example, the $150 Canon EF-S 18-55mm f/3.5-5.6). More expensive constant-aperture zoom lenses have the same ...
5
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6answers
5k views

Between Nikon 18-55mm II and 50mm f/1.8, which suits my needs better?

I am an absolute beginner in serious photography. I'm a position to get a Nikon D70 body for $100 or so. I've been researching lenses and I'm debating if I should get the one that originally came ...
6
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1answer
236 views

What prevents a f/1.8, 24 mm - 70 mm or similar range zoom lens from being made? [duplicate]

I see that it is common to have professional grade lenses such as 24-70mm lenses made at f/2.8. After using a 50mm/1.8, I was wondering what would prevent a more versatile zoom lens to be made that ...
15
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5answers
3k 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 ...
6
votes
5answers
716 views

Will I regret buying an older lens that doesn't autofocus or have image stabilization with my Nikon D5000?

I am planning to buy a Nikon Normal AF Nikkor 50mm f/1.8D Autofocus Lens. It doesn't autofocus on the D5000 but for the price, I think it's a good choice of lens for portrait. What do you think? ...
7
votes
3answers
159 views

How do I activate the shutter on a Schneider Kreuznach 135/3.5 Xenotar for Linhof?

I can not get the shutter of the Schneider Kreuznach 135/3.5 Xenotar to open. I tried to explain what I know in this picutre: Anyone any idea? I'm afraid I don't have a manual for the lens and ...
4
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5answers
469 views

What focal length is used in photos that both model is zoomed in and the background is open

It is easier to explain my question just by a sample photo from Lyndsey Adler: See the models are so big in the photo and still that big RV is also in the image. What focal length do I need for a ...
0
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5answers
5k views

What pancake lenses are available for Sony NEX camera?

As a DSLR owner, I am currently looking for a compact interchangeable lens camera and I currently hesitate in buying the Sony NEX-5N or the Panasonic GX1. I realize the lens options for the Micro ...
4
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0answers
229 views

Can you use a Krasnogorsk lens (from the 16mm movie camera) on a Sony NEX camera?

I would love to try and adapt the lens from my 16mm camera Krasnagorsk onto my Sony NEX bodies (3 or 5). The lens I am referring to can be seen on this picture, it is a f 1.9 Zoom Lens: I found ...
1
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0answers
148 views

What can I do if everything with my 55-200mm macro lens is suddenly entirely blurry and the camera won't take pictures?

I have a brand new Nikon D5500. The 55-200mm macro lens is not working properly as far as I can tell. It was acting funny the other day when I was trying to take pictures. The pictures were coming ...
6
votes
4answers
483 views

How is actual focal length greater than focal range of lens?

This image (not shot by me) is shot using 70-300mm f/4.5-5.6 lens, but the EXIF shows the focal length to be 302 mm. How is it possible to be shot at a focal length (302 mm) greater than the ...
16
votes
2answers
626 views

Are there differences between cheap and expensive microfiber lens cloths?

You can find microfiber lens-cleaning cloths on the web for less than $2, or pay $6 for a "Canon" microfiber cloth (or buy at a retail camera store for $15-20). Are all such cloths pretty much the ...
1
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1answer
71 views

What kind of microfibre cloth is the lens-wipe? [closed]

I wish to know what exactly is the microfibre cloth used to wipe lenses. How does one describe this material?
5
votes
6answers
424 views

What do the mm numbers on lenses mean?

I'm confused about lenses and numbers. Why are some lenses ex. 50mm-300mm Different sizes? Some lenses with the same mm numbers are huge and some are small... What's the difference? Also the prices ...
13
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4answers
46k 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
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3answers
170 views

Is autofocus important for ultra wide angle lenses?

I want to know if autofocus is important for ultra wide angle lenses, for casual users. I mean, users like my mom. I don't mind about manual focusing, but I suspect that wide angle lenses will focus ...
0
votes
0answers
36 views

What to do when my Nikon AF-S lens won't autofocus? [duplicate]

My Nikon Lens will manually focus but not auto focus. I have tried another lens on my camera body without issues and I have put this lens on another body and it will not auto focus there either. I ...
1
vote
1answer
553 views

Why doesn't my “Nikkor AF” lens autofocus on my Nikon D3300?

I recently got a new lens for my Nikon D3300. I now have 3 lenses; the other two that I have came with the camera and work great but when I put my new lens on, it will only manually focus. If I go to ...
0
votes
2answers
94 views

Why does my camera lens only work with a Polaroid .43x lens? [duplicate]

I got a brand new Canon Rebel T6i and along with it came an ef-s 18-55mm lens, and a Polaroid studio series .43x wide angle lens (which I believe is a telephoto lens). The camera worked fine, but ...
2
votes
0answers
334 views

Why does my Canon 24-70mm L Lens appear to produce higher noise/grain than my 50mm f/1.4 in similar environments?

I just purchased a brand new 24-70mm f2.8 II for my upcoming trip. I've been testing out this lens for the past few days, and have noticed something that I'm a bit confused by. It seems by my tests, ...
1
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2answers
88 views

Does Pentax make a lens adapter to fit Olympus lenses?

I have some Olympus lenses I found at an estate sale, does Pentax make an adaptor to fit these?
0
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1answer
64 views

Good Photographs with Moto G2 Camera [closed]

I have got a MOTO G2 Mobile with 8MP front camera, usually i get best shot from my phone but is there any way so that i can capture best pictures with a mobile camera everytime?
0
votes
1answer
358 views

How to remove scratches from LG mobile camera lens (with coating)?

I recently bought a used LG G2 (T-mobile) from market and later on noticed that it does not takes the photos with expected quality. Sample Photos (I see a visible difference when I see through ...
1
vote
3answers
192 views

effective 12 megapixel in Nikon kit lens

I have nikon d3300. it have 24.2 mega pixel sensor but some where i read that kit lens have only 12 mega pixel effective but the actual resolution of image is 24MP. My question: 1.what is blocking ...
6
votes
1answer
329 views

What is the defect rate of lenses?

I've read a lot of reviews on sites like photozone.de, the-digital-picture.com and the likes and found that quite a few of their review samples turn out to be defective (including the premium 'L' ...
4
votes
1answer
378 views

What is meant by 'centering quality'?

I'm reading lens reviews and I have encountered the term 'centering quality' a few times (e.g. http://www.photozone.de/sony_nex/720-sony50f18nex?start=1). What does this term mean? What are the ...
6
votes
4answers
3k views

Why is my lens only somewhat sharp near the center and very blurry on the edges?

I bought a canon 50-250mm IS lens (for my T1i), maybe two years ago and haven't used it much, but whenever I do, I always regret using it. Pictures are blurry, the depth of field too shallow and so ...
3
votes
6answers
703 views

Is high Chromatic Abberation typical with the 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 ...
2
votes
4answers
1k views

What improvements I could expect upgrading from Canon EF 55-250mm IS to a Canon 70 - 300mm? [duplicate]

I enjoy taking photos with my current telephoto (55-250) but I wonder if the 70-300 could be a worthwhile upgrade. As of November 2013, it would be around a $350 investment if I deal hunt and sell my ...
8
votes
3answers
954 views

Using SLR Lenses on DSLR Cameras

I'm just starting out with DLSR photography - I recently purchased a Sony A230 with the kit lens (18mm - 55mm). I know that the lens mount is compatible with Minolta lenses. These lenses were ...
6
votes
2answers
353 views

What to look for when testing a wide angle lens before buying?

I'm looking at buying a used wide angle lens (specifically Canon EF-S 10-22mm f/3.5-4.5 ) for a crop camera. The question What should one look for when buying a used lens? covers the basics when ...
3
votes
6answers
650 views

Is f/4 sufficient for a telephoto lens for outdoor daytime travel photography?

I am new to photography, and currently own a Nikon D3100 with the kit 18-55mm lens. I also own a Nikon 35mm f/1,8G AF-S DX, that I generally use for portraits and in low light conditions. Right now, ...
1
vote
5answers
3k views

Why image at 400mm is LARGER THAN DOUBLE of image at 200mm? (according to lens formula)

Like most of us, I thought it was yes. Until I really look into the Lens Equation: (1/subject distance) + (1/image distance) = (1/focal length) ...
18
votes
3answers
706 views

What is Chromatic Aberration?

What is Chromatic Aberration? Is it a physical part of the lens, or just an optical illusion?
4
votes
3answers
378 views

Is it possible to DIY adjust the focus ring distance scale of a lens?

I have a particular lens in mind, but is it generally possible to do this adjustment? Of course there are a lot of lenses that don't have any distance scale to begin with. Many lenses have the scale ...
21
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3answers
2k views

Why am I allowed to turn my focusing ring beyond infinity?

Is there a good reason why I can turn the focusing ring on my lenses beyond infinity mark on focusing scale? Following recent questions here and here, it sounds like a real usability issue. ...
4
votes
4answers
184 views

Which focal length lens generally has the sharpest lens? 24, 35, 50 or 85?

Context I realize that the above four focal lengths lend to having a different perspective that make them all unique. It might be possible to use one as the other but that isn't always true with the ...
0
votes
1answer
102 views

What lens is ideal for graduation and family pictures?

I am currently using a Tamron 17-50 f2.8 for graduation and family pictures, so that many people can fit into the frame, but I find this lens isn't sufficient enough — lack of sharpness around the ...
2
votes
4answers
148 views

How can I fire two cameras simultaneously with different settings but the exact same view?

I have an idea I want to play around with and I was hoping something already exists for it but google has turned up nothing. I want to use two cameras synchronized to fire at the exact same time and ...
0
votes
2answers
154 views

50mm or 35mm lens for a DSLR with 1.6 crop factor? [duplicate]

I have a Canon 500D, with the original lens EF-S 18-55mm f/3.5-5.6 IS II. I would like to try a prime lens, but I don't know whether I should choose a 35mm or 50mm lens. I read that the 50mm was ...
3
votes
4answers
1k views

Should a Nikon 18-55 lens zoom automatically?

I have purchased a Nikon D5000 camera with 18-55 from eBay. The lens focuses automatically, but should the lens also zoom automatically or is this controlled manually by the zoom ring.
15
votes
7answers
48k 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 ...
0
votes
0answers
32 views

G-type or D-type? Help Please [duplicate]

I have a Nikon D610. Full Frame. With an in-built focus motor. I plan to go in for a 50mm prime lens by Nikkor. Which one should should I go for, the G-type or the D-type?