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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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1answer
228 views

FEE error NIKON D90 50mm f/1.8 [duplicate]

My nikon D90 is showing FEE error on all settings and is not clicking pictures at the moment. Nikon support says the answer lies in page 26 of the User's manual but i didn't find anything helpful. ...
3
votes
2answers
138 views

Are the Panasonic Leica DG Summilux 25mm/F1.4 ASPH models H-X025 and the H-X025E the same lens?

I just ordered a lens from a website that said H-X025E, but the box that has arrived says H-X025. Are they the same, or have I been delivered an older model? After looking around, most reviews just ...
3
votes
5answers
2k views

Seriously considering upgrading my Rebel T2i (550D) to either a 6D, 7D or 70D

I shoot a lot of performers in low lighting conditions. Essentially I am looking for a camera that will help me reduce the noise level significantly. I find myself rarely using the kit lenses and ...
1
vote
1answer
135 views

How does amount of blur compare between differently-sized sensors using lenses with equivalent focal length?

Let's say we compare two bundles: 1) cropped DSLR with crop factor 1.6 and 50 mm fix lens set on f/1.4 aperture 2) full-frame DSLR and 50 * 1.6 = 80 mm (which is not far from 85 mm) fix lens on ...
1
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1answer
124 views

How to protect lens from fungus [duplicate]

How can I have total protection of a lens from fungus?
0
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2answers
748 views

Canon 70-200 f2.8 non IS or f4 IS [duplicate]

I've been reading 70-200 f4 is vs 2.8 non is for days and still I don't know what to do. Ok..at the moment I do not do weddings. I do portraits (babies on up), I do photo shoots of a kid or kids ...
2
votes
1answer
228 views

How do anamorphic lenses produce lens flare “streaks”?

For example: What contributes to this streaking? Why doesn't spherical lenses have this effect? How is it used in photography?
0
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2answers
369 views

Do I need 50mm lens If I have 24-105 lens for canon 6d? [duplicate]

Do I need 50mm lens If I have ef 24-105mm f/4l is usm lens for canon 6d? What should be my next lens? I mostly interested in landscapes.
2
votes
3answers
126 views

Will lack of image stabilization be a problem if I'm using a tripod?

I have been looking in to the Sigma 70-300mm F4-5.6 APO DG Macro for both its macro and telephoto capability, and noticed it does not have an optical image stabilizer. I'm still new to photography ...
0
votes
5answers
696 views

is the Nikon 35mm f/1.8 worth it after i have the kit lenses? [duplicate]

I have a Nikon DX (D5100) camera with the two most basic kit lenses: 18-55mm f/3.5-5.6 VR and 55-200mm f/4-5.6 VR. These two lenses cover lots of scenarios, but I'm starting to believe there is more ...
1
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1answer
152 views

What's the difference between a diopter and an extension tube?

It seems both allow close up shots of a subject but what are the differences both physically and in use cases?
0
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1answer
178 views

“Lens not attached” appearing whenever I try to use my nikkor 70-300mm on my nikon d5000!

I've had my Nikon D5000 for about two years now. It has never failed me! I have only two lenses, the standard 18-55mm lens and a 70-300mm lens I received about two years ago. I've never had a problem ...
0
votes
3answers
112 views

Looking for a 300mm FX lens, with integrated autofocus motor, for under $200 - possible?

I'm starting out with photography and currently have a D3100 with the 18-55mm kit lens. I want to get an entry level telephoto, but my research has led me to conclude that if I stick with this I'll ...
0
votes
3answers
456 views

How do I take baby shower pictures in a low light situation?

I was invited to my friend baby shower last week to take some pictures for them. Most of the picture came out dark and noise. Of course I used my SB-600 flashlight but it wouldn't help that much. Is ...
12
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6answers
666 views

What lens characteristics contribute to attractive lens flare?

Some lenses give really harsh and unwanted flares. Some gives beautiful flares that add depth to an image. What's the science behind this?
0
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3answers
160 views

Lenses with UD Element

I have heard of lenses with UD elements. My question is what are UD elements and what benefit do they give? Can a lens have more than one UD element?
3
votes
2answers
329 views

Canon lenses sweetspots chart

The question says it all. I am looking for a chart or a table that displays the sweetspots for various Canon lenses. Is there anything available online?
1
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2answers
136 views

Minimum and maximum apertures

Is there such a thing as a maximum aperture that a lens can be open to? What about a minimum aperture that it can be closed to? Do these concepts even make any sense? Is there a lens with the ...
0
votes
1answer
159 views

Canon lens FD 50mm 1:1.4 with Canon Rebel T3i - no focus

I am trying to use an old FD 50mm lens with my Rebel T3i camera but cant get focus. Is there any configuration on the camera I havo to make or it just don't work at all? Thanks!
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1answer
72 views

Lenses for the Cannon camera [closed]

Is there a lens you can buy for the cannon that you won't have to switch back and forth between different lenses?
1
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3answers
627 views

DSLR Lens For Close Range Full Body Shots

I have a Nikon D800 and a 70-120mm zoom lens and a 105mm macro lens. I am doing portrait photography and I want to be able to take photos at close range (just a few feet away) while still capturing ...
1
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3answers
169 views

How to review a lens?

My friends asked me about specific criteria when reviewing a lens, I've check ones from available online review sites, and they have different views and review basis. What are the things that one ...
2
votes
3answers
225 views

How many filters can you stack?

The rental store only has 16X (4-stop) ND Filters, and I'd ideally like to get at least 8-10 stops of filtration. How many filters can I stack on top of one another before the image starts to ...
1
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2answers
292 views

What effect does lens separation have on images?

Suppose I have a lens with few elements cemented together. If one of those groups begins to separate over time, what effect could it have on images taken with the lens?
10
votes
1answer
336 views

What is a “De-clicked” aperture control ring?

The Samyang 85mm T1.5 Cine Lens featured a "De-clicked" aperture control ring. What exactly is it?
3
votes
2answers
212 views

Wide Angle Lens on a Step Down ring?

I'm a beginner at photography and own a Canon 20D with two lens; a 50mm prime and a 17mm-85mm zoom. I've purchases all my filters at 67mm to fit my zoom lens and use a 52mm - 67mm step up ring to use ...
2
votes
2answers
215 views

Is there any practical way to measure the T-stop of a lens?

T-stop measures actual light transmission in a lens. Therefore, different f/2.8 lenses can have different T-stops. T-stops are usually only given for cine lenses. For photography lenses, is there any ...
2
votes
5answers
377 views

Wrong screwdriver broke Canon 70-200mm small screw. Any way of unscrewing it?

As shown above, I cannot unscrew anymore the screw of a Canon 70-200mm... : What tool, technique, could help me get it out ? (before I start drilling into it...) Where can I buy brand new screws ...
7
votes
1answer
547 views

What is exactly the '3D pop' in a photography?

When reading about lenses, sometimes I come along the term '3D pop' and I think I have a rough idea about what it means; but I'd love to have a precise or scientific explanation (optics) of it. ...
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votes
2answers
268 views

Which Lens is better to use for portrait photography? [duplicate]

Currently am using Canon EOS 600D with 18-55 mm lens. I am concentrating on portrait photography . i need some suggestions for the lens that i can use for it.
1
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2answers
132 views

Advice for other than kit lens [closed]

I bought my first DSLR [D5100] 4 months ago with the kit lens. It was cool though but now want to buy a lens. I've focused on AF-S NIKKOR 50mm f/1.8G AF-S DX VR Zoom-NIKKOR 55-200mm f/4-5.6G IF-ED ...
2
votes
1answer
113 views

Is this VR malfunction? — viewfinder image becomes unstable again after a few seconds

I got a factory refurbished Nikon 70-300 mm VR lens a few days ago. At 300 mm the effect of vibration reduction (VR) is clearly visible in the viewfinder. The image becomes stable a second or so ...
2
votes
1answer
194 views

Can defished fisheye images have a larger FOV than rectilinear wide angle lenses?

I am trying to create a DIY wide angle webcam with the goal of maximizing my horizontal and vertical fov. I'm thinking that I need to use fisheye filters and then defish the video afterwards. Is this ...
2
votes
3answers
206 views

Can I repair minor abrasions on my Canon 14mm F2.8 USM front lens element?

My Canon 14mm 2.8 front lens, after a few years of use, has slight marks of abrasion. Very slight bruises. Is is technically possible to recoat this lens to render its original finish? (I discovered ...
1
vote
1answer
163 views

Nikon AF 70-300 mm lens zoom broken, can it be salvaged?

So I accidentally dropped my Nikkor AF 70-300 mm lens on the floor (yes, stupid). Now the zoom ring does not work. When I turn it, nothing happens. However, I can slide the lens back and forth, and ...
8
votes
4answers
747 views

Is it the same if you take a picture by setting 50mm in a 18-55mm lens and by using a 50mm prime lens?

Is it the same if you take a picture setting 50mm with a 18-55mm lens and a 50mm f/1.8 prime lens? Assuming that ISO, aperture, and shutter speed are the same, will both the lens give same results? I ...
4
votes
4answers
681 views

Which aperture is the sharpest in the lens that come with Nikon d3100?

Wich aperture is the sharpest in the lens that come with Nikon d3100? I'm new to photograpy and I read about the "sharpest aperture" property that lenses have, but I read it changes depending on the ...
-1
votes
2answers
175 views

Which two lenses would be best for my bag; one telephoto (300mm+) and a portrait/landscape lens? [closed]

I need help on deciding on two good quality lenses. I currently use a Canon 600d body and I would like a lens that will also fit a 5D as I intend to upgrade in the future. Firstly I would like a ...
2
votes
2answers
1k views

How to calculate the FOV in degrees from focal length or distance?

How does one to calculate the field of view (or angle of view) in degrees from the following details: sensor size (for example, 1") distance to target (for example, 7 feet) focal length (for ...
11
votes
2answers
363 views

What are the use cases of a Petzval lens?

I am interested to know when would one use these lenses and what are they best suited for?
3
votes
0answers
56 views

My lens is capable of f-stops higher than the label [duplicate]

I searched on here and I read everything on this page: http://www.geometer.org/beginner/lenses.html But I still don't understand what's going on with my lenses and how they are labeled. I have a ...
3
votes
3answers
278 views

Nikon PC-E Lens .. would it work for me?

I am interested in experimenting with a Nikon PC-E lens (by renting NOT buying!) and I can pair it with an F100, D3100 or D70 body. According to Ken Rockwell's page Nikon 24mm PC-E Compatibility the ...
4
votes
2answers
430 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 ...
5
votes
4answers
419 views

What are some options for a low-cost, general purpose, travel lens for Canon?

I'm going to be traveling the world for the next few years, and I'd like to buy a new lens for my (ancient) Canon Digital Rebel XT. I'm currently using the Canon "nifty fifty" prime lens, but the ...
8
votes
5answers
314 views

More detail close up at 50mm than further back with at 85mm?

In terms of quality of picture and overall detail of subject (e.g. the face of a child), would it be better to stand closer to shoot at 50mm or stand back at 85mm (assuming the quality of the lens was ...
1
vote
1answer
326 views

What are some of the implications of using a medium-format lens on a DSLR?

Medium format lenses can be used on DSLRs via tilt/shift-adapters (Mirex, Zoerk, etc.). A medium format lens with a focal length of, for example, 80mm, has as equivalent focal length on small format ...
10
votes
2answers
288 views

Why does a reverse lens act like a macro lens?

When reverse mounting a lens, it can be used to shoot macro photography, even though the only thing that has changed is the mounting direction. Why does this occur? An 'add-on' to the question that ...
5
votes
1answer
445 views

Why do Canon lenses stay wide open when off camera, but Nikkor lenses keep tight aperture?

I have only noticed this for a handful of lenses so I am probably wrong in saying that all Nikon and all Canon lenses follow suit. But from those I have seen, Nikon tend to close the iris when removed ...
2
votes
3answers
240 views

Are polarizing filters as useful on normal lenses as they are on wide-angle lenses?

I have seen people using Polarizing filters on many wide angle lenses. Is it worth using a Polarizing Filter on a 40mm 2.8f STM Pancake lens or any other prime lens?
2
votes
1answer
118 views

Canon 40mm STM - The focus cannot be adjusted in manual mode

I bought a new Canon 40mm STM lens and in the Lens Manual it says The focus cannot be adjusted in manual mode. Does it mean that its harmful to rotate the focus ring when the focusing mode is ...