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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.

learn more… | top users | synonyms (1)

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2answers
136 views

How to prevent my waterproof camera from condensation?

I recently bought a HP C-150w for my vacations and the first time I've used it in water it got condensation on the lens as soon as I removed it from water. I've been reading about how to prevent ...
14
votes
1answer
1k views

Can anyone identify the manufacturer of this golden lens?

On a recent photo tour, a lens another photographer used caught my attention because of its golden color and no manufacturer name I know being visible. Unfortunately, I was busy taking some shots ...
4
votes
2answers
178 views

Use of DOF adapters in stills photography

The camcorder guys figured out long ago how you can get the shallow DOF of a larger sensor system (typically full frame) on a camcorder equipped with a much smaller sensor (typically 1/2.8") by doing ...
5
votes
6answers
3k views

How do non-MFT lenses work on a Panasonic GF3?

I'm thinking of buying a GF3. But the lenses are pricy, so I have to pick my kit wisely. I saw that there are adapters for it, but I'm new to lenses. Are there any problems with attaching non-MFT ...
10
votes
4answers
22k 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?
0
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0answers
26 views

Sports photography [duplicate]

I own a Nikon D5100. I am 3 steps below a beginner photographer. I bought this camera in hopes of being able to take photos of my family during sporting events; football, wrestling, dance line, ...
0
votes
0answers
63 views

Bayonet mount adapter

I am planning to buy a Vivitar lens with a 58mm bayonet mount. I need to fit it to a 58mm screw fixing. Can I get a adapter to do this? If so, where and what is it called?
5
votes
4answers
2k views

Why are Micro Four Thirds lenses so expensive compared to Canon?

I'm looking at picking up a new prime portrait lens to augment the kit lenses that came with my Olympus OM-D M-10. My brother has a Canon with a 50mm f/1.8 lens that takes beautiful photos and costs ...
0
votes
1answer
221 views

Do I need an adapter to mount a Sigma lens to a Canon Rebel Ti3?

I bought a Sigma 70-300mm DG 4-5.6 Macro Zoom Lens for my Canon Rebel T3. Do I need an adapter of some sort to be able to attach the lens to my camera?
1
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4answers
1k views

Can you remove scratches from a lens with peanut butter?

An article appeared on Apartment Therapy that claimed that a scratched camera lens can be repaired using peanut butter and/or toothpaste. This strikes me as a horrible idea that could make a bad ...
-3
votes
2answers
133 views

Can a shutter booster lens speed up the shortest shutter time on my DSLR?

Is there any shutter speed booster lens available for Nikon 5300. Currently Nikon 5300 supports 1/4000. What if I would like to increase the shutter speed to 1/8000 or more.... Is there any ...
0
votes
1answer
78 views

Problems with my lens

Hi i have had a Nikon 200mm lens for about three years now. I did not use it for about six months and when i used it again it was all fuzzy. I have tried everything. Is it because it is so old? I ...
1
vote
1answer
99 views

Nikkor lens for landscape photography day / night [closed]

I'm currently using a Nikon D5200 with a 18-55mm lens and am wanting to get myself a new lens. I'm looking for a really sharp lens that "was built" to shoot landscapes in both good and bad light. ...
6
votes
5answers
1k views

What about lens construction influences bokeh?

I can understand how certain elements of a lens can correct an aberrations or make it sharper - but specifically, how do lens manufacturers influence the bokeh - the quality of the blur? There's a ...
4
votes
2answers
607 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 ...
20
votes
5answers
5k views

What does a 'nano crystal coat' do on this lens?

The Nikkor 85mm f/1.4G AF-S has a 'Nano Crystal Coat'...what is that and why is it on most of their most expensive lenses? Obviously its a coating and some links seem to indicate it may increase ...
-1
votes
1answer
83 views

Compatible lens for a Nikon 1 J1 camera [closed]

I am looking for a 70-300mm lens for a Nikon 1 J1 camera. I would appreciate any recommendations!
3
votes
4answers
968 views

What lens do I need for a group portrait like this?

I am enrolled in community college, majoring in photography. I currently do head shots but I want to do vintage(ish) portraits of families of say 4-5 people. I have a studio set up with a vintage sofa ...
48
votes
5answers
11k views

What is “angle of view” in photography?

I read on the Lens Buying Guide @ neocamera: Focal-length determines the angle-of-view seen through a lens for a given sensor-size. With a full-frame sensor a lens gives the same angle-of-view ...
4
votes
2answers
572 views

Are there reasons beyond weight and price to choose the Olympus 40-150mm over the 14-150mm?

I'm curious whether there is any advantage in buying the 40-150 vs. the 14-150 lens. Both are f/4.0-5.6 and quality seems to be the same. Is there any reason except weight and price for which one ...
0
votes
1answer
563 views

Are there disadvantages using an FX lens on a DX Camera? [duplicate]

I have a set of FX Lenses for my 35mm SLR, but also a DX Digital SLR. The FX lenses work fine, so I wonder if there is any point buying a DX Lens? The DX camera was body-only, and I'm currently using ...
2
votes
1answer
140 views

Is 85-135mm really the best for every single kind of face?

They say that focal length around 85-135mm is the best for the head and shoulder kind portraits. I've done some tests myself, I can definitely see the differences. The face is more natural looking ...
0
votes
0answers
60 views

Does my lens “mm” define the zoom [duplicate]

I have an SMC Pentax-M 80-200mm F4.5 lens which I bought for moon shots so I wanted something with range to it. I have the standard Pentax Prime 8.5mm lens that I got with my camera but I would like ...
0
votes
0answers
40 views

Should I buy the Nikon 18mm-300mm / 18-200mm or 55mm-200mm / 55-300mm? [duplicate]

This question could be a duplicate but my point is completely different from it. I have just started to use a Nikon D3300 with the 18mm-55mm kit lens. Now, I want to upgrade to the 18mm-300mm but ...
1
vote
3answers
776 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) ...
16
votes
10answers
2k views

Which piece of equipment is holding me back?

I am primarily an amateur photographer but I do take small jobs from time to time. I'm looking to upgrade my equipment but I'm not sure if I should be spending money on my body, glass, or both. I ...
0
votes
2answers
184 views

Is a 3rd party (Tamron) lens safe to use on a Canon EOS 600D?

Is it safe to use a Tamron lens with my Canon EOS 600D DSLR? Will it affect the sensor in any way?
4
votes
5answers
3k 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 ...
2
votes
4answers
328 views

What equipment do I need for astrophotography?

Is it possible to create a picture like the following, using a D7100 camera with a standard 55-105mm lens. If not, what is needed for this kind of photography?
6
votes
5answers
4k views

Weather sealed lens

I'm thinking about buying a Nikon D7000 and I have found out that it's weather sealed (sealed to shoot in rain). So my questions are: Does it really work in heavy rain or is it only for a few water ...
1
vote
2answers
89 views

How to adjust the lens in dark? [duplicate]

I have CANON EOS-600D DSLR. few days before I was on my terrace to capture some sunset scenes. When I was returning It was almost dark but I saw a bat flown to nearby tree and hung itself there. I ...
2
votes
1answer
247 views

Shoes photography [duplicate]

I am in need for a technical solution for a shooting of shoes. I have this reference: Could someone please advise on the fallowing: Do I need a light box like this one? What is the correct ...
1
vote
1answer
133 views

Is it possible to add an aperture ring on Nikon G Lenses?

Many of the more affordable Nikon FX Lenses are G Lenses, without the aperture ring. One of my Cameras is a Nikon FG manual 35mm SLR from the 80s, which could only support a G Lens at the lowest ...
0
votes
1answer
84 views

Which of these lenses will work?

Which of the following lenses will work best for macro with ole m0doel Olympus E-1 camera mentioned here www.keh.com - OLYMPUS 28MM F/3.5 {49} OLYMPUS - 28 F3.5 (49) www.keh.com - OLYMPUS 50MM ...
1
vote
1answer
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
3answers
252 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?
2
votes
4answers
18k views

What should I do when my Nikon AF-S lens won't auto focus?

I have a Nikon 35mm f/1.8G AF-S DX I bought for my Nikon D5100, it's only a couple months old, never been dropped or anything, and it all of a sudden won't auto focus. Anyone know if this is a simple ...
0
votes
2answers
323 views

Is a Canon 50mm 1.4 lens only meant to focus close range?

Ok, so I currently shoot with a canon Rebel which of course has a 1.6x crop factor. My primary lens is Canon's mid-level 50mm f/1.4. I love this lens for close up portraits and can get a very sharp ...
0
votes
1answer
65 views

Why does the angle of view narrow as you zoom in? [duplicate]

Why does a 4mm lens have a wider angle of view than an 8mm lens ?
3
votes
1answer
326 views

Cannot light a fire using a lens? [closed]

A few days ago, on a sunny day, I found myself hiking in the woods and wanting to help fellow picknickers to light a fire with no matches or lighter. However, I had my 17-55 f2.8 Nikon on my camera, ...
28
votes
12answers
8k views

Should I buy a camera with kit lens, or body plus lens separately?

I am planning to buy a DSLR soon. Before I zero in on the model, I want to know whether it is advisable to buy a kit (body + 18-55 lens) or not? OR should I go for the camera-body and the lens ...
3
votes
2answers
1k views

What causes longitudinal chromatic aberration on Nikon 50mm f/1.4D?

I have looked on my new 50mm lens photo (I have Nikon D90) and I see "purple fringing" around the unfocused objects (longitudinal chromatic aberration). What's is going on? Is it common for this lens ...
3
votes
2answers
153 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 ...
11
votes
3answers
9k views

Why prefer the 18-55mm and 55-250mm lenses vs 18-200mm?

There seems to be a preference for to have the 18 mm - 55 mm 55 mm - 250 mm lenses, but no mention of why they're better than a single 18-200mm. Could someone please explain why the two separate ...
31
votes
7answers
14k views

What can a fisheye lens be useful for?

I have a variety of lenses in my camera kit. One that I do not have, and has me curious, is a fisheye lens. I mostly understand what it does: it captures an image with distortion similar to what you ...
27
votes
6answers
2k views

What is the definition of a “prime lens”?

There are many discussions of differences between prime, zoom and macro lenses. I have not heard about prime lenses until recently. Could someone explain what exactly a prime lens is? Is it ...
4
votes
2answers
411 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
128 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. ...
4
votes
2answers
327 views

Will the Rokinon 8mm f3.5 Fisheye work with a Canon camera?

I want to buy the Rokinon 8mm f3.5 Fisheye lens, but I saw in one review that is not recognisable for Canon because there is no a chip which is necessary. What is that exactly? Will I have problems ...
2
votes
2answers
919 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?