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0
votes
1answer
35 views

Sony 3.5-5.6/18-55 SAM (SAL1855) lens broken

I have a Sony 3.5-5.6/18-55 SAM (part no. SAL1855) lens that has taken a knock and the zoom ring is now stuck fast at 55mm and the focus ring doesn't want to pull all the way in. Are there any guides ...
0
votes
1answer
63 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 ?
1
vote
2answers
109 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. ...
2
votes
3answers
181 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?
0
votes
1answer
54 views

Why is the external lens for my smartphone blurry when not at full zoom?

I've just bought an optical zoom lens for my Samsung S4 (I'm a web developer and blogger so I thought that it would be a handy tool for taking photo's when out and about without my main camera). The ...
1
vote
3answers
345 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) ...
6
votes
4answers
930 views

Why is my lens only somewhat sharp near the center and very blurry on the edges?

I bought a canon 50-250mm IS lens (for my T1i), maybe two years ago and haven't used it much, but whenever I do, I always regret using it. Pictures are blurry, the depth of field too shallow and so ...
0
votes
1answer
128 views

What's the practical difference in an image taken at focal length of 200mm vs 300mm? [duplicate]

I'm confused about the 200mm and the 300mm zoom ranges. I am looking for some examples of the same subject, in order to visualize the difference between 200mm and 300mm focal lengths. I want to ...
11
votes
2answers
1k views

Does a greater optical zoom range on a lens mean less image quality?

I have read that big optical zooms of let's say 10X do not produce excellent image quality. Is this true even nowadays, as there have been many technological improvements in this area? For example, ...
1
vote
1answer
97 views

Can a lightweight telephoto zoom lens fulfill my expectations of excellent image quality? [closed]

I am interested in purchasing a Canon, light, in terms of weight, telephoto zoom lens. I would like excellent image quality though. Are my expectations far from real? My future lens is purposed for a ...
11
votes
4answers
768 views

Other than speed and weight, what advantages might a prime lens have over a zoom at the same focal length?

At the same focal length, apart from speed and maybe weight, what other advantages does a prime lens like the 50mm have over a zoom lens like the 24 - 70mm? To put it better, If I set my 24-70mm lens ...
0
votes
2answers
93 views

Is a Sigma AF 28-80 an useful addition to a Nikkor 35-105 macro?

I'm experimenting with photography and I'm on a budget: I'm using a Nikon D70 and I already have a Nikkor AF 35-105 f/3.5-4.5 macro and a 50 mm f/1.8 E (manual focus). Now I found a cheap Sigma AF ...
1
vote
1answer
420 views

Effective zoom of Sony 55-210 lens (e-mount for NEX series camera) [duplicate]

According to Sony's website this lens has a zoom factor of 3.8. I currently have an 18-55 lens that came with my NEX-3F that has a zoom factor of ~3.1. Since the 55-210 pics up where the 18-55 leaves ...
3
votes
4answers
847 views

How do I choose a zoom lens for Canon APS-C?

I know nothing about any of this. From my research, Canon's 70D looks like a good camera body for a retired (31 years) professional photographer (my dad) to "pick the camera back up" in the digital ...
0
votes
2answers
709 views

How does focal length relate to macro magnification? [duplicate]

I'm new to photography and would like to know a little more about zoom lens, The main thing I wonder about is this, I have a Fujifilm S4000 camera that claims to have 30x magnification. The new ...
1
vote
2answers
908 views

Canon Sharp Zoom Lens for Fashion Photography

I am looking to buy a Canon L lens, preferably a zoom to cover various ranges and focal points. I had a look on the new Canon 24-70f4L and it looks fantastically sharp. However, someone mentioned on ...
1
vote
2answers
377 views

How to fix Canon 17-40mm F4L loose zoom ring

I bought a used Canon 17-40mm F4L a while ago, and I just noticed it had the Zoom Ring kind of loose and also a lot of my pictures that were taken at the widest were 19mm instead of 17mm
5
votes
3answers
1k views

Best lens for taking pictures of surfers

I'm just trying to decide which new lens to get. I need to take surf and windsurf photos from onshore. Sometimes 300 mm is enough but there are many times they are too far away. I have a sigma 70-300 ...
1
vote
1answer
202 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
788 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
1answer
136 views

Do elements drift out of place with age in zoom lenses?

I have used a Nikon 18-200 for several years and probably have 30K or so photos taken with the lens. It appears that over time the lens is less consistent in the sharpness of the lens. I have heard ...
2
votes
2answers
388 views

Is trading Canon 18-135mm + 24mm lenses for a 17-40mm L or 70-200mm f/4 L a good decision?

I currently have a Canon 60D with an 18-135 lens and a 24 mm f/2.8 lens I hardly use. I really fancy the 24-105L IS (colour, sharpness, etc) and the 100-400L for the length (Freud would have something ...
1
vote
1answer
358 views

How to fix a zoom lens that is sticky at a particular focal length?

I have the Canon 18-55mm lens. When I zoom out from 55mm to 18mm, the lens works fine until 22mm, where it seems to be stuck and you must then use a bit more force. I saw in many sites that this is ...
8
votes
3answers
6k 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 ...
6
votes
1answer
357 views

When focusing at max zoom, focus is lost after zooming out. Is that normal?

On my Canon kit lens, I could completely zoom in, focus on the object and then zoom out to take the picture with the object still in focus. Now I have a Sigma 18-200mm (with a Canon 600D) and that ...
0
votes
2answers
632 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 ...
4
votes
3answers
416 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 ...
5
votes
3answers
447 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 ...
3
votes
2answers
369 views

Should a Nikon 18-55 lens zoom automatically?

I have purchased a Nikon D5000 camera with 18-55 from eBay. The lens focuses automatically, but should the lens also zoom automatically or is this controlled manually by the zoom ring.
3
votes
4answers
2k views

Canon 24-105 vs 70-200 within the same range

I'm interested about shooting within the ~70-100mm range. I found out on google shop that these two lenses are priced $750[24-105mm, new] and $550 [70-200mm, new], respectively. Which one do you ...
2
votes
2answers
182 views

What is zoom multiplication based on?

When a camera says that it has, for example, a 10x optical zoom, what exactly is that 10x based on? Is it the angle of view of the human eye, the focal length of the camera, or what?
4
votes
1answer
159 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 ...
0
votes
2answers
2k views

What level of zoom lens comes with a new Canon EOS 1100D?

I am a complete newbie to DSLRs. I am planning on buying a Canon EOS 1100D SLR with Kit (EF S18-55 IS II). (It's also known as the Canon Rebel T3.) I have a 10x optical zoom in my Point and Shoot ...
0
votes
2answers
5k views

Best all round zoom lens for D3100?

New to DSLR photography and would like some advice. What would be a good all round lens for the Nikon D3100? I have got the 18-55 one from the kit, any recommendations? Also are there any other items ...
4
votes
1answer
767 views

24mm f2.8 vs 24-85 f3.5-f4.5 (Nikon)

I have a 17-50 f2.8 zoom (Tamron) and while it performs admirably, it is heavy. So I was thinking of a 24mm f2.8 prime, when I also read up on the 24-85 f3.5-4.5 (non-VR) AFS lens. Here's the ...
3
votes
1answer
260 views

What do I need in order to mount my zoom lens onto a tripod?

I just purchased a cheap Opteka zoom lens and it is super long -- over two feet when fully elongated. It has built-in a tripod mount and I have no idea how to use it. I currently own a Vanguard ...
1
vote
1answer
515 views

What is cheapest way to get a 10-20× zoom range on a Nikon D5100? [duplicate]

Possible Duplicate: How do I decide on a camera/lens with high zoom range? There are a lot of relatively cheap ~ 300$ (with body) consumer cameras with mega-zoom features — i.e. lenses with ...
1
vote
2answers
2k views

What are the differences between the Canon EF 70-200mm f/2.8L IS II USM lens and the one that isn't IS II?

On Amazon, the Canon EF 70-200mm f/2.8L IS II USM Telephoto Zoom Lens for Canon SLR Cameras is $2500 whereas the Canon EF 70-200mm f/2.8L USM Telephoto Zoom Lens for Canon SLR Cameras is a mere $1400. ...
5
votes
5answers
4k views

Canon EF-S 15-85mm IS USM or Canon EF-S 18-135mm IS to replace a broken kit lens?

I'm looking to upgrade the 18-55 kit lens I got with my 450D. I finally settled choosing between these two. Which one would you get and why? I do mostly amateur photography on my spare time, trips ...
0
votes
1answer
293 views

How does the Tamron 55-200mm LD macro lens compare to the Canon 55-250mm IS?

I have a Canon 1100d, the standard 18-55mm lens kit, and the 50mm f1.8 lens. I want to buy a zoom lens as I would like to be able to get closer to far away subjects. I have been looking at both the ...
4
votes
3answers
990 views

Are prime lenses sharper than normal or telephoto zoom lenses?

Example: The prime lens Nikon 1.4F G is said to be very sharp at F3.5. So, if I compare that with the normal or telephoto zoom lens's F3.5, will the level of sharpness be same? If no, then will the ...
2
votes
2answers
2k views

How good is Sigma 70-300mm F/4-5.6 DG Macro Lens

Planning to buy this lens for my D-90, but not sure how good it is, though i have narrow down my search based on budget constraint. But i have read that it has given good results for wildlife ...
8
votes
4answers
554 views

What is the technical name for a zoom lens which has a fixed maximum aperture?

What is the technical name for a lens which has the same maximum aperture throughout the entire zoom range?
14
votes
4answers
2k views

Why push/pull zoom is not widespread?

The Canon EF 100-400mm f/4.5-5.6 L IS USM has a push/pull zoom mechanism instead of a zoom ring. Other lenses, like the Nikon 80-200mm f/2.8 AF released in 1988 use this type of zoom too, but the ...
24
votes
3answers
2k views

When you zoom in with a lens on an SLR why does the lens go in then out?

I guess this is more a question of optics than photography but I just got an SLR with a basic 18-55 lens. I noticed that when going from 18 to 55 or 55 to 18 the lens physically comes back in and ...
3
votes
1answer
286 views

Can anyone show me an example of Zoom Creep on Nikkor lenses?

Looking for some pictures which certainly demonstrating this problem on Nikkor lenses. I am about to purchase the lens and want to be able to distinguish.
1
vote
2answers
349 views

Is the used Nikon Nikkor 18-200mm lens I bought broken?

I bought the 18-200mm Nikon lens used through a reputable vendor through the mail. I purchased insurance just in case the lens did not work or was damaged in shipping. I'm not a professional but I ...
3
votes
2answers
2k views

Will a prime lens help me get better portraits at a wedding?

I have a Canon 600D with the EF-S 18-55mm f/3.5-5.6 IS lens. I have a friend's wedding coming soon, and I'm not sure if my zoom lens will do a good job or not. I was thinking of buying a prime lens so ...
7
votes
5answers
2k views

How much different are the Tamron 17-50mm f/2.8 stabilized (VC) and non-stabilized versions?

I have seen these 2 lenses being suggested by many people across the site as general purpose zooms and an upgrade to the typical 18-55mm kit lenses. The price difference seems to be around $200 (~INR ...
3
votes
4answers
3k views

Why am I getting soft images with my Sigma 24-70 f2.8?

I recently purchased a Sigma 24-70mm f2.8 lens which I am using on a Canon 40D body. Around 8 of 10 shots were soft, regardless of subject matter. Exposure, white balance etc. all looks fine. I only ...