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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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2
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4answers
111 views

Should my collection of older Pentax lenses be a deciding factor in my first DSLR purchase?

First post on here so I'll try and put a bit of background. I'm brand new to taking "proper" photographs and want to get started in landscape photography as a hobby after seeing some great pictures ...
0
votes
1answer
226 views

How do the 35mm Zeiss Loxia vs Sony Zeiss Sonnar compare for IQ for landscapes?

How do the Sony Zeiss Sonnar 35mm f/2.8 and Zeiss Loxia 35mm f/2 lenses compare on the Sony a7? (I am interested more with image quality than ergonomics, build quality, price, etc.) I am ...
23
votes
7answers
34k views

Why does fungus form in lenses, and how to get rid of it?

Recently I was using an old Pentax 50mm f/2 that had a quite big green spot, and later I was informed that it was a fungus. A couple of questions raised from this: Why does fungus form inside the ...
0
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0answers
28 views

How to remove oil from aperture blades?

If you go on ebay or other second hand places, you'll see a fair amount of lenses that have oil on the aperture (particularly on older lenses). I've done some reading and it looks like this oil is ...
0
votes
2answers
57 views

Actual Focal Length on APS-C cameras [duplicate]

I'm aware that actual focal length of a lens on APS-C cameras is longer than what is written on the lens. My question is, for lenses that are specially designed for APS-C cameras (like a Nikkor DX ...
1
vote
2answers
87 views

How to accurately calculate size in image using relations and a reference

OK so the relation math is easy enough. If you know the size of an object, say a 12" ruler in the image, and you put the ruler flat against another object like a door. You take a picture of the door ...
5
votes
4answers
6k views

Why are objects far away inverted through a lens but not through the viewfinder?

When I look through a lens the image of objects far away are inverted but when looking the the viewfinder on my camera they are not. Why is this? I am having a hard time understanding why objects far ...
0
votes
1answer
71 views

Can I adapt a Minolta AF-mount Tamron zoom lens for use on a Canon or Nikon DSLR?

I have a Tamron Minolta AF 28-300mm f/3.5-6.3 LD aspherical macro lens, which I would like to use on a Canon EOS 600D or Nikon D5200 DSLR. The lens was used on a film SLR Minolta camera. Is there an ...
1
vote
2answers
2k views

Is Canon 16-35/4 IS better than 16-35/2.8 II at f/4? [on hold]

I have had a 16-35/2.8 II for almost a year, but it broke and I might be in the market to replace it. Last week I saw that Canon had released a new lens in this range, but with f/4 and IS. Is Canon ...
3
votes
2answers
254 views

How to determine if a new lens is a subpar copy?

I have read some posts like the ones below about testing a lens to determine how well it performs optically. What I didn't see was anything on determining whether the lens performs as it should and is ...
1
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2answers
256 views

What should I look for in a wide angle lens?

I'm pretty new to photography .. would appreciate if anyone could advise me a little on comparing wide angle lenses. For example, I'm looking at the Canon EF 24mm f/1.4L II USM and Canon EF 14mm ...
5
votes
5answers
2k views

Why are Micro Four Thirds lenses so expensive compared to Canon?

I'm looking at picking up a new prime portrait lens to augment the kit lenses that came with my Olympus OM-D M-10. My brother has a Canon with a 50mm f/1.8 lens that takes beautiful photos and costs ...
0
votes
1answer
23 views

E-mount lenses to A-mount bodies?

Is there such a way to adapt E-mount lenses to A-mount bodies? If not is there a reason this can not be done? If there is such an adapter can you recommend an adapter to me?
0
votes
2answers
580 views

What Nikon cameras is a Sigma AF-k lens compatible with?

I was recently given a Sigma AF-k lens and told it was Nikon compatible. I am trying to get a better handle of what the AF-k stands for. I have both a Nikon F4s and a D5100 that I use and not ...
0
votes
0answers
38 views

How do I deal with a lens stuck on a Nikon D90?

My wife has a Nikon D90. She can't seem to switch lenses. When we push the release button the lens barely moves. Does lock back in to place though.
26
votes
6answers
5k views

Can I damage the focus system by turning the focus ring when the lens isn't mounted?

I have a couple lenses that don't have an internal focusing system, and whenever I want to put them back in my bag, I turn the focus ring to make the lens shorter. I noticed that when the lens is set ...
0
votes
0answers
37 views

Using motorized lense on a motorized Nikon body [duplicate]

Say I'm using a lens with an AF motor on a Nikon body which also have AF motor. Which one will be active? Is there a way to control it? Thanks
5
votes
4answers
1k views

What insurance options are available for rental lenses?

I am thinking about renting a couple for expensive lenses ($900+) from Adorama. I'll be visiting NYC from Chicago. They state on their rental page. We do not provide Insurance. We strongly ...
0
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0answers
46 views

Has anyone used Canon EF lenses on Sony mirrorless cameras? [duplicate]

I'm looking to buy a Sony mirrorless camera. The draw back is the expense of extra lenses as Sony really is proud of their products. Has anyone here tried using a Canon EF lens on a Sony mirrorless ...
0
votes
0answers
26 views

Nikkor AF 70-300mm “Lens Not Attached” Error [duplicate]

My AF Nikkor 70-300mm lens stopped working with my D40 for no apparent reason. When I attach the lens, it claims there is no lens attached, even though there clearly is one attached, and the ...
0
votes
1answer
408 views

“Lens not attached” appearing whenever I try to use my Nikkor 70-300mm?

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
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1answer
36 views

Nikon D3200 - quality loss with stock lens and with old lenses?

I know that you can use an adapter to mount various old lenses on D3200, but would I lose quality by doing so? I even read something that said that the default VR2 lens delivers 3 times as poor ...
0
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0answers
9 views

Macro/Telescopic converters for Nikon D3200's 18-55mm VR2 lens? [duplicate]

Would I be able to mount the converters to this lens and would they work well and do much good for me? Are they even worth buying assuming I won't be getting any other lens for a while (they're ...
1
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1answer
50 views

Which lenses can use with my Sony A-mount body when using mount-adapters and what are the disadvantages of such adapters?

I own a Sony A77 APS-C SLT A-mount camera. For someone who likes to experiment and is on a budget, mount adapters are tempting, since they greatly expand the catalog of available lenses and open up ...
3
votes
1answer
214 views

Can screw-in wide angle adapters/converters produce decent quality results?

I would like to get wider angle photos than my current setup allows (18mm APS-C minimum), but decent wide angle lenses (10-14mm for Sony) cost 300+€. I stumbled upon these wide angle converters which ...
4
votes
2answers
10k views
12
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1answer
5k views

What is a focus limiter?

What is a focus limiter and how does it work? What is the advantage of it? For instance Tamron 90/2.8 Macro has a focus limiter. According to the documentation: In the limit position, the Tamron ...
2
votes
1answer
72 views

Nikon 18-55 mm Lens Focus Wheel Jammed

I accidentally dropped my Nikon D3200 with a 18-55 mm lens about a foot onto a hard carpet. It originally looked ok, however I soon realised it wasn't focusing. I saw that the focus wheel was jammed ...
25
votes
2answers
5k views

What is a zone plate?

I was looking into alternative methods of photography and I happened upon something called a 'zone plate.' Three questions: What is a zone plate? How does it work? What can I do with it?
1
vote
1answer
140 views

How do I know if a tiny lens crack is a manufacturer fault?

1I bought the Canon zoom STM lens recently, and used it a couple of times indoors and just yesterday took it outside. Then I noticed a little dot , or what it seems like dust (the actual size might be ...
18
votes
4answers
2k views

Can I use old Pentax lenses on newer Pentax DSLRs?

Can I use old Pentax lenses from the film days on the newer Pentax DSLRs? Are there any caveats or exceptions? Are adapters or modifications needed?
1
vote
1answer
180 views

Why does my camera insist that my Nikon 50mm f1.8 be locked at its lowest aperture setting?

I just got this lens and I really love it, but I can't seem to figure out why it will only take pictures at f/1.8. If I attempt to change the lens aperture setting, it says the aperture must be set at ...
130
votes
3answers
50k views

What do all those cryptic number and letter codes in a lens name mean?

Then looking at a lens name there is a lot of acronyms in the name describing it's features (often specific to the manufacturer). Examples, Nikon: Nikon AF-S DX 16-85mm VR f/3.5-5.6G IF-ED Nikon ...
4
votes
2answers
723 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. ...
2
votes
3answers
287 views

Why is my zoom lens blurry at focal range past 100mm?

I recently purchased a used Canon 55-250mm IS lens and it works nicely at 55mm(even with lower shutter speed, and f/4 aperture), but turns out quite blurry at longer focal lengths, even with a shutter ...
0
votes
0answers
44 views

Sigma lens adoptor to Nikon camera [duplicate]

I have a Sigma zoom 28-80mm 1:3.5-56 macro lens. I like to use it on a Nikon D3200 camera. Could anyone tell me which lens adoptor will fit and i need to buy. Thank you.
2
votes
1answer
135 views

Explanation of the fisheye phenomenon

It seems that the fisheye effect can look different with the same lens. So I want to understand how it works. For example, I use a Dji Phantom vision 2 drone to take pictures, all of my pictures have ...
2
votes
1answer
227 views

Nikon 16-85 VR focus noise problem?

My 16-85 VR is doing some weird noise during focus, manual or auto. It's like an hiss. I asked in a local shop and they said it can be some microdust inside the lens. But I'm a little worried it can ...
19
votes
4answers
5k views

What makes a Carl Zeiss lens so special in a smartphone?

There are smartphones on the market that have a focus towards photography. Some are equipped with a Carl Zeiss lens. I have looked into Wikipedia, which tells me that they are a brand who produces ...
0
votes
2answers
158 views

What is the most compact camera/lens setup with movements?

I want to try perspective control and I'm good with using film (large format too) or digital camera (full-frame) to do that. What is the most compact option, which can be used while traveling?
1
vote
1answer
201 views

Is it possible to add an aperture ring on Nikon G Lenses?

Many of the more affordable Nikon FX Lenses are G Lenses, without the aperture ring. One of my Cameras is a Nikon FG manual 35mm SLR from the 80s, which could only support a G Lens at the lowest ...
1
vote
3answers
1k views

noticeable improvment with 70-200 f4 (non is) vs kit lens (18-135 is) and 70-300 (is, non L)?

I currently own a 600d + a 18-135 kit lens.. but one thing i fell missing is reach.. I can't afford an expensive lens like the 2.8 is or the 100-400 so i thought about two lenses: canon ef 70-200L f4 ...
3
votes
1answer
136 views

Too heavy a lens? [duplicate]

Silly question. I have a Nikon D5100, that unfortunately just needed to go in for service. I am trying to make sure I don't do whatever I did again. I just got a new 500mm lens, it is quite heavy. Is ...
3
votes
5answers
11k views

If I have an 85mm lens for portraits, is a 50mm useful as well?

I recently got my Canon EF 85mm f1.8, after lot of thought over if I should buy Canon EF 85mm f1.8 or Canon EF 50mm f1.4, I decided on 85mm so that I can shoot portraits of people even from a ...
6
votes
3answers
933 views

What are the metal items on top of an older Nikon lens?

Does anybody knows what the two metal items on top of the lens are used for?
1
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2answers
278 views

What type of lens is more suitable for this type of portrait shot on railroad tracks?

Posted on FaceBook looking for volunteers to model for me for free and I give them the photos for free and some people agreed to that so I want to be prepared and at least take the right gear to the ...
1
vote
0answers
59 views

How to disassemble a lens assembly?

I recently picked up an Olympus OMZ 50mm f1.8 pretty cheaply of ebay. The front element has a slight mould on the rear side although so far I've not seen this affect the image quality. Disassembling ...
4
votes
1answer
371 views

How can I fix a Nikon DX 18-135mm with an aperture stuck open?

I am currently on a trip and I brought an 18-135mm lens and a 35mm prime as my two lenses for the trip. When I took my zoom out of my backpack off the plane and put it on my camera, I immediately ...
2
votes
2answers
135 views

Nikon D3000 70-300 Nikon lens - How to get lens converter off the lens?

I put a Vivitar tele converter on my 70-300 lens. It went on easy but wont come off. How do I get the thing to come off my lens? I have a Nikon D3000 camera.
1
vote
2answers
117 views

Is a 70-300 lens something you would get in addition to a 85 mm lens?

My budget range: Don't want to spend more than $1000.00 My goal: Taking nice portrait shots with bokeh and blurry backgrounds in non-studio places like standing next to a graffiti wall in a street. ...