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Questions tagged [lens]

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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3answers
169 views

Can I get a manual focus lens for my Canon PowerShot camera?

I have recently bought myself a camera, a Canon PowerShot SX530, and I noticed that the focus on this camera is difficult to adjust and clarify. I am looking to buy a low priced manual focus lens, I ...
1
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1answer
109 views

What is this peripheral haziness on a lens element? What can be done about it?

The rear element of a lens has some peripheral haziness on the front surface (inaccessible when the lens is fully assembled). Based on lens diagrams, I believe it is between the two rear-most elements,...
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3answers
167 views

What are these streaks on lens element? How to remove?

The front of the front element of a lens (Tamron SP 35-210/3.5-4.2 BBAR MC, made 1983-1987) has streaks that are visible only when light is shone through them at some angles. They do not appear to be ...
2
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4answers
99 views

how to tell what cameras a particular lens will fit

I have a 10x High Def. 2 element macro lens, which was purchased for an older Kodak EasyShare Z612 camera. Since it now appears that the camera may be broken beyond repair, I need to know if there is ...
2
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1answer
125 views

How does dust get in a lens?

I recently saw someone offering an Nikon 70-200mm VR II lens for a good price second hand. The only drawback mentioned was that it has a little dust behind the front element. How could this dust ...
2
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3answers
80 views

What causes these white rings in images taken with Contax T2? Is there a fix?

What are these white rings that have been showing up on my film? How do I prevent them from showing up in images? How can I remove them from existing images?
4
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3answers
156 views

What differences can be expected when using enlarging lenses for general or macro photography?

Enlarging lenses seem to be available for very little cost. What differences can be expected when using enlarger lenses for general or macro photography? When might one prefer to use an enlarging ...
6
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3answers
104 views

What should I consider when buying a camera and lens to take photos of surfaces for 3D textures?

I would really appreciate if you could help me find the best camera or camera's to take photos of textures. These will mainly include cabinets, countertops, tiles, backsplashes, hardwood flooring and ...
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2answers
62 views

Does adding a lens with a higher MTF50 in front of a lens with a lower MTF50 increase the MTF50 of the entire system?

I know that the MTF of an entire imaging system can be modeled by multiplying the MTF of each component (possibly because multiplication in spatial frequency domain is convolution in space?) So, let'...
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3answers
97 views

Should I remove UV filters from lenses for product photography? [duplicate]

I am starting to do product photography but I dont know whether I should keep the uv filter on my lens or not.
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5answers
108 views

Why Nikon announced S-Line lenses with narrow apertures first?

Some time ago I saw the Nikon's roadmap for new S-Line lenses and today I found an update to this roadmap. I am wondering why Nikon is building lenses with those apertures first, is it a market ...
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2answers
188 views

What would a 10-300 f/1.4 lens (such as for a spacecraft) look like?

My basic question is, what would a fast lens with a huge zoom range look like? This question has been asked and answered for photographers on the ground - the answer was basically (rightfully) "no ...
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2answers
93 views

What lense and flash should I get to take pictures of kids?

I'm new to having a camera and I'm not sure how everything works with my DSLR. I have a T6, and I would like to take pictures with flash without the kids squinting and that it is fast when I shoot. I ...
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3answers
102 views

Thoughts on using Sigma 18-250mm F3.5-6.3 DC MACRO OS HSM for Macro photography

Is the Sigma 18-250mm F3.5-6.3 DC MACRO OS HSM a good lens to be used for Macro photography? I mostly try to photograph flowers and also insects sometimes. I will be using it with a Canon EOS 800D and ...
2
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2answers
250 views

Nikon Lens makes buzzing / humming noise when VR is on - is this normal?

I was given a Nikon AF-S VR Micro-NIKKOR 105mm f/2.8G IF-ED lens as a Christmas gift. It takes great pictures, but one thing I noticed immediately is that it makes a buzzing or humming noise when ...
2
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3answers
149 views

What are the technical reasons to design lenses with oddly shaped apertures?

Some lenses have oddly shaped apertures, like star or shuriken shaped. It seems to be intentional since making "normal" rounded or polygonal apertures is fairly simple (as I have observed while ...
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1answer
94 views

How is a lens's listed minimum focus distance affected by zoom?

I have a 55-210 zoom lens, and the specs show that the minimum focus distance is 1m. Does that distance remain constant if I use the zoom? Or does that change it? Thanks in advance!
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2answers
123 views

Which Nikon mount adapter to get for micro four thirds?

I just bought a MFT Panasonic Lumix GH3, and I have no lens for it. I found that I can put an adapter in order to use my Nikon lens. On the adapter it says: Nikon(G) to micro for thirds. I'm a little ...
3
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1answer
122 views

What are the differences between projector, enlarger, and macro lenses for photographing 35mm slides?

I have some 35mm slides that I would like to digitalize. I am thinking about building something like this (modifying a slide projector to feed the slides and mounting a dslr to photograph the slide ...
3
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4answers
236 views

Which lens should I purchase?

New to photography and have found myself wrapped up in it, what an exciting and fun art form! I have a Canon Rebel T6 (1300D) that came with the standard kit lens as well as a 75-300 lens that came as ...
2
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2answers
94 views

What would happen if a lens had translucent aperture blades?

Apodization filters seem to be used to improve bokeh. They also seem to be able to improve sharpness and increase depth of field. But they also reduce light transmission. While thinking about how an ...
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2answers
128 views

How to avoid perspective distortion when taking selfies?

I'm looking for an affordable way to avoid perspective distortion when taking selfies. I know the best way to avoid this would be taking a portrait with a DSLR with a 200mm-ish lens from 8 ft away, ...
1
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2answers
233 views

How to tighten loose focusing ring on Canon lens?

I'm not sure if it's my particular copy of the lens, but I find the focusing ring of the Canon 24mm TS-E Mark II a bit too loose. It's too easy, in other words, to change the focus by mistake. I ...
2
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3answers
156 views

Can lens defects, such as scratches or fungus, improve image quality?

There are cases where significant damage to lenses, such as major front-element scratches, have been shown to imperceptibly affect image quality. This has led me to wonder: Are there any known cases ...
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4answers
199 views

What is the relationship between lens diameter and exposure?

All of the online calculators for exposure, I have seen, factor in time, film speed, and aperture (which is a function of the iris diameter and the focal length of the lens). However I would have ...
9
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2answers
538 views

What does “AUTO-ZOOM” mean on my Zuiko lens?

"Auto-zoom" is written on my Zuiko 35~70mm lens, is this a name of some lens technology?
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0answers
25 views

Aperture control flex ribbon replacement in Canon EF-S 55-250mm f/4-5.6 IS II [duplicate]

Building upon this great answer to: Canon EF-S 55-250mm f/4-5.6 IS II causes Err 01 only when zoomed beyond 135mm I'm pretty sure that the ribbon controlling aperture inside my Canon EF-S 55-250mm ...
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1answer
123 views

How much silica gel should I put in my dry box?

How much grams of silica gel should I put for my 4.6L air tight dry box? I have a silica gel inside of a plastic sachet but I cut the plastic and put it in a small open container to absorb moisture ...
2
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2answers
109 views

Will a faster lens help getting a better (faster/more accurate) focus? [duplicate]

I read that with some cameras (but which?), using an f/2.8 lens or faster enables a more sensitive phase AF point, so there is quantum jump in AF accuracy. But that's not really my question :) My ...
14
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3answers
773 views

Is it worth upgrading one stop for wildlife photography?

I have just purchased the following lens to accompany my Nikon D500: AF-S NIKKOR 70-200mm f/4G ED VR - £1,349 (see here) However, having purchased this lens a few hours ago, it has been pointed out ...
2
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1answer
188 views

Zoom or Prime Lens(es) for Wildlife Photography on Limited Budget (Nikon D500)

I am currently looking into purchasing some new lenses to accompany my shiny new Nikon D500 on a safari trip in a month. In the past, I have used a Sigma 150-500mm (purchased in 2009 - see here) with ...
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2answers
82 views

What is this long thin mark on my lens, fungus or dust?

What is this long thin mark on my lens, fungus or dust?
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1answer
126 views

Why won't my dSLR take photos with my Sigma 24-70 lens?

I have been using a Canon 60D for five years and recently, only when I am using my Sigma 24-70mm lens, it does not let me take pictures. When I look into the viewfinder, it is so dark (I assume that ...
1
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1answer
63 views

How to identify the original manufacturer of lenses branded JCPenney?

There are JCPenney branded lenses for which I wish to identify the manufacturer. How can I do so? It appears to have been common for redistributors to have encoded the manufacturer in the serial or ...
1
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1answer
70 views

How to identify the original manufacturer of lenses branded Focal (Kmart)?

There are Focal-branded lenses for which I wish to identify the manufacturer. I have read that Focal is the Kmart house brand for optical equipment (cameras, lenses, binoculars, etc). They also ...
2
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1answer
88 views

How to identify the original manufacturer of lenses branded Sears?

There are Sears-branded lenses for which I wish to identify the manufacturer. I have read that Sears encoded the manufacturer in the serial number, so in principle, I just need to find a list of ...
0
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4answers
136 views

What lens should a new photographer consider starting with? (prime vs zoom, focal length, etc)

It seems like the generally recommended practice is to start with a prime and build some skill with something like a 35 or 50mm lens first before moving on. If I'm primarily going to photograph my ...
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2answers
194 views

Fungus or dust?

yesterday I noticed this spot on my zuiko 12-40mm lens, besides other dust particles (I hope it's dust). It's a bit visible after f8. I shot with f22. I checked the lens last week and it didn't had ...
4
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1answer
195 views

How to identify the original manufacturer of lenses branded Vivitar?

There are Vivitar-branded lenses for which I wish to identify the manufacturer. I have read that Vivitar encoded the manufacturer in the serial number, so in principle, I just need to find a list of ...
0
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2answers
100 views

Do I need a Zoom, Macro, or Telephoto lens for birds and sports? [duplicate]

What lens should I purchase to take pictures of fast moving subjects at a distance, magnify them with crisp detail so to speak freeze them in action, and bring them close (as subjects for my drawings ...
0
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2answers
98 views

What does it mean speed of lens in analogue photography? [duplicate]

When reading some reviews on lenses in cons or pros are noted speed of lens. What does it means when we are talking about analogue cameras without autofocus?
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3answers
89 views

What would happen if the location of a filter on a lens were changed?

Most lenses have filter threads in front of the front element. However, some lenses have filter threads behind the rear element, such as some fisheye lenses b/c the front element protrudes too far ...
0
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2answers
326 views

Field of view using 50mm APS-C lens on APS-C body vs 50mm FF lens on FF body? [duplicate]

I am taking 2 pictures using: Nikon D3400 APS-C sensor and an APS-C kit lens, 18-55mm set at 50mm Nikon D850 full frame camera and a full frame lens 50mm that is designed for full frame Nikon ...
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2answers
183 views

Why is my Tamron 24-70 F2.8 G2 clicking when used in Live View mode?

My Tamron 24-70 F2.8 G2, used with Nikon D750, is making clicking sounds when I change the aperture in live view mode on M or A setting. Is the clicking normal?
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2answers
50 views

Relative performance of single lens on different format sensors

I'm evaluating a sigma lens that comes in several mounts including aps-c and micro four-thirds. My question is about the performance on the smaller micro four-thirds sensor. Couldn't I expect the ...
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2answers
737 views

What's the difference between a FL-D filter and an ND filter?

What's the difference between a FL-D filter and an ND filter? I see that FL-D is to improve light, but so is ND. What exactly is the difference?
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0answers
45 views

What are the underlying causes of artifacts seen with anamorphic lenses?

When a camera with an anamorphic lens shows some artifacts, they are usually either an oval bokeh (vertical) or a lens-flare steak (horizontal). How much of these artifacts are due to the "anamorphic ...
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3answers
169 views

Canon EF-S 10-18mm IS STM on a Canon 1300D

I am planning to buy the Canon EF-S 10-18mm IS STM for my Canon EOS 1300D as a better alternative to snap panorama / outdoor architecture photos. From what I've read this lens appears to be ...
2
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0answers
38 views

Converting vintage lense to digital camera [duplicate]

I have a Canon Rebel EOS Rebel sl1 100D camera. I have an older Sigma APO 170-500 lense. Can this be used on the digital camera with an adapter and which adapter? I have looked everywhere and frankly ...
0
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1answer
83 views

Lens recommendation for tiger photography

I am planning to take a photography tour in India to photograph tiger and other animals. What lens would be recommended for such purpose? I am canon user and have 5d mk iv with 100-400 IS I. I have ...