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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)

13
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5answers
2k views

What can cause an “Err 99” on my Canon 20D with EF-S 17-85mm lens, and what can I do to resolve it?

Err 99 Shooting is not possible. Turn the power switch to <OFF> and <ON> again or re-install the battery. Every now and then when shooting with this lens, I'll get this error ...
3
votes
2answers
3k views

Canon EOS 1000D gives Err 01, then phase-detection AF stops working

The other day, I was taking some pictures outside and everything was working fine, but at some point, the display on my camera showed this error: Err 01 Communications between the camera and ...
6
votes
6answers
1k views

Is it important that the Canon 1DX isn't specified to autofocus with lenses slower than f/5.6? [closed]

Seeking the lens market AND the related info WRT Canon 1D X, I found some things which seems concerning: 1st, a note from Canon's Chuck Westerfall (see here) saying: “AF is unavailable on the ...
6
votes
3answers
4k views

Is the Canon EF 70-300mm f/4-5.6 IS USM suitable for wildlife photography?

I got my first DSLR about a week ago (600d) + af-s 18-135mm kit lens, but I want another lens with greater focal length. So I thought about this lens: CANON 70-300mm f/4-5.6 IS USM How does it ...
2
votes
1answer
392 views

Tamron 18-200 lens

I am looking for a budget telephoto lens. The Canon 55-250 and Tamron 18-200 are both within my budget. I am slightly inclined towards getting the 18-200 because of the range it has. I looked up for ...
5
votes
3answers
3k views

Which filters could I use with Sigma 8-16mm f/4.5-5.6?

I am very keen on purchasing the Sigma 8-16mm f/4.5-5.6 DC HSM lens, but one of the draw backs of this lens is that I can't put normal / standard filters on it. Can anyone please advise if I could ...
3
votes
5answers
2k views

Canon 70-200 F4 L USM (non-IS) vs Tamron 70-300 VC

Please help, I am very torn between these 2 lenses in my budget. I am looking for a telephoto lens to use primarily outdoors for photos of my 3 year old, husband playing football and longer focal ...
4
votes
7answers
701 views

Trip to India - choosing which lens to carry

I will be traveling to Jaipur India, and wanted to know which lens to take along with my Nikon d5100. I currently have a 35mm f1.8, 55-200mm, 70-300mm and a 18-70mm. I want to take pictures of the ...
2
votes
5answers
1k views

Tamron 17-50 f2.8 lens vs Canon 17-40mm 4.0 lens

How is the quality of the Tamron 17-50mm f2.8 lens? Specifically, is it comparable to the Canon 17-40mm lens, in the following measurements. Overall quality (Blur, aberrations, etc) Parallel lines ...
13
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3answers
536 views

Distortion/quality when using a full frame lens on a crop sensor camera

I am looking for a sharp, affordable wide-angle prime for my Nikon D7000, primarily for landscape shots. I am really interested in the Samyang (aka Rokinon, Bower) 14mm f/2.8 lens due to its ...
1
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0answers
78 views

What are some good online tools for finding compatible lenses? [duplicate]

Possible Duplicate: A website that can help me in choice of new lens? Where can I find reviews of lenses? What online tools are available to find compatible lenses for a given camera?
3
votes
3answers
707 views

Image Stabilization in Lens vs Body: Which is Cheaper?

Is Image Stabilization better in the lens or the body? Someone already asked that. But I'm trying to make a purchasing decision. It seems that the short answer to my title question is that it's ...
10
votes
6answers
2k views

Which prime lens to get after the 18-55mm & 55-250mm?

I started out with the 18-55mm IS kit lens on my Canon EOS 550D over a year ago, and added the 55-250mm IS a couple of months back to augment my telephoto reach (based on the recommendations in one of ...
5
votes
3answers
871 views

White spots on some photos

I'm fairly new here and fairly new to photography too. So I'm hoping someone can help me out here. You see, there is this white spot that appears in my photos and I don't know what causes it. It ...
3
votes
2answers
966 views

Broken Canon 28 -135 mm lens

I have a 28 - 135 mm Ultrasonic; the mechanism for the auto focus has failed, and there is some plastic bouncing around inside. Is it worth repairing this lens? Second question, assuming I don't get ...
6
votes
4answers
629 views

Are there any pinhole “lenses” available from lens manufacturers?

I know that it is possible to make your own pinhole, but do lens manufacturer's make pinhole "lenses" that include aperture data, etc? If so, who makes them?
13
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2answers
1k views

Retrofocus lens? What's that?

I saw that in Why do some people prefer 50mm to 35mm prime lenses? , in @MattGrum's answer: ... The 50mm is a simpler design compared to the retrofocus 35mm ... What's retrofocus?
6
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2answers
1k views

Any reason to buy stock lens for Sony Alpha if I already have good Minolta Maxxum lenses?

I am a novice photographer looking to get into DSLR photography. I have an old Maxxum 5 and a couple lenses for it: a 75-300 zoom and a 28-80 zoom. After reading this question, it is clear that ...
1
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1answer
290 views

Sigma 17-70mm f/2.8-4 OS HSM over Canon EF-S 18-55mm f/3.5-5.6 IS II

I own the Canon lens (on a 400D camera). Rather satisfied, but it is not an inspiring lens. I refer most of all to image quality. I know Sigma has some more focal length and it is a good thing ...
4
votes
2answers
293 views

Canon 50mm F1.8 quality

I recently bought 50mm f1.8 lens online, and quality is very poor as described in most of the reviews. But when i shake it gently I can feel some of the parts moving inside. And when ever I slide the ...
3
votes
1answer
655 views

How do I get a decent zoom lens for my Micro 4/3 camera?

I recently bought my first “real” camera, an older Lumix GF-1 with a pancake 14mm/2.5 lens. (I love it, here’s some samples.) I wanted to try a zoom lens, so I bought a second-hand 14–42/3.5–5.6. ...
6
votes
1answer
279 views

Can anyone help identifying this lens?

I bought a Nikon FG today, with 2 lenses and a load of accessories. One of the two lenses is kind of a mystery, as there's no manufacturer name on it. I'm trying to figure out who's the manufacturer, ...
0
votes
4answers
566 views

What do I need to take better landscapes and low light sports photos?

I have a Nikon D5000, and Nikon 70-300mm VR Nikon 18-55mm lenses. I am looking to improve my basketball, soccer, football, and baseball photos, and also scenery photos. My pictures in a gym or low ...
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votes
3answers
298 views

What lenses could I get for EOS 60D beyond the kit? [closed]

I have just bought the EOS 60D and I am thinking to buy some new lenses. What are the next best lenses to buy to get more detail in my pictures and do they have to be EF-S lenses (like the kit lens ...
3
votes
2answers
1k views

Nikon 50mm FX as general-purpose lens on DX?

I have a Nikon D5100 with the excellent 35mm 1.8 (DX) prime lens and am now looking at the 50mm 1.4 (FX). This is (according to my research) a 75mm equivalent on a DX body. Does anyone else have ...
6
votes
1answer
533 views

What are the differences between Pentax weather sealings - DA★, WR, AW?

Pentax has in current product line weather-sealed lenses with three different markings - DA★ on primes and fast zooms; WR on consumer zooms and 100mm macro; AW on some newer primes. What are the ...
5
votes
2answers
104 views

Does “the same” lens, with different autofocus systems, have the same optical quality?

I'll give examples with Nikon only, but the question is pretty general. So, is this a fact or not? Examples: Nikkor 50/1.8G AF-S, Nikkor 50/1.8 AF-D and Nikkor 50/1.8 AF 70-300 AF and 70-300 AF-S ...
3
votes
1answer
1k views

lens math: focal length vs distance to subject?

I have found this illustration that shows how the framing of a subject varies at different focal lengths. At first glance, 10mm vs 17mm is quite a big difference. But then again, it seems like the ...
6
votes
3answers
4k views

Why is the 18 - 200 mm lens so expensive compared to equivalent alternatives?

I have been looking at various lenses and I found that that the 18-200 mm lens is pretty expensive (be it Canon or Nikon) when compared to the combination of the lenses 18-55 & 55-200. Is there ...
2
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1answer
1k views

nikon 70-300 f4.5-5.6 vr problem

I got this lens second hand from eBay; it was in perfect condition, but recently when I zoom in to between 135 and 200mm it makes a grinding noise and shakes.
-5
votes
3answers
461 views

Comparison between acquiring the Canon EF-S 17-55mm f/2.8 IS or EF-S 24-70mm f/2.8 lenses

I'm thinking of getting either the Canon EF-S 17-55mm f/2.8 IS or EF-S 24-70mm f/2.8L lens. What are the main similarities and differences between these two lenses, and what are their relative ...
2
votes
2answers
419 views

Why is my lens focusing sound lounder than before?

I'm new to DSLR camera. I didn't mount a lens properly. The camera still allowed me to take photos, so I didn't notice the error. After I had been using it for 10 minutes I noticed my error and ...
4
votes
3answers
830 views

Why are there no autofocus tilt-shift lenses? or, why do tilt-shift movements appear to be incompatible with phase-detection autofocus?

I have never seen or heard of an autofocus tilt-shift (perspective control) lens. It seems like perspective control movements prevent phase-detection autofocus from working correctly; for example ...
1
vote
1answer
317 views

Which of the following lenses do fit on a Nikon D 3100

I've been given the following lenses from my neighbour; which ones will fit a Nikon D3100? Sigma 28-200 mm F F3,8 - 5,6 Nikon Af 70-210mm F/4,0-5,6 Nikon Af 28-85mm F/3,5-4.5 Nikon 50 mm F 1.4 Nikon ...
10
votes
3answers
664 views

Why are 50mm Lenses Cheaper?

There is no doubt that 50mm lenses, if all other variables are held equal, will beat any other lens when it comes to value for price (lower f/number). I want to know why. Possible theories I have ...
6
votes
1answer
188 views

K800i 5.2 mm lens equivalent

I really like the pictures my Sony K800i with its 5.2mm lens takes and I use its lofi quality to creative effect and woud like to know the 35 mm lens equivalent to this little piece of plastic. I ...
3
votes
3answers
612 views

7D or D700 for hockey?

I hate to be THAT GUY that starts another comparison thread, especially one that may really seem like comparing apples and oranges and has probably already been answered somewhere, but all the ...
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votes
3answers
4k views

Are Nikon lens double the cost of Canon auto-focus lens?

Are Nikon lenses double the cost of canon Camera? Point in case, below. I am an amateur photographer and my usual requirements are: Portraits with nice Bokeh Macro (flowers, insects etc.) Day ...
2
votes
0answers
83 views

How Focal Lengths is related to Sensor Size? [duplicate]

Possible Duplicate: What is the difference between focal length and crop factor? I was watching a video review of Tamron 70-300 lens where he mentioned that effective Focal length for a ...
7
votes
4answers
43k views

How do I decide between the Canon 55-250mm or 70-300mm + 50mm?

I just bought a Canon Rebel T2i (EOS550D/Kissx4) with 18-55mm kit-lens and I have an additional $300 USD to spend on a lens. I had decided to buy a Canon EF-S 75-300mm f/4-5.6 (without IS) and a Canon ...
5
votes
2answers
996 views

Focus ring stuck on Canon 17-85mm lens

I have a Canon EF-S 17-85mm f/4-5.6 IS USM lens on which the focus ring is stuck/jammed. Is this something I could easily repair myself? If so, are there any detailed instructions on-line on how to ...
4
votes
1answer
3k views

Nikon 24-70 versus 35-70 Image Quality and Sharpness (only)

I am planning to buy a 24-70 but I saw a second hand 35-70 AF in a store nearby, I did some research and again, I stumbled upon Ken Rockwell's 35-70 review, in which he states: This 35-70mm f/2.8 ...
15
votes
7answers
8k views

Is a UV filter better for lens protection than a protector filter?

I'm usually very good at getting water/finger marks on lens, so I must use something for protection. Is there any downside of using an UV filter instead of a protector filter? Example: Hoya HD ...
3
votes
3answers
711 views

Upgrade from EF-S 15-85 IS

I currently own a Canon 60D, and I am perfectly happy with the camera. It is going to be years until I move to a better (most likely full-frame) body. My main, walk-around lens is the 15-85. I am ...
7
votes
2answers
2k views

Canon 50mm f/1.8 vs Canon 28mm f/1.8 (vs Sigma 30mm f/1.4)

I have the nifty-fifty and I am in love with the kinds of images it can produce, particularly when it comes to portraits. I really enjoy the lens, but I have one problem; it is a little bit too tight ...
4
votes
5answers
947 views

How to protect surface of lens or filter from condensation of moisture

This happens when the temperature is coolest often late at night or early in the morning. Few days ago I did night shots and every 4-5 minutes I had to clean filter from water (mist). Is there any ...
11
votes
8answers
2k views

Can a sharp picture with a kit lens plus post processing rival a “pro” lens?

If I am able to take a relatively sharp picture with a kit lens, and boost the vibrance and or saturation during post processing, will that picture be comparable to ones taken from an expensive ...
1
vote
2answers
576 views

Pentax DA L 55-300mm lens very soft--is it broken?

There seems to be a problem with my DA L 55-300mm lens, with very soft output at or near the telephoto end: Wide-open test shot Pentax K-5 with Pentax DA L 55-300mm @ 300mm. Av, 1/320s f/5.8 ISO ...
1
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1answer
1k views

What are screw drive lenses?

Are lenses known as screw drivers actually available?If so what are their features and why are they called so.Name some of the lens and their manufactures.
4
votes
1answer
1k views

Is the Quality Inconsistent on the Canon 24-70mm f/2.8 L MkI lens?

I'm considering buying a Canon 24-70 L Mk I. There is one thing that scares me a bit, though: reading reviews around the intertubes it appears that a fair number of people had to send their copy back ...