Napioa - Wind Origins

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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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6answers
475 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 ...
18
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2answers
1k 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 ...
2
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1answer
13k views

Image Quality of Canon 18-135 IS compared to 28-135 IS USM?

I have the Canon 28-135 IS USM lens and I am pondering replacing it with the newer 18-135. I know I'll be giving up the USM and FTM focus and gaining 10mm on the wide end (replacing my old kit ...
2
votes
2answers
548 views

What is the difference between these similarly-named Canon macro lenses?

I'm looking to buy a macro lens but I'm unsure which one is best since the names are very similar. Other than the price, what is the difference between the Canon EF 100mm F2.8 L Macro IS USM and ...
7
votes
3answers
234 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 ...
4
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5answers
321 views

Apart from birds/wildlife and sports what are some “artistic” uses for telephoto lenses?

I mean no offence to birders and sports shooters, but I don't practice those types of photography. So what other types/styles of shooting can be done with long (200-300mm+) lenses, other than the ...
6
votes
2answers
3k views

What does “N stops” mean when describing an image stabilizer?

If you ever purchased any lens with IS then you have heard this term like "3 Stop Stabilization" or "4 Stop Stabilization". Now, I am familiar with this Stop for ISO and Aperture. But this I don't ...
6
votes
3answers
4k views

What are “Depth of field and focus scales”?

I'm reading Kurt Munger's review of SAL75300 (Sony's 75-300mm F/4.5-5.6 lens) and I noticed the entry "Depth of field and focus scales? Nothing" in his summary table. Now, I know what depth of field ...
3
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5answers
1k views

Which lenses should I take on a honeymoon trip to Alaska?

Newbie photographer here and really hoping for some expert advice! I go to Alaska on honeymoon in July and really need some advice on lenses. My camera is the Canon EOS 1100D (told you I was a ...
7
votes
4answers
1k views

Where can I get an extension tube for micro-four-thirds lenses?

There doesn't seem to be any extension tube set listed on the m4/3 section of the Four Thirds website. Olympus makes the EX-25 extension tube but it's for regular Four Thirds lenses. I would like to ...
2
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5answers
5k views

Sigma 150-500 f/5-6.3 vs Sigma 50-500 f/4-6.3 for birds in flight?

Finally made the decision to buy a Canon 7D for my wife. Her photography is continually improving. Flying bird and distance photography with her existing canon EOS 450D and 70 -300 lens. Can someone ...
10
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9answers
27k views

What lenses are must-have yet affordable for a Canon T2i camera?

I have a canon T2i camera. I am beginner looking for some tips on the best lenses to carry around.
3
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1answer
1k views

Panasonic GF3 with 14mm pancake lens - which macro lens will fit?

I wonder if anyone can advise me? I have the panasonic gf3 with a 14mm lens. Is there a macro conversion lens I can buy (apart from the new panasonic one) - haven't had one before and so wanted ...
8
votes
2answers
5k views

What does “Non-Mfg Zoom Lens” mean?

When I was surfing keh I found "Non-Mfg Zoom Lenses" and "Non-Mfg Fixed Focal Length Lenses"? What is the meaning of "Non-Mfg"?
16
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2answers
4k views

What is the benefit of an internal focus lens?

The "IF" in Pentax DA★ 200mm f/2.8 ED (IF) SDM stands for "Internal Focus". I know what this means: the lens doesn't change in size as I focus. (And it's true; it doesn't.) What's the point of this, ...
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3answers
4k views

What is the reference point that the focal length of a lens is calculated from?

I understand the idea of a focal length for a single lens, i e the distance from the lens to the point at which parallel rays of light converge. However, in the case of a photographic lens with ...
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1answer
332 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
1k 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 ...
33
votes
2answers
3k 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
votes
5answers
3k 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
12k 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 ...
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1answer
315 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
votes
3answers
186 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 ...
8
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2answers
975 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
votes
1answer
366 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 ...
2
votes
3answers
868 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 ...
4
votes
3answers
7k 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 ...
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3answers
679 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 ...
7
votes
4answers
454 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
vote
2answers
565 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 ...
3
votes
1answer
147 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 ...
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6answers
2k 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
26k 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
votes
2answers
917 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
970 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?
1
vote
4answers
10k 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 ...
1
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2answers
150 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
10k 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 ...
-3
votes
1answer
355 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
votes
3answers
1k 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
votes
2answers
622 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
3k 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
6k 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
vote
1answer
514 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 ...
5
votes
3answers
5k 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 ...
1
vote
2answers
938 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
vote
6answers
1k 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
937 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 ...
9
votes
3answers
3k 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
334 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 ...