glasses

Glasses                                             
by Meysam                

Submit your Photo
Hall of Fame


Please participate in Meta
and help us grow.

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)

3
votes
1answer
321 views

What adapter do I need to mount a Konica lens on an Olympus E-520?

I bought a Konica Super Albinar MC auto zoom 1:4.5 F=80-200 mm no. 911485 55 lens for my E-520 Olympus camera. The adapter I already have does not fit and I desperately need to know what kind of ...
4
votes
2answers
2k views

Why f/22 is the highest possible setting for the aperture diaphragm?

My first DSLR camera was Canon EOS 350D. Now I've got an upgrade to Nikon D90. Both were/are with the kit lens. Whenever I'm taking a picture with biggest zoom (55mm on Canon, 105mm on Nikon) the ...
0
votes
2answers
761 views

How do I choose a telephoto zoom lens? [closed]

I have a Canon 1100D kit (18-55mm IS II) and a 50mm f1.8 lens. Now I'm looking for a zoom lens. What do you think about the following: Tamron 18-200mm f3.5-6.3 Tamron 70-300mm f4-f5.6 DI LD Tamron ...
34
votes
4answers
24k views

What does the number of elements and groups in a lens mean?

All lens specifications include a statement of how many elements the lens contains, and in how many groups, for example: Nikon AF-S VR Zoom-NIKKOR 70-300 mm 1:4,5-5,6G: 17 elements in 12 groups (two ...
4
votes
7answers
597 views

Are there recent entry-level/prosumer DSLR cameras that can use/are compatible with high quality older manual lenses?

A reason to use older lenses is to save money on bigger zoom or other normally expensive auto-focus lenses. Is this still something people do?
0
votes
1answer
455 views

What does the “L” in the L-Series Canon lenses stand for? [duplicate]

Possible Duplicate: What is the difference between Canon “L” lenses and non-L lenses? Any ideas? Just curious. Some seem to think it stands for Luxury.
-1
votes
1answer
2k views

What does the F number in a lens name mean? [duplicate]

Possible Duplicate: What does the f-stop printed on the lens refer to? I understand that for a DSLR you can modify the aperture(the F number) to allow more or less light to enter the ...
0
votes
2answers
8k views

What do the lens parameter abbreviations mean? [duplicate]

Possible Duplicate: What do all those cryptic number and letter codes in a lens name mean? Canon EF 50mm f/1.8 II What does EF, II mean? Sigma 10mm/F2.8 EX DC Fisheye HSM compatibil ...
6
votes
5answers
916 views

Which one wide-medium lens to buy as the main lens for an outdoor wedding?

I have my first solo wedding gig coming up and I'd love recommendations for almost any lens (under $1500, preferably) to go on my 7D. My Sigma wide-angle is basically no longer usable. I have some ...
32
votes
8answers
5k views

Do I really need a fast 50mm lens?

Everyone I speak to says that a 50mm lens is the best and beats them all as an all-rounder. I was wondering whether to get myself a decent, fast 50mm as well. However I'm still not 100% sure whether I ...
5
votes
3answers
5k views

Why aren't there Tokina lens profiles in Lightroom, and how do I get one for mine?

I have a Nikon D90 and a Tokina 11-16mm. I want a lens profile for Adobe Lightroom, and it seems they have all known brands out of the box but Tokina. Why is that? How can I add a profile for my ...
5
votes
3answers
2k views

Do Nikon AF-S lenses perform better than AF lenses?

I am going to be getting a Nikon D7000 soon. I think I'm correct in assuming that the Nikon D7000 will use its own focus motor for an AF lens, but allow the lens to use its motor for an AF-S lens. ...
2
votes
1answer
611 views

How much difference is there between the Pentax DA 55-300 and FA 80-320?

I currently have a Pentax FA 80-320, and it's very nice to have a long zoom available. Lately, I've been considering "updating" to the DA 55-300. I also have the DA 50-200, so the lower end of the ...
5
votes
6answers
5k views

Between Nikon 18-55mm II and 50mm f/1.8, which suits my needs better?

I am an absolute beginner in serious photography. I'm a position to get a Nikon D70 body for $100 or so. I've been researching lenses and I'm debating if I should get the one that originally came ...
6
votes
4answers
13k views

Best portrait lens for canon 7d that gives beautiful bokeh?

I tried using the 70-200mm but I couldn't stand how heavy it was and how far away I had to be from the model! Opinions? I was thinking between 85mm 1.2 or 50mm 1.2 ....or another lens? Any help ...
3
votes
3answers
770 views

Which would be more suitable lens in terms of utility, weight, price: 18-135 or 18-55 + 55-200?

Is it better to invest in one 18-135mm lens or have a standard 18-55mm lens and another 55-250mm lens for occasional need?
-1
votes
2answers
677 views

How do I decide the best aperture to use with my Canon 18-200mm lens and 50D?

I am using a Canon 50D with the 18-200mm lens it came with. Some of my pictures turn out un-sharp, even taking metering and Auto Focus points into consideration. I wonder if this is caused by my ...
10
votes
3answers
5k views

How do I know if a lens is genuine?

I'm in Times Square shooting the Imagine Cup event, and several people said that to fix my shot, I would need a faster lens. Just for the hell of it, I went across the street to a photo shop to see if ...
16
votes
2answers
3k views

Why do zoom lenses and compact cameras have varied maximum aperture across the zoom range?

Why does a camera's maximum (allowed) aperture get smaller when you increase its zoom?
2
votes
3answers
225 views

Where should one go in terms of equipment for event shooting after a D7000 kit?

I'm still new at photography -- really, it is going to be a long while before I can get close to the potential out of the D7000 kit. However, Microsoft recently has been giving me the opportunity to ...
5
votes
4answers
4k views

How do Canon EF 100mm f/2.8 and EF-S 60mm f/2.8 macro lenses compare?

I've read over a few of the macro posts on this site, and I'm very new to digital photography, so I have a few questions, and some may be overlapping. I have a Canon EOS Rebel T3, and I want to buy a ...
3
votes
3answers
1k views

How do I choose a zoom lens for my Canon DSLR when I'm ready to move beyond the kit lens?

I am using Canon 500D with the kit lens (18-55). I think I have done enough with 18-55 and want to try out next lens. I have already decided to purchase 50mm prime. I also wanted to get a Zoom lens. ...
5
votes
4answers
3k views

Best all-around ~$600 standard zoom lens for Canon? [closed]

I have a Rebel T2i, I was wondering what standard zoom lens is the best around $600. I'm mainly shooting landscapes / cities / peoples. I've done some research and came up with 17-50, 18-55 from ...
1
vote
1answer
870 views

Olympus T2 Adapter ring stuck on my Sony Alpha — how can I get it unstuck?

Edited. I bought a Samyang 500mm Mirror lens off ebay so that i could try and expirement with tele photos before i decided to buy really expensive lenses.. I got the lens with a T2 Adapter (Olympus) ...
4
votes
2answers
1k 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 ...
44
votes
7answers
188k views

How do I convert lens focal length (mm) to x-times optical zoom?

What is the rule to convert the 'mm' notation to the 'optical zoom' notation? I searched a bit and found this one: optical zoom = maximum focal length / minimum focal length For example a 18-55mm ...
5
votes
2answers
1k views

What's the base f-stop when counting an ideal f-stop for lens?

I've read a lot around this site that an ideal quality of the lens is achieved when using f-stop roughly 2 stops slower than the fastest value of the lens. Firstly, I'm not exactly sure what "2 ...
0
votes
6answers
307 views

Help me with information to take a lens purchase decision

After quite a time I have made my mind to buy a DSLR and I am thinking for Canon 550D. Though question is long I could not find way to shorten this. As a starter I would like to stick and learn with ...
12
votes
5answers
5k views

What is a portrait lens?

I hear this term used pretty often. Does it refer to a specific focal length? Or very low F-number? What does a lens need to have in order to be considered "portrait lens"?
22
votes
12answers
35k views

How do I get a stuck screw filter off of my lens?

There is a UV-filter screwed on my Canon 16-35mm. For some reason, I'm not able to get it off the lens. Does anyone has a simple but safe trick?
24
votes
4answers
4k views

What is a “fast” lens?

I've been reading lots of camera reviews lately and have ran across several references to "fast" lenses. What exactly is a fast lens and what are its advantages compared to other lenses?
4
votes
2answers
3k views

If I have a 28mm f/1.8 lens (on a crop body), do I still need the 50mm f/1.4?

I have the Canon 60D and a Canon 400D (my original camera). I have two lenses a Sigma 50mm 1.4 HSM and a Canon 28mm 1.8 USM. Both lenses are incredible performers. I've noticed the bokeh I receive on ...
9
votes
1answer
651 views

Does the image stabilizer on Canon lenses decrease the overall image quality?

When I'm shooting hand-held during the day, when the light is strong enough for the camera to shoot at 1/2000 and slower (therefore the image stabilizer should be useless, right?), should I disable ...
16
votes
10answers
36k views

Which prime lens for Pentax APS-C?

My girlfriend is buying a Pentax K-5 (I already have a Pentax DSLR so we thought it made sense for us to be able to share lenses), and she's not sure about which lens to get with it, so I've been ...
1
vote
2answers
851 views

Can I configure the D7000 to perform lens distortion corrections on the embedded JPEG in the RAWs it saves?

Lightroom eats the distortion present in the D7000's kit lens for lunch. However, it's time consuming to check which photos I like by performing this correction on all the photos in lightroom first. ...
7
votes
3answers
1k views

Is pincushion or barrel distortion really all that bad in a lens?

Given that software can pretty trivially fix pincushion and barrel distortion patterns if you're shooting in RAW (Lightroom did the right thing just by knowing what lens I used with the given EXIF ...
1
vote
6answers
5k views

What is a good lower-cost alternative for the Nikon 85mm f/1.4 lens?

I have a Nikon D7000. The 85mm f/1.4 looks pretty awesome, but I don't have the money for it. What's a good alternative that won't break my bank? I'm open to other brands. I have the 85mm f/3.5 ...
5
votes
4answers
1k views

Why is the front element of a telephoto lens larger than a wide angle lens?

A wide angle lens has a wide angle of view, therefore it would make sense that the front of the lens would also be wide. A telephoto lens has a narrow angle of view, so it would make sense that the ...
4
votes
2answers
2k views

AF-D vs AF-G: is the aperture ring necessary?

I just purchased a Nikon D7000 with an 18-105 f/3.5-5.6 AF-S lens. I'm also looking at purchasing a lens around the 200-300mm focal length range, and I found the 70-300mm f/4-5.6 AF lens. As far as I ...
0
votes
1answer
207 views

Can the camera be considered to the Human eye? [closed]

So mirrors make you look so big, and some mirrors don't. And they only thing that actually tells you your volume of you body, is the human eye! So, If i took a picture Would it show me, what other ...
18
votes
4answers
3k views

How does a lens affect the saturation of a picture?

In many reviews people describe how a lens can affect the saturation of a picture, especially when it comes down to a comparison of two similar lenses, e.g. 50mm 1.8 vs. 50mm 1.4 or something like ...
9
votes
2answers
563 views

Are there any depreciation schedules for canon lenses?

I am looking to purchase some used "L" series lenses for my Canon 60D. I am not exactly sure at which point it's no longer feasible to purchase a used lens over new. Surely even the best lenses must ...
4
votes
3answers
864 views

What type of lens should I get for an air show?

I went to an air show yesterday, I took a few nice pictures of the Red arrows which is great, but they look so far away, even smaller than by eye. I've got a Nikon D3000 with the kit lens. What type ...
5
votes
3answers
1k views

Portrait lens for Canon T1i [duplicate]

Possible Duplicate: What is a good Canon lens to take portraits? I have a Canon Rebel T1i camera. I am thinking of buying a Canon EF 50mm f/1.8 II lens for portraits. Is it the right lens ...
7
votes
4answers
2k views

What's the best lens for taking pictures of cakes?

What is the best lens to take pictures of cakes? My camera is a Nikon D300s.
9
votes
4answers
1k views

Why buy an intentionally soft lens?

While reading some reviews of older lenses, I keep reading "It's soft wide open, but that's not always a problem with portraits." Over my rather short time in photography thus far, I've come to ...
15
votes
9answers
3k views

Are all kit lenses poor? (And if so, why?)

Kerri Shotts says (emphasis mine): Also, if you already have great glass, there is little reason to get more (unless you need it for a certain reason). E.g., if you have a 70-200 f/4, don't rush ...
12
votes
10answers
2k views

What lenses to bring while traveling? One good wide-telephoto or several smaller ones?

I have a Canon 7D and often take my camera on the road while traveling. In the past I've taken my Sigma 17-70 f/2.8-4 and my Canon 70-300 f/4-5.6, which means that I must switch out lenses quite a ...
8
votes
2answers
2k views

Is it normal for there to be tiny dust particles in a new lens?

I'm the owner of a new Canon 550D with a Canon 18-135mm IS lens. While looking into the lens, I noticed what I think are two tiny dust particles (I would say smaller than 1mm) behind the first glass ...
2
votes
6answers
922 views

Is the IS of the Canon EF 100-400 4.5-5.6 L IS USM Telephoto Zoom worth the extra £200 over the Canon EF 400 f/5.6 L USM Lens? [duplicate]

Possible Duplicate: What size lens is recommended for flying bird photography? I am having trouble deciding which lens I should buy my wife to go with her new Canon 7D. She uses it mainly ...