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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
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3answers
881 views

Have I broken my Canon 28-135mm lens after DIY repair?

Last week I removed the front element from my Canon 28 - 135mm lens to remove a grain of sand from the lens. It was easy to remove the 4 screws, take of the top layer of glass and remove the grain. I ...
27
votes
3answers
2k views

What does a hexagonal sun tell us about the camera lens/sensor?

In this picture, we see that the sun comes out as a hexagon. I am sure it is not arbitrary. What does the hexagon tell us about the instrument that captured the image?
5
votes
3answers
915 views

For fast daytime shooting of external buildings and indoor art, should I choose 24-70 mm or 70-200 mm?

If I'm on a daytime cycling/walking tour (i.e. little time to compose or change lenses) of external buildings and inside churches (no flash and no tripod), which lens is best to capture non-blurry ...
0
votes
1answer
727 views

Relationship between camera sensor size and lens focal length [duplicate]

I am choosing a camera and lens. I want to buy a Canon EOS 650D, as this camera seems to be a good point of entry into the world of SLR. My question is in the following: The EOS 650D has a cropped ...
2
votes
1answer
125 views

Is there a popular/canonical lens system out today?

I'm entering the world of film photography by buying a cheap Pentax K1000 and a cheap K-Mount lens. Initial research says that the K-Mounts are still in use today, but I'd like to know your opinions ...
3
votes
1answer
129 views

How can I work out how far away I need to be from the set to get it all in frame?

I am planning on shooting a bedroom from above. I am planning on getting a high ceiling studio if I can, and I want the bedroom I build to be the same aspect ratio as the camera lens (so, 16:9?). But ...
0
votes
2answers
910 views

How does the Tamron AF 28-75mm f2.8 compare to Canon EF-S 15-85mm f/3.5-5.6 IS USM?

I am looking to buy a good walk around lens for t3i to finally upgrade from my kit lens. My current preference is Canon 15-85. however I am wondering if I should get Tamron AF 28-75mm f2.8. I am ...
-2
votes
1answer
181 views

Must-have lenses for DSLM/MILC camera?

I am new to the more profession photography. Things that could be easily done with my old compact camera (Sony F717) are more complicated now. For instance: take close-ups at only 2-3cm distance while ...
0
votes
1answer
508 views

Nikon lens naming [duplicate]

Possible Duplicate: What does all those parts in a lens name mean? I'm thinking about buying myself a new lens for my Nikon and I have a question about the naming conventions Nikon uses for ...
3
votes
2answers
712 views

Can I use macro extension tubes with a non-manual lens?

I am new to macro extension tubes and I want to buy one but I don't have a manual lens (one where I could change the aperture manually) so I don't know if an extension tube would work with my lenses ...
5
votes
6answers
1k views

Reducing my gear list after moving from Canon APS-C to FF

I am going to order the new Canon 6D and therefore, I'll finally be transitioned into the world of FF very soon after using crop since the 400D and 50D. Here's my gear list at the moment that I'm ...
2
votes
2answers
1k views

How to clean contacts on my canon 1100d DSLR?

I keep getting an error message on my canon 1100d, when taking photos on my 70-300mm tamron lens when the lens is on 300m it wont take the shot, it keeps showing an error message about the contacts ...
1
vote
2answers
441 views

What does it mean for a telecentric lens to be focused to infinity?

I have a question about a telecentric lens Ive been studying (for physics research!) and was wondering if you guys could help clear some cobwebs in my head. For starters, I am simplifying the TC lens ...
6
votes
3answers
586 views

Filming in a steam room?

I plan to film in a steam room this weekend for a cover shoot. However, I know for a fact there may be difficulties regarding the "steam." Any tips for filming in a steam room?
4
votes
3answers
531 views

Are modern telephoto zooms so improved that they're not a big tradeoff vs primes? [duplicate]

I am looking for a good amateur telephoto lens for Nikon DSLR. It's main purpose will be sport shots. Back when I learned photography with film SLR, a fixed focal lens was significantly better than a ...
3
votes
1answer
381 views

Can I attach a Kiron Lens to my Canon Rebel T1i?

I have a Rebel T1i, and was given a Kiron 80-200mm f/4.5 macro. I'm wondering if there is a way I can use them together - and if so, where I may be able to find an adapter? Should I even waste my ...
2
votes
5answers
1k views

What the best telephoto zoom lens for everyday use with a Canon 7d with a $2500 budget?

I tend to shoot outdoors / landscapes / nature significantly more than I do portraits. I was looking at the Tamron (i think) 50-500 - because it seems so damn fun. But that's the kind of upward ...
1
vote
4answers
11k views

Should I buy a Canon 55-250mm lens or 70-300mm for my Rebel T3i? [closed]

Should I buy a Canon 55-250mm lens or 70-300mm for my Rebel T3i? I have the basic 18-55mm lens that came with my camera but I need a next step up that's not too expensive. What are the most common ...
1
vote
4answers
189 views

Photography: the technical side [duplicate]

I love photography. To be honest, I've never seriously taken even one photo, but I love it. Looking at other people's work on sites like 500px and other discussions on this site, it really makes me ...
6
votes
3answers
10k views

What does “the telephoto end” and “the wide angle end” of a zoom lens mean?

In the Canon Rebel T3i Manual, page 59, it's mentioned that "If you have a zoom lens, use the telephoto end to fill the frame with the subject from the waist up." Same note on page 61 and another one ...
13
votes
4answers
789 views

Does Canon make an L series lens with a plastic lens mount?

An online retailer is telling me that Canon 24-105 f4L lens comes in two versions, the USA model with a steel lens mount and an import with a plastic lens mount. Is this true?
0
votes
2answers
89 views

Will a Nikkor AF-S 70-300mm f/4.5-5.6 G IF-ED VR lens work on my Sony A900?

I have a Sony A900 that I want to use with Nikkor AF-S 70-300mm f/4.5-5.6 G IF-ED VR. Does this lens come with a Sony mount? I do not want to have to use an adapter.
-1
votes
2answers
205 views

Suggestions for Lens for my D5100 [duplicate]

I got the Nikon D5100 recently. I'm happy with the 18-55mm lens, but now am moving out to a different country on short trips and occasionally love to experiment with shots at landscapes and nature. ...
25
votes
4answers
4k views

How do you find out the “sweet spot” of a lens?

I've tried googling this, but have never found a satisfactory answer. I've heard the term "sweet spot" thrown around by some photographers to mean the f-stop of a lens which results in the highest ...
5
votes
2answers
836 views

What are the differences between dslr lenses and video/film lenses?

I've heard several times that one of the reasons videographers are so interested in DSLR video is access to the wide range and low cost of dslr lenses. It would seem to me that they would be very ...
0
votes
1answer
88 views

Which lens should I buy? [duplicate]

I have Canon 550D and 18-55mm IS II kit lens. I shoot landscape, macro and wildlife photography. My budget is $200 and looking for some zoom lens options. I have searched a lot and found following ...
2
votes
3answers
3k views

Lens with small scratches on the front element - how do they affect IQ?

I am looking to buy a CANON 28mm 1.8 EF lens. I found an offer, significantly discounted, of a lens with small scratches on the front element. The offer is very tempting. Here is a photo posted by ...
1
vote
2answers
6k views

Canon 75-300mm f4-5.6 USM or 55-250mm f4-5.6 IS lens?

I am getting a deal on a Canon T3 cam with 18-55mm kit lens and I have choice of one extra lens: 75-300mm f4-5.6 and 55-250mm f4-5.6. I generally like to shoot street, abstract and nature photos and ...
-3
votes
3answers
562 views

Which lens is better: Canon 70-300mm 4-5.6 or 50-200mm? [closed]

For use on a Canon 600D, primarily for travel, landscapes, macro and subjects in motion. An additional consideration: if I go with the 50-200mm I could also afford a 50mm lens.
18
votes
4answers
1k views

What does the dot on some zoom lens scales mean?

I noticed on my Canon 18-55mm kit lens there is a dot on the zoom scale between 24 & 35mm (though skewed very much towards 24mm). This position appears to be the spot where the lens is physically ...
9
votes
4answers
525 views

Why are some zoom lenses “soft” at either end of the focal length range?

As one reads about zoom lenses, a relatively common comment that comes up in reviews of some lenses (especially lower-priced lenses) is that the lens is not as sharp ("soft") at one or both ends of ...
12
votes
6answers
2k views

Is a VR lens worth getting?

I'm thinking of getting a new lens for my Nikon D200. The question is whether or not to get one with VR (Vibration Reduction). I'm looking for something for taking motor sport and wild life ...
10
votes
8answers
3k views

For greater telephoto range, should I use 70-200mm + teleconverter or a longer zoom lens?

Right now, I have a Nikon 18-200mm f/3.5-f/5.6 VR lens. I like it, but want more telephoto range and would also like to be able to use faster shutter speeds. I am interested in the 70-200mm f/2.8, but ...
4
votes
1answer
295 views

Can a bad lens contact cause false battery warnings?

I had a major problem with my Nikon D80 lately, in that after taking 1-2 pictures or just leaving it on for around half a minute, it would give me a battery warning before turning itself off. This ...
0
votes
1answer
1k views

What DLSR should I buy? [duplicate]

I am pretty much a beginner in photography. But I want to buy new a camera and lenses, so I need your help. Is it better to spend more money for the body or for lenses?. Whic DSLR camera is good for ...
0
votes
1answer
642 views

My camera lens won't stay attached

My camera fell while on the tripod and the lens fell off completely while the camera body remained on the tripod so when I reattached the lens it wouldn't stay it works and everything but I just have ...
4
votes
1answer
209 views

Is it normal for the zoom to be loose on a Sony 18-250 lens?

I have the Sony 18-250mm lens. The lens is so loose that it doesn't keep a focal length, but slides down to the fullest extension with minimal downward slope. Is this standard or should I see a ...
2
votes
1answer
357 views

Is there a difference between the black and silver Nikon 50mm f/1.8 E series lenses?

The Nikon 50mm f/1.8 E-series has 2 versions: black (1979-1981) and silver (1981-1985) Is there any difference between these 2 versions, apart from the color?
5
votes
4answers
1k views

Why does the cheap kit lens seem to be sharper than the expensive L wide-angle?

So recently, I was just browsing through Canon's product lists and found the 17-40 f/4 L to be quite interesting, although I will not buy it anytime in the near future. Still, I decided to make some ...
17
votes
12answers
7k views

What is the best Canon lens (around $500) for taking pictures of my newborn?

I have a Canon T2i, a 50mm f/1.8 and the kit lens (18-55mm). I'm considering buying a new lens for more flexibility with taking pictures of my upcoming newborn. I LOVE the 50mm/1.8 lens, but on the ...
2
votes
1answer
78 views

Tamron 70 - 300mm not operating in A-Dep mode

This lens will not operate in A-Dep (Auto depth of field) mode on my Canon 40D. I recently bought this lens second hand. It works very well in all other modes. Is this the start of a terminal problem? ...
7
votes
7answers
1k views

How come there are no 24-70mm f/2.8 lenses with image stabilization?

There definitely aren't any Canon or Nikon lenses. I also have not seen any third party lenses. I can think of two reasons for this: There is some technical limitation (which I tend to doubt since ...
7
votes
5answers
1k 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?
2
votes
3answers
531 views

Are there specific use-cases in mind that make the 70-200 F2.8 worth its weight/size?

I've been looking to upgrade my Mark iii's kit lens, and am comparing lens strategies. The 70-200mm canon F2.8 seems like an enduring and very popular lens. After holding one, i am left wondering why? ...
0
votes
1answer
236 views

Nikon Lens format for D5100 [duplicate]

I'm planning to buy the Nikon D5100. As I'll also buy a 200mm lens which format to go for ? And what does they mean and their differences [DX Format FX Format CX Format]
11
votes
4answers
298 views

Does it make sense to get a non-macro and a macro of similar focal lengths?

I recently asked a question on which prime lens to get after the kit lenses, and in my shortlist of lenses there was quite a lot of overlap of focal lengths along with macro & non-macro versions ...
15
votes
6answers
5k views

How does background blur (bokeh) relate to sensor size?

This is a somewhat theoretical question. Suppose I first take a photo of a subject using a full frame sensor DSLR, with a given lens (say 50mm prime lens at f/3.5). Now suppose I exchange the camera ...
2
votes
4answers
786 views

Which of these lenses allows a greater amount of light through at f/1.4: Canon 35mm f/1.4 or Sigma 35mm f/1.4?

I'm looking for a wide aperture wide angle lens to use with my 5D III body. I'm planning to use this lens for reportage shots in low light conditions. After doing some research, I'm trying to decide ...
5
votes
3answers
607 views

What differentiates a Canon standard zoom from an ultra-wide angle zoom?

I was checking the Canon website and found that the EF-S 15-85mm f/3.5-5.6 IS USM lens is a "standard" zoom lens, whereas the EF 17-40mm f/4L USM is described as an "ultra-wide" Zoom. Is there ...
1
vote
3answers
2k views

50mm lens=75mm on DX camera? [duplicate]

I'm looking for a 50mm lens for my nikon d3100 and I just came across an AF-S 50mm f/1.8G lens and it says in the description that if it's used on a DX camera, the angle of view is going to be 75mm. I ...