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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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1answer
225 views

Can a lens's bokeh be predicted by reading an MTF chart?

I've heard people say that everything meaningful about a lens's optical performance can be determined simply by looking at the MTF charts — although nothing is mentioned of that under How do I ...
4
votes
2answers
806 views

How to clean a circular polarizing filter filter?

Having some problems here guys. I have a 67mm Marumi CPL, which I have used for quite a long time. I keep it clean with a blower and some microfiber. However, until yesterday, I didn't notice some ...
27
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2answers
1k 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+ ...
0
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5answers
2k views

Good all-round lens for Canon XS/1000D? Is 24-105mm F4.0 IS USM a good upgrade?

I've been using my 1000D for 2 years now with the kit 18-55mm lens and for about a year now I've got it a bigger brother, a 55-250mm F4.0 IS lens, with the latter being on my body most of the time. ...
4
votes
4answers
6k views

What is the DT series of Sony lenses?

Among the Sony lenses there are some types with a DT abbreviation and some are without it. Those having DT called DT-series. What does DT mean? What is the difference between DT-series lenses and ...
19
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11answers
2k views

What's the best way to create a tilt-shift photograph?

Specifically, what's the best way to go about shooting photos that have a fake miniature quality to them, which produces high-quality (and believable) images? Is there some special lens that you can ...
4
votes
1answer
264 views

When setting up a 3D DSLR rig, what lenses would provide the best results?

I'm currently exploring the idea of setting up a 3D rig based on this question. I know I need two cameras, some sort of twin camera mount, a way to trigger both cameras at once and software to put ...
3
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3answers
158 views

Can knowledge and preparation offset the need for longer lenses in wildlife photography?

One of the biggest barriers to wildlife photography as I see it is the requirement for fast, long expensive lenses. I have in the past used a teleconverter to get my 300mm lens up to 600mm but even ...
7
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2answers
698 views

How can a telephoto lens take great landscape photos?

I've read in various answers on this site people mention that telephoto lens can be used quite nicely for taking landscape photos. How is this possible, as my (beginners') understanding of landscape ...
4
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1answer
273 views

What is the camera's influence on lenses' optical properties?

I installed my 50mm f/1.4 Nikon lens on my Olympus E-P1. I notice some properties of the lens changed — namely, magnification and DoF both increased. I understand magnification increases because of ...
5
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3answers
4k views

Why are objects far away inverted through a lens but not through the viewfinder?

When I look through a lens the image of objects far away are inverted but when looking the the viewfinder on my camera they are not. Why is this? I am having a hard time understanding why objects far ...
2
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3answers
426 views

Is it worth getting third-party warranties on lenses?

I've just taken the plunge & ordered a refurbished Canon EF-S 17-55 f/2.8 lens. Refurbished & on sale, it's still expensive -- about as much as my T1i + other lenses put together! I think my ...
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3answers
3k views

How can I calculate vertical field of view from horizontal field of view?

I have an Axis M1011 (specs available here), which I need to find the vertical field of view. The online specifications tell me the horizontal field of view is 47 degrees, and the image size is ...
1
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3answers
464 views

How can I clean a camera effectively?

My camera lenses are getting particles and such on them, and whenever I take very close up (Macro) Picture, I can see these particles on the image. There are also fingerprints on the LCD screen. There ...
6
votes
4answers
258 views

How do I clean the external forward-facing glass on my lens?

How do I clean the external forward-facing glass on my lens? Over the last year or so of use it has accumulated a little dust and a translucent smear mark. Nothing serious, but I'd like to remove ...
1
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2answers
393 views

What lens do I need to do product photography with my Olympus E500?

I have an Olympus E500 camera passed onto my by my father in law and since fallen in love with photography. I now have a client who is requesting a product shoot of some of his products and I would ...
2
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1answer
118 views

Why does an aperture crop the image when you look through a lens itself but not when you look through the viewfinder?

I have been studying lenses for two days now and the aperture is very confusing. Based on the question here it appears that the aperture should not crop the image at all but when I look through a lens ...
5
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1answer
237 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 ...
12
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3answers
443 views

What is Chromatic Aberration?

What is Chromatic Aberration? Is it a physical part of the lens, or just an optical illusion?
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6answers
1k views

What lens should I get next to start professional photography? [closed]

let me start by saying I am venturing further into the photography world and will like to start making money out of my 'expensive' hobby if I can. As such is the reasoning for my questions. Money is ...
3
votes
5answers
19k views

Best image quality non-prime walk around lens for travelling with a Canon crop dSLR?

If money where no object what is the best quality non-prime walk around lens to pair with a crop sensor Canon dSLR for travelling? From what i have read so far a lot of people recommend the Canon ...
0
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2answers
607 views

Is focal range the only significant difference between Canon's EF-S 18-135 IS and 18-200 IS lenses?

Is there any difference in performance (other than focal range) between Canon's EF-S 18-135 IS and 18-200 IS kit lenses, in terms of sharpness, contrast, AF speed, or anything else? I can't decide ...
4
votes
1answer
592 views

Is there any downloadable Photoshop CS5 Lens Profile for iPhone (3GS)?

Either user- or Adobe-created, is there any downloadable lens profile for iPhone (3GS) cameras for Photoshop, for use with Lens Correction?
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4answers
4k views

How can I use Minolta / Sony AF lenses on Nikon DSLR bodies?

I'd like to use selected Minolta & Sony AF lenses on a Nikon — say, a D700. Can I, and if so how? My first SLR was a Minolta SRT303B and I've used Minolta since. That was manual but I now ...
5
votes
4answers
614 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? ...
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2answers
141 views

Do Nikon D-100 lenses fit a D-90?

Do the lenses that fit a Nikon D-100 also fit a Nikon D-90 camera body?
3
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1answer
3k views

What is a “2.2X Pro Telephoto” lens?

I am looking to enter the world of SLR cameras and learning some more about lenses. I came across a package that has a 2.2X pro Telephoto what exactly does that mean and how does it work? (Please ...
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1answer
293 views

Nikon vs Canon vs [duplicate]

Possible Duplicate: What are the most notably differences between Canon and Nikon lenses? Is there any significant difference between Nikon and Canon? My original thought behind this ...
4
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3answers
768 views

Canon 550D - Is it a good camera for starters?

I´ve been reading a bit about this camera, and some opinions go that it is too expensive a camera for a simple beginner, while others say it is an excellent entry-level one with enough features to go ...
6
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2answers
484 views

What is the effective aperture of two stacked lenses for macro?

Is there a way to calculate the aperture of two lenses stacked together for macro? In my specific case, I have 90mm f/2.8 and 18mm 1/3.5 lenses.
2
votes
2answers
1k views

Do lenses affect color fidelity?

It seems to me that my costlier (Tamron 90 f/2.8 macro) lens gives better colors than my cheap Canon 18-55 IS kit lens. So does lens matter for color quality? What physical processes are involved in ...
5
votes
5answers
3k views

Canon EF-S 15-85mm IS USM or Canon EF-S 18-135mm IS to replace a broken kit lens?

I'm looking to upgrade the 18-55 kit lens I got with my 450D. I finally settled choosing between these two. Which one would you get and why? I do mostly amateur photography on my spare time, trips ...
1
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1answer
234 views

Can I save money on lenses by buying a Nikon camera with an in-body autofocus motor?

I have dilemma what camera is better Nikon D5100 or D90. The first one is newer but the second one has lens servo ("screwdriver") motor. My question is: can I save some money overall with the more ...
4
votes
8answers
6k views

Do I need a filter for my prime lens in order to protect it from dust, splashes, etc?

From here: http://photo.stackexchange.com/a/569/5205 UV Filters: Many photographers feel that it is worthwhile to put a UV filter on the front of every lens, on the basis that this will protect ...
4
votes
3answers
2k views

What does the millimeter measurement of a macro lens mean?

I understand that the millimeter measurement on a lens is, for lack of a better term, how far it can "zoom" in or out, but what about macro lenses? What does the millimeter measurement signify? How ...
0
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2answers
807 views

Will switching from a Nikon D60 to a Canon EOS 60D be better for night photography, city photography, and portraits?

I am currently using Nikon D60 and have been itching to upgrade for some time. There are a lot of things about Canon EOS 60D that seem very appealing to me. The higher resolution, the sensor that ...
1
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6answers
953 views

One expensive (L) lens or a variety of cheaper lenses, or a better body?

I'm a photography enthusiast, my current equipment are the following: Canon EOS 1000D EF-S 18-55mm (the kit lens) Sigma 55-200mm Canon EF 50mm f/1.8 (the one i enjoy the most) Now so you can ...
3
votes
3answers
695 views

After 2 years of amateur photo, buy a new body or a great lens?

Two years ago I bought my first DSLR. Since then I have bought and inherited some lenses. What should I buy next, a better body or more lenses? I enjoy photography but I do it fewer than I'd like (not ...
8
votes
3answers
2k views

Does a 35mm prime lens show the same bokeh as a 50mm prime lens on a cropped sensor?

I came to know that a 50mm prime lens on a cropped sensor behaves like an 75mm prime lens. So, does the 35mm prime lens behave like a 50mm prime lens on a cropped sensor? If yes, then will it show ...
6
votes
1answer
300 views

Will a firmware update/change erase Canon's service center lens calibration settings?

Since it's pretty cheap in Korea, I sent all my prime lenses and my new Canon 60D to be calibrated at the local Canon service center so they can be "matched" to the body. If I install a newer updated ...
3
votes
6answers
513 views

Have options for a good quality starter kit for a Canon APS-C changed since 2010?

I am buying Canon EOS 60D. I am looking to put together a starter kit and I saw this question talking about two good lenses to get for a not-so-expensive Canon camera. However, that question is from ...
2
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3answers
336 views

Are these Nikon 16-85mm lenses actually the same?

I just ordered the D7000 with three lenses, one of them was the Nikon AF 16-85 mm f/3.5-5.6 DX G AF-S ED. Now I found that they sell a package "D7000 with 16-85mm, AFS G VR" for $100 less. I can undo ...
2
votes
2answers
196 views

Are film lenses effectively longer focal lengths on cropped-sensor DSLRs? [duplicate]

Possible Duplicate: Does my crop sensor camera actually turn my lenses into a longer focal length? My wife has a pair of Tokina lens (28-80mm and 100-300mm, I believe, without the lens here ...
5
votes
3answers
8k views

How can I fix a broken lens/autofocus?

My 35mm f2 canon lens's autofocus has stopped working. In manual focus mode the focus wheel is locked, and in autofocus mode the focus wheel spins freely but does not change the focus at all. In ...
2
votes
3answers
10k views

What is the best lens correction software which integrates with Aperture 3?

I want to know if there are any good lens correction software (i.e. plugin) for Aperture 3? I am primarily looking for general purpose lens correction software. I have looked at the plugin page for ...
1
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2answers
915 views

Nikon 50mm f/1.8 D has less distortion than Nikon 50mm f/1.8 G?

Some of the Amazon reviews say that Nikon 50mm f/1.8 D has less distortion than Nikon 50mm f/1.8 G? The D is about $80 cheaper, is smaller, lighter, has less distortion, and has manual aperture ...
2
votes
1answer
564 views

Sigma 10-20mm f4-5.6 EX DC HSM or Sigma 10-20mm f3.5 EX DC HSM Lens?

I want a wide angle lens for my Nikon D90 and after reading numerous reviews I think I will go for a Sigma. The only dilemma, which I haven't found an answer for is, which one to go for? The Sigma ...
0
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1answer
1k views

How can one use a reversing ring with Nikon G lenses?

So, this blog (credit to mattdm for pointing it out) says: Firstly, when you turn the lens around you obviously lose the CPU connection between the lens and the camera, so say goodbye to ...
23
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2answers
4k 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 ...
4
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2answers
866 views

Can a fast prime lens simulate a macro lens for food photography?

I read in this thread that macro lenses are considered good for food photography. AFAIK, macro lenses are also used to photograph insects. The lens makes them look giant, and shows up all their ...