Spring 2012

Spring 2012
by ani

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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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12
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4answers
5k views

Is there a drawback in buying an imported (gray market) lens?

I am planning to buy a Nikon 55-200mm lens and I was checking prices at B&H and there is a $30 difference (almost 15% of cost) between "Imported" and "USA" lenses. What is the difference between ...
12
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4answers
8k views

How wide can a lens be before it begins to produce distortion?

Some lenses will produce distortion near a photo's edges (lines that should be straight begin to curve). Fisheye lenses definitely do this, and some ultra-wide lenses will do this too. I like wide ...
11
votes
3answers
936 views

Why are superzoom lenses small but giant telephoto lenses huge?

This week I've read two news stories about two different camera lenses that can magnify things that are very far away. The first is the Nikon Coolpix P900, which is a point-and-shoot camera that ...
11
votes
4answers
1k views

What does 'Equivalent to 1.6x the focal length of the lens' mean?

In the specifications of Canon 550D, about the lens the following is mentioned LENS Lens Mount EF/EF-S Focal Length Equivalent to 1.6x the focal length of the lens Now this is really ...
10
votes
10answers
34k views

Can I shoot a photo with my DSLR without the lens on?

I thought it would be interesting to see what kinds of effects I could get by shooting a photo without any lens on my DSLR. However, when I take the lens off, it tells me that no lens is attached (...
9
votes
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 ...
9
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3answers
3k views

Why is the Nikon 70-300mm f/4.5-5.6G ED IF AF-S VR twice as costly as Nikon 55-300mm f/4.5-5.6G ED VR AF-S DX?

The Nikon 70-300mm f/4.5-5.6G ED IF AF-S VR is almost twice as costly as Nikon 55-300mm f/4.5-5.6G ED VR AF-S DX. Why is that so? The only difference I see is the internal Focus. If that ignored are ...
9
votes
5answers
3k views

What Nikon lens to buy to make photos of birds?

Currently, the zoomiest lens I have is a Nikon 18-200mm. I want to be able to take photos of wildlife, or in most cases birds, which I can't do at 200mm. For a long time, I wanted to purchase a Nikon ...
7
votes
2answers
1k views

Why can only certain Canon lenses be fitted with an extender?

Is there a reason only certain lenses can be fitted with an extender? I'd really love to be able to fit the extender to some of my cheaper lenses.
7
votes
2answers
2k views

Any reason to buy stock lens for Sony Alpha if I already have good Minolta Maxxum lenses?

I am a novice photographer looking to get into DSLR photography. I have an old Maxxum 5 and a couple lenses for it: a 75-300 zoom and a 28-80 zoom. After reading this question, it is clear that ...
7
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5answers
4k views

Are third-party alternatives to the Canon 70-200 f/2.8 worth the price savings?

Has anyone used the 3rd party 70-200 lenses? Are you happy with the quality, or do you wish you had saved up for longer and got the Canon?
7
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6answers
292 views

Is it technically possible to build a camera body to correct for lens defects?

Most lenses tend to be expensive because the lens needs to be very complicated in order to correct for various optical effects (aberration, etc). Is it possible to build a sensor and processor ...
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 EOS-...
6
votes
1answer
717 views

When focusing at max zoom, focus is lost after zooming out. Is that normal?

On my Canon kit lens, I could completely zoom in, focus on the object and then zoom out to take the picture with the object still in focus. Now I have a Sigma 18-200mm (with a Canon 600D) and that ...
6
votes
2answers
204 views

How does sensor size affect the brightness of an image given the same field of view and aperture?

Lets say we have two image sensors, each one with 1MPixel resolution but differing in size. The first sensor has the size 1/3", the other one 1". Each sensor is equipped with a suitable lens (for the ...
6
votes
1answer
5k views

Why Must I Lock The Aperture On My AF Lens On My Nikon D40

I am using the Nikon 50mm f1.8 AF lens on my D40 and the photographs look excellent - I have to manual focus, but this suits me just fine for the portrait shots I'm taking. The problem is that to use ...
6
votes
1answer
780 views

Canon 70-200/2.8 IS (mk1) VS 70-200/4 IS

Currently debating which of these lens to get. The f/4 does have the advantage of being lighter, and there have been reviews that it's sharper than the f/2.8 wide open or with both at f/4. Rather ...
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 ...
5
votes
2answers
139 views

Does “the same” lens, with different autofocus systems, have the same optical quality?

I'll give examples with Nikon only, but the question is pretty general. So, is this a fact or not? Examples: Nikkor 50/1.8G AF-S, Nikkor 50/1.8 AF-D and Nikkor 50/1.8 AF 70-300 AF and 70-300 AF-S ...
5
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2answers
403 views

How does a DX-format sensor support FX lenses?

I have a Nikon D3200 camera. I want to buy a prime lens. I read some reviews online and understand that the "Nikon AF-S NIKKOR 50mm F/1.8G" would be a good lens to buy, but this is a FX lens. Can ...
5
votes
7answers
5k views

What DX Nikon lenses should I look at for concert/club photography?

I'm looking at upgrading my kit for a music photojournalism internship over the summer and I was wondering what the best way to spend $600 was. My current setup is a d7000, a kit lens, a manual ...
5
votes
3answers
856 views

What does it mean that a lens is x millimeters?

Every lens has different focal length in terms of millimeter so if I have a 100mm lens, what does that refer to? Does it mean the length of the lens itself is going to be 4 inches long, or does this ...
5
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5answers
18k views

If I have an 85mm lens for portraits, is a 50mm useful as well?

I recently got my Canon EF 85mm f1.8, after lot of thought over if I should buy Canon EF 85mm f1.8 or Canon EF 50mm f1.4, I decided on 85mm so that I can shoot portraits of people even from a distance,...
5
votes
2answers
2k views

wide angle and macro lens converter or adapter

I'm new to the world of photography and also have a pretty tight budget, so I'm interested if anyone has tried using a wide angle + macro lens converter/adaptor such as this (Forum discussion about ...
4
votes
2answers
601 views

What are the drawbacks of an extender (wide or teleconverter)?

I'm asking a more general question, starting from a particular case with which I'm dealing these days: I'm considering buying a Wide Conversion Lens for my Panasonic HC-X900M camcorder (see the item ...
4
votes
1answer
792 views

What's difference between DSLR and bridge camera lenses?

A typical zoom/telephoto lens can cost a lot but a Canon PowerShot SX40 model has a zoom lens of 24-840mm ! And the camera as a whole still costs less than a single lens. I know that they differ a ...
4
votes
2answers
232 views

How do I best compare lenses?

Recently I purchased a $280 50 mm f/1.4 Canon lens. I've got a few lenses at this point, and I generally buy them on reviews and my needs. I bought this lens to do portraits. I also have a `18 - 55 mm ...
4
votes
5answers
9k views

Should I replace the Canon 18-55mm f/3.5-5.6 kit lens with a 40mm f/2.8 or 50mm f/1.4?

So I'm about to buy my first DSLR (definitely a Canon, probably the 700D) and my original plan was to buy the one with the included 18-55mm f/3.5-5.6 kit lens. At the same time I was thinking about ...
4
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3answers
2k views

How do I avoid dust entering my camera when changing lenses?

Akin to Should I be worried about getting dust inside my SLR? and What should I do to avoid switching lenses?, I have a certain paranoia of dust/debris entering my camera when changing lenses. Are ...
4
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2answers
1k views

What tools and spare parts are needed to repair Canon 200mm f/1.8 USM prime lens?

The focus of Canon 200mm f/1.8 L seems to be entirely USM driven. Manually rotating the black ring has no impact at all on mine, as it is broken. What tool set would be the best I could buy (from ...
3
votes
4answers
2k views

Is optical image stabilization a necessary feature for any lens?

I am looking to buy a decent telephoto lens for my Nikon D3100. A 55-200mm Nikon lens costs almost Rs. 9000 ($144.67) and a Tamron 70-300mm lens costs almost $130 . The problem is that these lenses ...
3
votes
3answers
762 views

Will a filter cause more or less damage when lens is dropped?

I recently dropped my camera bag from around waist level to the ground. The ground is somewhat padded (carpet) and the bag itself has padding (the typical messenger type of bag's padding). The camera ...
3
votes
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
votes
3answers
549 views

What are these spots in my pictures?

Been getting these bubble type things, never happened before (Kit lens - 18-55|camera d3200
3
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3answers
925 views

Image Stabilization in Lens vs Body: Which is Cheaper?

Is Image Stabilization better in the lens or the body? Someone already asked that. But I'm trying to make a purchasing decision. It seems that the short answer to my title question is that it's ...
3
votes
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
votes
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?
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 ...
2
votes
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 ...
2
votes
1answer
2k views

Which 70-300mm lens between the Nikon VR and Sigma? [duplicate]

I am confused about selecting a 70-300mm lens. I have 2 lenses to decide between, the 'Nikon 70-300mm f/4.5 - 5.6G ED-IF AF-S VR' and the 'Sigma 70-300mm F4-5.6 APO DG'. I hear lot of good things ...
2
votes
1answer
4k views

Nikon D3200 does not recognize the Nikkor AF-S 50mm 1.8G

I bought a new Nikkor 50mm AF-S 1.8G to add to my Nikon D3200, however, it will not recognize the lens. It says "Lens Not Attached" in all modes with error "NON CPU lenses can only be used in manual ...
2
votes
2answers
272 views

How can I compare 'super-zoom' lenses to make up my mind which one I should buy?

So I am currently looking to buy a 'super zoom' lens to be used along my 35mm for travelling. I have already compiled a number of different suitable lenses within my budget range and focal length. I ...
2
votes
5answers
1k views

Should I buy this Nikon 50mm f/1.8?

I've got an opportunity to buy a Nikon Nikkor 50mm f/1.8 AF-D prime lens for £75. Has anyone used this lens who could give an opinion? The reason I'm looking into buying it is that in an earlier ...
1
vote
1answer
896 views

How to fix a zoom lens that is sticky at a particular focal length?

I have the Canon 18-55mm lens. When I zoom out from 55mm to 18mm, the lens works fine until 22mm, where it seems to be stuck and you must then use a bit more force. I saw in many sites that this is ...
1
vote
1answer
530 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 ...
1
vote
4answers
730 views

Why does crop factor apply with APS-C lenses, and why aren't these brighter than FF ones at same aperture?

I know that the image circle of FF-lenses is bigger than it needs to be on APS-C sensors, thus the FOV spears narrower. I've heard that APS-C lenses sit closer to the sensor, thus projecting a smaller ...
1
vote
3answers
198 views

Does rotating the focus ring in AF mode cause any harm?

If I rotate focus ring in AF mode, does this hurt the camera or lens? My friend today rotated the ring 1/2 times before I saw him on Autofocus on my Canon 600d with lens: EF-S 18-55mm 1:3.5-5.6 III. ...
1
vote
1answer
264 views

Why do I get blurry pictures when I take a lens attachment off?

I bought a Canon D3300 bundle. This is my first dSLR. It came with a couple lenses. On Easter, I decided to use a wide angle lens to get all the action. Now I can't use my camera without this lens ...
1
vote
3answers
165 views

Would an EF 24-105L or a 70-200 f/4L be a better travel choice?

I currently have a Canon 7D Mark II. I have a budget where I am looking at getting the Canon EF 24-105mm f/4L IS USM or the Canon EF 70-200mm f/4L IS USM. I am undecided on which one to get. I can see ...
0
votes
2answers
547 views

Can Tamron 16-300mm Macro Lens fit to Canon EOS 600D?

I use Canon EOS 600D and I want a lens with a larger range. I found out Tamron 16-300 f/3.5-6.3 Di II VC PZD Macro Lens, I added it into my wishlist. I did some research on it and I'm scared that it ...