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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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2answers
53 views

What are these streaks on lens and how to remove?

The front of the front element of a lens I have has streaks that are visible only when light is shone through them at some angles. They do not appear to be scratches. The element looks fine in normal ...
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4answers
82 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
89 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
66 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?
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2answers
92 views

What are the pros and cons of using enlarger lenses for general photography?

Enlarger lenses seem to be available for very little cost. What are the pros and cons of using enlarger lenses for general photography?
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0answers
72 views

Noise at Low ISO

Hi I use a Canon 80D with zoom lenses Tokina 11-16 Canon kit lens- 18-135 I usually get noise on people's faces. I capture at Low ISO, even in daylight at times. I can't figure out why. Could ...
6
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2answers
77 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
55 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
76 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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0answers
33 views

I have a canon rebel T6, are there any one on one online courses to learn everything about how to use this specific camera? [closed]

Which includes how to use external flash, diffusers, lights, reflectors, lenses and all features in this camera? Thank you!
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5answers
84 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
145 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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0answers
32 views

What size filter or petal hood for Canon Rebel T6? [duplicate]

I know it sounds like a vacuous question. However, I have not been able to find info on this topic. Sizing of filter and lenses. I bought some filters for my camera and they didn’t fit. Camera sets ...
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2answers
91 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
72 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
170 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
143 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
77 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
111 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 ...
2
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1answer
96 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
votes
4answers
230 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
88 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
101 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, ...
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2answers
88 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 ...
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3answers
123 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
100 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
498 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
23 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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0answers
30 views

AF not working, need help

so a few days ago i dropped my 18-135 cannon lens (yup, bed). I was pretty sure the lens need repair, because it wouldn't AF. MF is working. However I tried using the lens on an another camera and it ...
1
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1answer
56 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
101 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
750 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 ...
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0answers
42 views

My nikon d5300 camera won't take a photo nor will it focus?

I got my camera for Christmas (couple of days ago) and it was running fine! The focus was amazing etc. Then all of a sudden today, it won't focus. When i half shut the shutter, a noise is created (...
2
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1answer
168 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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1answer
127 views

Nikon Equipment Upgrade Recommendation (for wildlife) [closed]

Forgive me if these kinds of questions are not permitted here, I have no local photography experts/shops so am left with very few options... I am currently in the process of upgrading all of my ...
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2answers
67 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
121 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 ...
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0answers
48 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 ...
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0answers
27 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
votes
1answer
67 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
129 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
117 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
votes
1answer
157 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
82 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
votes
1answer
32 views

Lens adapter for Nikkor 40mm f/2.8 AND/OR Nikkor 50mm f/1.4 manual lens that will work on Canon EOS R? [closed]

Is there an adapter that will work for either or both? I am trying to figure out if there is an adapter out there that will fit either one on the Canon EOS R. If not, which lenses are recommended ...
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2answers
93 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
87 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 ...
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2answers
116 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
136 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?
2
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2answers
48 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 ...