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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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3
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2answers
176 views

Fixing chromatic aberration automatically with software

I am trying to fix chromatic aberration in images taken with wide lens industrial cameras. Searching the internet I didn't find a good software to do so. I tried Hugin and a few others, but without ...
1
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2answers
2k views

Is Canon 16-35/4 IS better than 16-35/2.8 II at f/4?

I have had a 16-35/2.8 II for almost a year, but it broke and I might be in the market to replace it. Last week I saw that Canon had released a new lens in this range, but with f/4 and IS. Is Canon ...
3
votes
1answer
179 views

Is there a comprehensive list of available (possible) adapters between different lens mounts?

When buying old dirt cheap lenses for use in modern cameras with the help from adapters, the flange focal distance is always limiting factor. The article about flange focal distance lists the ...
1
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2answers
100 views

Compability of Kenko DGX PR0300 2.0X C-AF F4.5 for Canon and a Canon 55-250mm lens

Can the Kenko DGX PR0300 2.0X C-AF F/4.5 Lens for Canon (Black) be used with a Canon 55-250mm lens?
4
votes
2answers
417 views

Should I leave the lens switched to AF or MF for storage?

When I'm not using the camera, or when the lenses are packed at home, should the lens switch be at AF or MF? Or does it make no difference? And by the way, is it better to leave the lens on the ...
1
vote
2answers
139 views

How to focus manually with a Nikkor AF-S DX VR 50-200mm f/4-5.6G zoom lens?

I have a Nikon D3100, for which I just bought a Nikkor AF-S DX VR 50-200mm f/4-5.6G zoom lens. This is a CPU lens and works very nicely in auto-mode, i.e. when you let the camera set the focus. ...
2
votes
2answers
1k views

Samyang 14mm or Rokinon 8mm fisheye? Which is better for landscapes?

My camera body is a Canon 550D/T2i. Which one would be better for landscapes and why?
6
votes
3answers
169 views

How do I rig up a color filter for my Sigma 8-16mm Ultrawide?

I am a bit confused... I'm not sure if the cokin system will work on my lens, as my lens doesn't have threads for a filter. I've found that placing a Z series cokin filter in front of the lens will ...
2
votes
1answer
125 views

Moon photography [duplicate]

Hi I am a photography hoobyist. At the moment I am using a Nikon D3100 with the standard kit lens (18-55mm). I am interested in taking photos of the moon. I am debating whether to buy a 55-200mm lens ...
1
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2answers
862 views

Can I put different lenses with a lens adapter on a point and shoot?

I have the Nikon L830 advanced point and shoot camera. It's not a DSLR. Can I put a different lens with a lens adapter on my camera? I want to do that to have more control on the focus and the depth ...
3
votes
3answers
286 views

Variable focal length for macro lenses?

True macro lenses come in fixed focal length. Are there any macro lensens which have variable focal lengths? And please explain why yes or why not?
0
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2answers
3k views

Does a Canon STM lens autofocus more quickly and accurately on a high-end camera body?

There are incredible reviews on the new Canon STM lenses: https://www.youtube.com/watch?v=ho0hOhRSuHk Does autofocus perform better on a 7D body, compared to an entry-level 700D body, for example? ...
3
votes
2answers
326 views

What lens should I use to be able to fill the frame with a mounted 35mm slide at 12 inches?

Objective: Digitize thousands (~7500) mounted 35mm slides as quickly as possible (without using a paid service), about 1,000 before Father's Day. Equipment: Kodak Carousel 750H Projector Nikon ...
0
votes
1answer
80 views

Why is the external lens for my smartphone blurry when not at full zoom?

I've just bought an optical zoom lens for my Samsung S4 (I'm a web developer and blogger so I thought that it would be a handy tool for taking photo's when out and about without my main camera). The ...
0
votes
2answers
268 views

Are there disadvantages to an adapted Canon EF-S zoom vs Sony SEL 18-200 lens for my Sony Nex?

I want to buy a universal zoom lens 18-200 (maybe 18-135) for my Sony Nex. At Sony I found only Sony SEL 18200 lens that is expensive. There are adapters Canon EF-S to Sony E-mount (with providing ...
1
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0answers
52 views

How to take pictures of plankton? [duplicate]

I've been wondering how people take pictures of plankton. I have no idea what kind of lens, setup and adaptors are needed to take shots of plankton? I guess you need a microscope of sorts but after ...
3
votes
1answer
120 views

Do lenses have focal planes or focal spheres/ellipsoids?

The title says it pretty much all. I'm asking this because I find myself always using the focus point in the center, and after I focused, I rotate my camera to make the framing right. However, if ...
0
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3answers
196 views

Should I upgrade my Canon body or lens for upcoming travel?

Having trouble deciding what to do. I am about to go on my honeymoon to Borneo, with lots of jungle tours, and wildlife spotting. I have a Canon XS with a kit 18-55 and a 75-300 non IS. I don't use ...
0
votes
1answer
246 views

Purchasing a6000: but what lens to buy? [closed]

I'm not a professional by any means but I currently own a Rebel t3 but looking to get a good camera that's much smaller as we often times leave the Rebel behind since it is so large. I think I've ...
2
votes
4answers
1k views

35mm vs 40mm: Does it matter?

I want to buy the lens Voigtlander Nokton 40mm F1.4, $449 Voigtlander Nokton 35mm F1.4, $629 I am asking, why the slightly difference in focal length, the price difference in so much as $180? ...
0
votes
3answers
350 views

Upgrading from Canon T2i to Canon 6D

I want to upgrade my camera from Canon t2i to Canon 6D, Can I use the same lenses i already have ??? Lenses I own are, Canon 58mm Canon 75-300mm f/4.0-5.6 III AF Canon-EF 50mm f/1.8 II Rokinon ...
3
votes
3answers
300 views

How to clean shattered UV filter glass from Lens?

I have a camera lens where the UV filter shattered when it was in my camera bag. I was able to remove the filter, but there's bits of glass on the lens. I currently just put the lens cap back on and ...
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votes
2answers
57 views

How to use TC's with Canon lenses [closed]

If I shoot a Canon 70-200 f/2.8 which extender should I use to double my focal length?
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0answers
53 views

Lenses for India trip on a Canon 7D [duplicate]

I plan to take my Canon 7D to India and I currently have a 12-24 Tokina and the Canon 50 1.4. Is this a good kit for India? I will be photographing anything I can really - I do not mind taking ...
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3answers
1k 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) ...
1
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2answers
336 views

Will the petal-shaped “HB-45 II” lens hood work with my Nikkor 18-55mm?

I am going to buy a lens hood for my AF-S DX NIKKOR 18-55mm f/3.5-5.6G VR. I searched and I found out that the best lens hood is Nikon's HB-45 lens hood. However, I also found a newer version, the ...
0
votes
2answers
598 views

Will dust inside a lens affect the image in any way?

I have been looking at purchasing a used lens and in the listed it says something along the lines of "There is dust visible throughout the lens, but this will not affect the images in any way" Is ...
1
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2answers
216 views

How can I increase the amount of 'keepers' from my Nikkor 50mm 1.8D

I have been using this lens for a while, mostly for portraits and have noticed that for some reason the outdoor pictures where I most likely had to quickly compose and take the shot have had something ...
0
votes
3answers
81 views

Travel Lens to UK [duplicate]

My family and I are planning to visit UK in October. My agenda is; 1. Visit old architecture of Bath 2. Strafford upon Avon 3. Lake District 4. Pitlochry 5. London I will travel with Nikon D7100 and ...
0
votes
1answer
109 views

What are the pros and cons of different lenses on the end of a long macro bellows

I just picked up a vintage 300mm bellows with a 50mm lens on the M42 screw mount, but the lens is kinda foggy and scratched. What would I gain or lose with different focal lengths for a replacement ...
3
votes
2answers
211 views

How do I separate a stuck Nikon 400mm f/2.8 AF-S (non-VR) lens from a D800E body?

I purchased a factory refurbished 400mm f/2.8 AF-S (non-VR) lens a year ago from Nikon USA. Two major malfunctions happened. To me, both seem to be related to a little metal lever inside the lens's ...
1
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4answers
270 views

Having difficulty with choosing a wide-angle lens for Canon

I have got Canon 450D Kit and I would like to purchase a new Canon lens. Not too pricey. Main purposes are to shoot landscapes and portraits at the same time to have decent zoom. I had a look at EF ...
1
vote
3answers
552 views

What Lens would i use to photograph a football game? [closed]

I have an assignment and one of the questions is asking what lens would I use at a football game. I have a press pass so it allows me to the field. They would like high contact physical frozen shots. ...
-3
votes
1answer
110 views

Holiday lens - 18-200 or 18-250 [closed]

I'm off on holiday soon and I want to get an all-around lens which I'm sure is one of the most read topics on the internet. I have a Canon 450D and I've been looking at the Canon or Sigma lens as they ...
0
votes
0answers
31 views

Nikon 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 ...
0
votes
2answers
429 views

Canon 18-135mm macro capability vs 100mm macro lens

I have a Canon 550d, and intend to take insect/flower closeup/macro shots. But I am not sure what the difference is between the Canon 18-135 lens vs a Canon 100mm Macro lens in terms of their macro ...
2
votes
2answers
550 views

How to tell whether a lens has an autofocus motor or not?

I have to buy a lens and I have a Nikon d7000. I want to know which lenses have AF motors and which do not, as the D7000 has an AF motor built into the body. How do I tell whether a lens has a motor ...
8
votes
1answer
357 views

How do lenses vary in contrast?

I was reading a review of a wide-angle lens, and the review opined that the lens had impaired contrast wide open. Optically, what's happening here? How does the light passing through the lens lose ...
6
votes
4answers
1k 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 ...
0
votes
1answer
389 views

Can you take a picture of a milky way on a canon EOS 300?

I really want to take a picture of the Milky Way using my camera. I'm not sure if it is able to pick it up? The lens I am currently using is a Canon EF 55-200mm. Should I be able to this?
0
votes
2answers
136 views

How to shoot photo with the sun fully surrounding foreground subject

I saw this artwork for Daft Punk's "Get Lucky" song and it begged the question "How was that shot?" My guess is an extreme telephoto lens allowing the sun and the band to be visually compressed ...
0
votes
1answer
96 views

Aperture and field of view - percepted by eye vs camera

I very well informed and I know about how aperture works and why is it not restricting field of view, but I somehow cannot get around the following: Aperture doesn't restrict field of view for the ...
1
vote
2answers
87 views

How to accurately calculate size in image using relations and a reference

OK so the relation math is easy enough. If you know the size of an object, say a 12" ruler in the image, and you put the ruler flat against another object like a door. You take a picture of the door ...
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2answers
1k views

what is the nikon equivalent to canon lens L series EF 24-105 f4?

I'm thinking of going full frame and I can't decide between nikon and canon. The Nikon d610 would be my preferred choice because of lower price compared to canon 5d III, however the latter has that ...
0
votes
1answer
54 views

Help to choose lens [duplicate]

I recent got 60d and EF-S 18-55mm Lens and i want to buy 1 more lens specially for product and fashion(portrait) photography... I decided EF50mm f/1.4 USM and EF85mm f/1.8 USM? Which one would be ...
1
vote
2answers
177 views

How does Rokinon 24mm f/1.4 image quality compare between f/1.4 and stopped-down to f/4?

I have a Rokinon 14mm f/2.8 lens that I use as my go to for dark sky imaging with my full frame camera and it is amazing. However, I just bought a Rokinon 24mm f/1.4 lens for my crop sensor camera so ...
2
votes
3answers
127 views

Can gripping a lens too hard cause softness/aberration or other damage?

I have a Nikon D80 kit lens with a circular screw-on polariser filter. In order to remove the filter I might have to grip the lens quite hard, and the end of the lens might be moved about in the ...
2
votes
3answers
318 views

What do the specifications mean on the Canon G15's lens?

I am quite new to photography, but spent some days understanding aperture, timing, zoom and ISO. Now I see the values printed on the Canon Powershot G15´s lenses, and I can´t interpret them. I ...
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2answers
489 views

How can I mount an EF-M lens on an EF-S camera?

How can I mount an EF-M lens (22mm, for example) on my Canon Rebel T4i EOS EF-S?
1
vote
1answer
1k views

Will 18-55 and 55-200 lenses give me the same zoom abilities as a single 18-200 lens? [duplicate]

I'm new to cameras with interchangeable lenses. I'm looking at a 18-200mm zoom lens or a 55-210mm zoom lens. I already have an 18-55mm lens. Is it fair to say that an 18-55mm lens, combined with ...