Nidelva river through Trondheim Norway

Nidelva river through Trondheim Norway
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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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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 ...
5
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3answers
6k views

Is a 50mm f/1.8 or a 55-200mm f/4.5-5.6 a better lens for portraits, and why?

I just recently bought "Canon EF 50mm f/1.8 II" for a Canon rebel T3. This was about $100. I just came across "Canon EF 55-200mm f/4.5-5.6 II USM" which is only about $40 more right now. My wife ...
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6answers
3k views

Is a UV Filter required/recommended for lens protection?

Is it still required/highly recommended that I buy a UV or similar filter to 'protect' the front element of my lens? I ask because this advice has been around for 30 years and you would think that ...
8
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6answers
12k views

How do I get the 'equivalent' focal length for a DSLR lens for my camera?

On my Nikon D3000, how do I figure the focal length equivalence? In other words, if I want a lens that is just like a 50mm lens on a 35mm film SLR, I need to multiply by a factor. What is the factor, ...
3
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2answers
3k views

Will a prime lens help me get better portraits at a wedding?

I have a Canon 600D with the EF-S 18-55mm f/3.5-5.6 IS lens. I have a friend's wedding coming soon, and I'm not sure if my zoom lens will do a good job or not. I was thinking of buying a prime lens so ...
3
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1answer
425 views

What material should be used in making a heat resistant lens?

What kind of lens (what material(s) should it be made of) can withstand very extreme temperature changes? I'm trying to use a camera in temperature ranges of approximatly 60 to 400 degrees Fahrenheit ...
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3answers
312 views

What normal lens would have better edge sharpness than Pentax SMC Takumar 28/3.5 on my Canon APS-C DSLR?

I'm using Canon 450D + SMC Takumar 28/3.5 for nature shooting for a couple of years. And I'm not satisfied how it works. Now I have the option to buy something else and upgrade my wide-focus lens. ...
10
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3answers
3k views

Are the Canon 15-85mm + 50mm f/1.8 adequate substitutes for the 17-55mm f/2.8?

The EF-S 15-85mm lens is a relatively recent lens, and I haven't seen too many recommendations on it thus far. However, most of the reviews have been very positive and the lens is said to be optically ...
7
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5answers
3k views

How much different are the Tamron 17-50mm f/2.8 stabilized (VC) and non-stabilized versions?

I have seen these 2 lenses being suggested by many people across the site as general purpose zooms and an upgrade to the typical 18-55mm kit lenses. The price difference seems to be around $200 (~INR ...
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2answers
726 views

How can I best shoot moving objects using Canon XTi?

How do I shoot moving objects using my Canon Xti? I mean, what mode I need to keep my SLR (AV,P or TV) and what should be ISO and focal and other settings. I am using canon 55-250 IS lens.
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2answers
1k views

Why does Zeiss manufacture only manual focus lenses?

I've heard that Zeiss's quality is very good/great but I'm also curious if it has anything to do with the "manual focus only". I have read this question but it only partly addresses my question. Is ...
15
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7answers
3k views

What are the real-world differences between Canon, Sigma and other third-party 70-200 f/2.8 lenses?

I'm getting started with wedding photography, and was looking for a fast telephoto zoom to compliment my Tamron 17-50 f/2.8 (on a Canon 500D/T1i). After extensive online research, the 70-200 f/2.8 ...
7
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2answers
1k views

Why are some lenses so expensive?

I have read about and seen many lenses that are very expensive; upwards of 8-10 thousand (US) dollars. I ran across this lens and it was priced at an incredible 26,000 dollars. And this one at ...
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3answers
25k 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 ...
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 ...
2
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1answer
397 views

Is Sigma 50-500mm EX DG HSM lens compatible with a Nikon D90 body?

Aloha, Can anyone tell me if the Sigma 50-500mm EX DG HSM lens (non OS model) is compatible with a Nikon D90 body? I recently purchased this lens on eBay but it seems that the lens will not ...
24
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3answers
4k views

Why do wide angle prime lenses have relatively small apertures?

I've noticed that many of the wide angle prime lenses (at least for Canon) have somewhat smaller apertures than their normal or telephoto counterparts. E.g. the regular Canon 24mm prime is f/2.8 while ...
20
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4answers
5k views

Is it true that there are no stabilized prime lenses (and if so, why)?

Fast prime lenses like the Canon 50mm f/1.4 lens work nicely in low-light situations. But I'm quite sure they would work even more nicely if they had optical image stabilizers. It seems to me that no ...
4
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2answers
387 views

How rapidly does the focal length-equivalent image change by physically moving the camera?

I have recently begun moving from a Nikon APS-C DSLR to the Micro Four Thirds camera while also transitioning from using a viewfinder to using the LCD screen for framing my shots. Because of the size ...
6
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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' ...
3
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1answer
331 views

How can one measure the autofocus performance of a lens?

Many of the lens reviews tend to comment on their autofocus performance, but they seem to be mostly subjective in nature (fast, slow, hunts around etc). I understand that the autofocus performance is ...
12
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4answers
316 views

Does it make sense to get a non-macro and a macro of similar focal lengths?

I recently asked a question on which prime lens to get after the kit lenses, and in my shortlist of lenses there was quite a lot of overlap of focal lengths along with macro & non-macro versions ...
9
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5answers
3k views

Are lenses for my Canon Rebel XT compatible with the Canon 7D?

I am looking to purchase a 7d and currently have an XT. How do I find out if the lenses I have are compatible with the my new potential camera?
10
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3answers
2k views

Does the size of the front glass mean anything?

Considering the Nikon lenses: Prime lenses: AF Nikkor 14mm f/2.8D ED has a huge front glass (●₃), AF-S Nikkor 50mm f/1.8G has a tiny little front glass, deep inside the body (∙₁), AF-S VR Nikkor ...
2
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4answers
2k views

Where to buy used Nikon lenses in the USA?

What are some of the sites available for buying used lenses for the Nikon D-90 camera body? Do any specialize in Nikon or have enough supply to deeply cover Nikon lenses?
8
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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. ...
6
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3answers
13k views

What does “the telephoto end” and “the wide angle end” of a zoom lens mean?

In the Canon Rebel T3i Manual, page 59, it's mentioned that "If you have a zoom lens, use the telephoto end to fill the frame with the subject from the waist up." Same note on page 61 and another one ...
4
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4answers
3k views

When would one choose a 50mm f/1.4 over 85mm f/1.8 (or vice versa) for portraits?

Say you are using a crop body, and you have both 50mm/1.4 USM and 85mm/1.8 USM lens in your bag. Now, you want to take a portrait where there is adequate light and space, and you have decided to take ...
10
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6answers
2k views

Which prime lens to get after the 18-55mm & 55-250mm?

I started out with the 18-55mm IS kit lens on my Canon EOS 550D over a year ago, and added the 55-250mm IS a couple of months back to augment my telephoto reach (based on the recommendations in one of ...
9
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1answer
1k views

What's the small white plastic dome on old Pentax lenses?

My old Pentax lenses have a small white dome between the aperture ring and the focus ring. See the photo below: The clear white dome calls to mind the larger white plastic domes used in light ...
3
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4answers
2k views

Which lenses typically don't focus properly on the Canon 60D?

I currently have the 18-200mm kit lens for my canon 60D. I am thinking of getting the 10-22mm wide angle lens as a second lens. So far with my kit lens I havent experienced any focusing problems or ...
2
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0answers
277 views

What to do about mold/fungus in a camera lens? [duplicate]

Possible Duplicate: Why fungus form in lenses, and how to get rid of it? I am living in a tropical country where humidity is pretty high. I never thought it would be possible that ...
8
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3answers
300 views

What are the standard tests available to quantify lens parameters?

In some of the questions I have asked here, some of the terms frequently used to describe the difference in image quality between the cheaper lenses and the premium ones have been increased contrast, ...
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0answers
78 views

What are some good online tools for finding compatible lenses? [duplicate]

Possible Duplicate: A website that can help me in choice of new lens? Where can I find reviews of lenses? What online tools are available to find compatible lenses for a given camera?
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0answers
73 views

What limitations will typically be found on the average stock lens for DSLR's? [duplicate]

Possible Duplicate: What are the limitations of a typical kit lens as a general purpose lens? I'm new to photography, and have a Nikon D3000 with the stock lens. What I'm wondering is, what ...
9
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4answers
2k views

Is it possible for a lens to produce too much contrast?

I came across a complaint that a certain lens produces too much contrast. The lens was described as rendering "cartoonish" contrast when shooting a portrait with diffused light from a window, where ...
2
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3answers
3k views

Which lens should someone who enjoys the Canon EF 50mm f/1.8 get next?

I bought a Canon 550D months ago, and at that point I chose the 50mm f/1.8 because it was super affordable and quite popular. I must say I've taken some really wonderful photos with it; mostly with ...
15
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8answers
23k views

Is it a wise-decision to buy full-frame lenses for use on an APS-C body?

I have a Canon 550D which I've been using for around a year now. I really love it and have learned a great deal with this and the 18 - 135mm kit lens. But now with experience I feel the need to get ...
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7answers
2k views

What hobbyist landscape lens should I get to go with my Nikon D90?

I am not a professional photographer but only enjoy it as a hobby. I have a particular interest in macro photography. I travel a lot to explore new places and most of my photography work happens to ...
6
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6answers
2k views

Is it important that the Canon 1DX isn't specified to autofocus with lenses slower than f/5.6? [closed]

Seeking the lens market AND the related info WRT Canon 1D X, I found some things which seems concerning: 1st, a note from Canon's Chuck Westerfall (see here) saying: “AF is unavailable on the ...
13
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4answers
45k 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?
54
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5answers
2k views

Is there development in the world of lenses?

Now, I'm not an expert, so if this post makes you laugh, you're welcome. Still, as far as I know there are basically two components that determine the potential quality of a camera's photos: Sensor ...
0
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2answers
947 views

How can I decide which lens to prioritize between Tokina 11-16 or Canon 15-85?

I currently have a Canon T3i with a 50mm f1/8, 18-55 kit, and 55-250 f/4.0-5.6. I love the 50, but outside of setup shots, I seem to grab the 18-55 mostly just for the flexibility. (Mostly used on ...
3
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4answers
5k views

Why am I getting soft images with my Sigma 24-70 f2.8?

I recently purchased a Sigma 24-70mm f2.8 lens which I am using on a Canon 40D body. Around 8 of 10 shots were soft, regardless of subject matter. Exposure, white balance etc. all looks fine. I only ...
2
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3answers
412 views

Should I upgrade my camera or lens to shoot pro hockey games?

I've gotten the opportunity to shoot pro hockey games. My current gear doesn't cut it: Nikon D70 Nikon 18-70mm F/3.5-4.5 Kit lens Nikon 70-300mm F/4-5.6 D Nikon 50mm 1.8D Monopod From where i'm ...
1
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7answers
5k views

What single zoom lens should I take on a vacation to Europe?

My wife and I are planning a trip to France and Italy next year for a couple of weeks. We will be hitting many of the popular destinations such as Paris, Rome, Venice, Florence, etc. I currently own ...
5
votes
2answers
410 views

How to shop for a lens filter?

What should I consider when shopping for a lens filter? I see filters that range from $15 to $115 and more. What are the differences between the $15 and the $115 filter? I'm asking in the ...
7
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1answer
1k views

What are the differences between two generations of Canon EF-S 55-250mm f4-5.6 IS?

I was going to buy Canon EF-S 55-250mm f4-5.6 IS lens from eBay. But I saw there is a another lens available as MK II with same focal lengths. I googled to find difference between above lenses, but ...
1
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1answer
602 views

How well does the Tokina AT-X 16-28 F2.8 resist flare?

Nowadays (among other projects) I'm shooting candle lights in churches (using mostly long exposures) using a Canon 17-40mm F4. (A small part of) The results are here. I'm thinking now to buy a Tokina ...
3
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0answers
345 views

Why do I have a red dot in every photo? [duplicate]

Possible Duplicate: Why is my camera showing a lot of stuck red and white pixels? Every picture that I took today have a red dot on the same place in every photo. It looks like a monitor ...