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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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6
votes
1answer
442 views

Why do lenses have different diameters?

Why do lenses (full frame) have different diameters? Does this difference affect the image circle? Whats the significance behind this? For example Nikon AF-S 70-300 has 80mm diameter and Nikon AF-S ...
2
votes
1answer
674 views

Is this sound normal for a Nikkor 55-200 VR?

I just bought a Nikkor 55-200 mm 1:4-5.6G ED for my D5000 and I found that if VR is enabled two things happen after I half press the shutter, wait for the lens to focus and release it: I hear a ...
2
votes
4answers
2k views

When should I turn off image stabilization? [duplicate]

I've read a bunch of the questions here about image stabilization, but I don't see any concrete examples/proof or references with regards to the benefits of turning off image stabilization. I've got ...
2
votes
1answer
131 views

Does security scanning a camera with battery inside cause damage to the sensor?

I was at 911 memorial last week. My Fuji S-1 Pro camera was scanned with the battery installed. Security personnel would not let me remove battery. Since then, a dark spot shows up on photos. This has ...
1
vote
1answer
133 views

Lens cleaning pen - disappointed by results, is this working right?

I just got one of these for the first time, a lot of threads on here recommend them and they seem like a great idea. Bought a Nikon one from amazon for $8 and while I really like the brush it seems ...
2
votes
4answers
864 views

Are there any lenses have smaller apertures than f/32?

While most photographers prefer fast lenses that range down to f/1.2, are there any lenses that go smaller than f/32? If there are, what is so special about those lenses that an aperture of f/32 ...
2
votes
2answers
206 views

Can wobbly lens parts significantly affect lens performance?

On one of my zoom lenses (Pentax DA 18-55mm WR), the inner barrel and focusing ring suddenly started to come a bit loose (not sure how, I handle it carefully). They can now move around a millimeter or ...
3
votes
4answers
367 views

What to do with 2nd hand sale of a lens showing oil/moisture coming out of the focus ring?

I just bought a used Canon 28-105mm and when I got it in the mail there was some weird shiny substance, possibly like oil, coming out of the focus barrel. Without thinking I wiped it off because at ...
0
votes
2answers
703 views

What is a good lens for a Canon 5d for birds/wild life with a budget of 1500 dollars

I am planning to buy a Canon 5d mark III, for landscape, wild life and bird photography. What would be an ideal lens with a budget of 1500-2000 dollars? And specifically, what is your opinion on the ...
2
votes
1answer
1k views

How to fix stuck aperture?

I have a Micro-Nikkor 55 mm 1:2.8 lens. The aperture appears to be stuck. Is it worth trying to repair the lens? Are there any good guides for disassembling the lens?
2
votes
4answers
3k views

Should I invest in E Mount lenses?

I never bought any lens. I always used kit lenses of my cameras. Now that I own a Sony NEX camera and I love it, I'm wondering if it's a good investment to start buying E Mount lenses for my camera. ...
1
vote
2answers
754 views

How can I repair a kit lens with a stuck auto/manual focus mode switch?

Recently got a Nikon D5100. After a few days I realized that I can't focus in manual mode. The auto-manual (A-M) switch on the lens seems to be the issue (I have to press the switch hard to manually ...
3
votes
2answers
300 views

How much versatility does a 85 mm lens have?

Can it be effectively used for landscapes as I am not a portrait shooter? This may be first "prime" lens so I need to understand what it's usable for. How far of a "range" does it have as far as ...
4
votes
2answers
2k views

What do I need to use a Nikon El Nikkor 50mm 2.8 enlarging lens with a Canon 5D mark II?

How can I connect the Nikon el-nikkor 50mm f2.8 enlarging lens to my Canon 5D Mark II? What adapter / reversing ring do I need?
0
votes
1answer
511 views

What is the better Nikon primes among 50mm/1.8G, 50mm/1.8D and 35mm/1.8G for my D3200? [duplicate]

which is a better prime lens for my Nikon D3200? nikor 50mm f 1.8g or nikor 50mm f 1.8D or nikor 35 mm f 1.8G ?? nikor 50mm f 1.8 is much cheaper. Though money is a constraint for me if the other ...
4
votes
4answers
440 views

Lens Cleaner Recommendations

What is, in your opinion, the best lens cleaner? Which do you think is the most effective/best value for your money/most easy to use, etc. Please include advantages/disadvantages as well as price and ...
1
vote
2answers
164 views

Lens won't focus except in video mode, and makes a funny noise: what's wrong?

My 18-55mm AF-S Nikkor lens seems to be faulty. It makes a funny noise when it tries to focus and can only focus at a close distance, not at a long distance. The shutter is very sluggish and slow. It ...
3
votes
2answers
392 views

Does high reflectiveness of digital sensor lead to poor lens performance?

I Googled film vs dslr and found an article from 2007 that said: Digital sensor has higher reflectiveness than film. The light bouncing back from sensor will cause flare and lead to poor optical ...
1
vote
2answers
3k views

Why would I use a rear gelatin filter over a front filter?

Lenses such as the Canon EF 17-40mm f/4 L USM offer rear gelatin filter holders, but also accept front filters via a 77mm screw on type. If I was using a circular polarizer, I would need to put it on ...
4
votes
4answers
2k views

How to learn to predict which lens to use between a 14-42mm and 40-150mm?

I am a beginner who has bought Olympus EP-3 and it is my first camera with interchangeable lenses. My two lenses are: M.ZUIKO DIGITAL 14-42mm 1:3.5-5.6 II R and M.ZUIKO DIGITAL ED 40-150mm 1:4.0-5.6 ...
7
votes
7answers
5k views

How does the Canon EF-S 15-85 IS USM compare to the EF 24-105mm L as an all-around lens?

I am looking for a upgrade from my kit lens to a lens with much more potential, a lens that would be an all-rounder for me. After some research I ended up with these two in the final list: Canon ...
1
vote
2answers
4k views

How do I choose among the following lens of 55-250 IS, 70-300 IS and VS 75-300?

Sorry by this specific question, but I'm pretty crazy here looking for a difference. I've got to buy a lens tomorrow (I leave my country in 2 days) I could see the difference between 55-250 and ...
8
votes
7answers
30k views

Why is my Nikon 50mm f/1.8 giving me an fEE error?

I have a AF Nikkor 50mm f/1.8. When I have the aperture setting on the lens to 22 I can take photos. But when I change the dial to anything other than 22(lowest f/stop) then I get a flashing fEE ...
1
vote
1answer
634 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
votes
3answers
112 views

Standard zoom lens recommendation [closed]

Am planning to buy a zoom lens for my upcomming trip.I have Canon650D and Tokina 11-16 lens with me .My clicks mainly involve landscape, architecture. I want to know out of the below lens which I one ...
2
votes
4answers
824 views

Beginner lens decision [duplicate]

I'm about to buy a Nikon D3100 and can't decide which kit lens I should pick. On the one hand there is the standard AF-S 18-55mm VR lens and on the other hand the AF-S 18-105mm VR. A bit more zoom ...
0
votes
2answers
212 views

Is it the lens or is it the camera producing a black blob on every photo?

Is it the lens or is it the camera producing a black blob on every photo? How can I tell which is at fault? It is a used Nikon camera kit I have just purchased and there is only one lens so I can't do ...
6
votes
1answer
865 views

What is Power Focus on a Canon lens?

A few of the most recent Canon telephoto lenses a feature called "Power Focus" or PF. What is the purpose of the setting and does it benefit photography at all? I have found the following lenses ...
4
votes
6answers
2k views

Is small sensor always a bad thing?

I own a DSLR. I want to buy some not-too-expensive compact, and there are a lot of compacts in the range 100-250$ with 1/2.3" sensors. Can such a sensor/camera set give a quality somewhat comparable ...
14
votes
5answers
783 views

What are the different focal lengths of macro lenses and their advantages?

I am interested in macro-photography. I see there are macro telephoto (zoom?) lenses (e.g. 200mm), or smaller macro lenses (e.g. 40mm) ... What are the different types of macro lenses and their ...
0
votes
2answers
806 views

How do you remove the Canon 300mm f/2.8L IS II USM Tripod Collar?

I was wondering if anybody has any knowledge on the tripod collar on the 300mm f/2.8L IS II USM. I have an application where the collar needs to be removed to mount the lens in a rig. With other ...
0
votes
1answer
136 views

Can someone give me an. Example of when you would want to stop down? I do this manually? I just purchased a Canon 3Ti with a Canon 18-200 lens [duplicate]

Can someone give me an. Example of when you would want to stop down? Do I do this manually? I just purchased a Canon 3Ti with a Canon 18-200 IS lens. We will be shooting outdoor sporting events also ...
1
vote
0answers
2k views

Are Canon T2i lenses usable with 5D Mark II cameras? [duplicate]

I presently own a Canon EOS t2i and I am looking to purchase the Canon EOS 5D Mark II. Are all my lenses compatible?
0
votes
0answers
98 views

What are the qualities of a good macro lens? [duplicate]

What are the qualities and technical specifications of a good macro lens? I need a Macro lens (micro for nikon) to shoot insects (for scientific researches) and other small objects. These are the ...
4
votes
3answers
339 views

How do they come up with focal lengths for lenses?

There are a lots of lenses for each camera and I understand that each lens caters to a different use case but my question is on how they arrive at these numbers. For eg: there are prime lenses which ...
3
votes
4answers
428 views

How is it possible to have shallow depth of field with a small aperture? (The tele-macro paradox.)

Some longer tele lenses have a macro mode that allows for really shallow depth of field that have a lot of background melting when using relatively narrow apertures; like f/4.5-6. I have tried and ...
14
votes
11answers
8k views

Will a 50mm f/1.8 work for general outdoor photography?

I want to know if it's advisable to use 50mm lens for general outdoor photography. I'm torn between 35mm and 50mm primes, and have read all the pros and cons. I understand that 50mm could be tight in ...
5
votes
1answer
423 views

Colored powder in a lens: will it need a cleaning?

I was taking photos of people playing Holi. Some of the powdered colour landed on the lens of my Canon Powershot S95, and in the groove of the flash housing. By lens, I mean the cylindrical part that ...
4
votes
2answers
10k views

What type of effects can I obtain with UV, FLD, CPL filters if any?

Can someone give me examples and show the difference. I obtained these from amazon. I have played with them for a little while and I am not impressed/bought yet. UV filter has no affect other than ...
2
votes
1answer
497 views

Nikon Lens Warranty explanation

I want to purchase a good lens of about $1K from Nikon (the 18-300mm lens for example) and I have a few quick questions about the Nikon Lens warranty. I researched online extensively and it seems ...
0
votes
1answer
130 views

Which Canon should I buy? [closed]

I've done photography for some months now. I always borrowed an Canon 600D from a friend. Now I got a job as a party and concert photographer. (I need to use an external flash of course.) I'm just ...
5
votes
3answers
5k views

Would it be better to use a 35mm prime instead of a 50mm prime on a cropped sensor body?

It's said that 50mm is close to what the human eye sees and is a very versatile focal length in general, especially good for street photography which is what I'm most interested in. That being the ...
2
votes
1answer
573 views

If I want soft focus, should I get the Canon 135mm soft focus lens or do it in Photoshop?

I always read that when possible it's best to "get things right in camera" which I always aim for - so following that line of thinking, would it be worthwhile to get the Canon 135mm f/2.8 soft focus ...
7
votes
5answers
966 views

Why not have the diaphragm in camera body instead of the lens?

Why is the diaphragm to control the amount of light entering the camera typically in the lens and not the camera body itself?
2
votes
3answers
2k views

Why does my Nikkor 12-24mm lens vignette on my Nikon D800?

I have a Nikon D800 and am using a Nikon 12-24mm lens with it. When completely zoomed out it produces a vignette that I don't particularly care for. I've never seen this with my other Nikon DSLRs ...
12
votes
6answers
2k views

Do lenses lose sharpness when they age?

I was reading this answer where it mentions, "..it's a lens that can lose sharpness as it ages.." and was wondering if this is true and if yes, true for all lenses. Reasons as to why this happens and ...
5
votes
3answers
635 views

For MTF, why does 10 represent contrast while 30 represent resolution?

I'm trying to learn to read MTF charts. Everything is making sense to me, except why most explanations of MTF will refer to the 10 l/mm line as a measure of contrast while referring to the 30 l/mm ...
0
votes
3answers
4k views

70-200mm lens: Canon or Sigma? f/2.8 or f/4?

I was thinking of buying a Canon EF 70-200m f2.8 mk1 (I would love to buy mk2 but here's a noticable difference in price, at least in my country), but after awhile I came to the conclusion that this ...
32
votes
7answers
2k views

Do good lenses really last a lifetime?

I’ve heard people say “a good lens will last a lifetime” many times. Is this actually true of modern lenses? More specifically, will a good lens be usable for a lifetime? With an inexpensive adapter, ...
0
votes
2answers
1k views

Will a Tamron 70-300mm f/4-5.6 lens fit a Nikon 1 J1 camera?

Will a Tamron 70-300mm f/4-5.6 DI LD Macro (Nikon AF) fit a Nikon 1 J1 camera?