The Stack Overflow podcast is back! Listen to an interview with our new CEO.

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.

Filter by
Sorted by
Tagged with
0
votes
1answer
24 views

How different in quality is the Tamron 28-75 Di III compared to the 28-75 Di LD SP AF?

The "III" version, natively available in E mount and released in 2018, is almost twice the price of the older version available in various DSLR mounts. Has anyone here had the opportunity to compare ...
0
votes
0answers
19 views

How to determine diffraction limited MTF at a given contrast?

Tables and formulas to determine the "extinction"/"zero contrast" MTF in lp/mm at a given aperture, for a diffraction limited system, are well known. How to determine the theoretical maximum MTF, at ...
0
votes
2answers
151 views

What digital camera should I buy in order to use a Nikon Zoom-Nikkor 35-105mm f/:3.5-4.5 lens?

I have a Nikon Zoom-Nikkor 35-105MM 1:3.5-4.5 Lens f=35 and I'd like to know: which digital camera is compatible with this zoom? thank you lots, Giorgia
1
vote
1answer
72 views

What options do I have for very compact or pancake lenses for full frame Sony E cameras?

I love tiny lenses, but I haven't found anything that is smaller than the Samyang 35mm 2.8 that also covers full frame for Sony's E-Mount. Is there any option I have that could make an a7r2 jacket ...
2
votes
1answer
61 views

Back-focusing with Canon 7D2 body and Sigma 50mm art lens: is the Sigma USB dock the solution?

I just bought a second hand Sigma lens (50mm Art f/1.4) for my Canon 7D2 body (Mark II). This combination yields a very serious back-focus problem: With no micro-ajustements correction on my body, ...
0
votes
0answers
20 views

Auto focus on the tamron 70-200 mm f2.8 stopped working. Manual works [duplicate]

Recently received my lense from Australia Tamron 70-200mm f2.8 vc G2 two days suddenly the auto focus starts to act weirdly. Moving from 0- infinity continously. Please help, it will be costly to ...
0
votes
3answers
75 views

What techniques do higher-end lenses use to reduce astigmatism at high apertures?

I own a few lenses with a maximum aperture of f/2.8. For this question, I'll focus on two specifically: A Rokinon 14mm f/2.8, which retails around the $500 CAD mark; and A Sigma 24-70 f/2.8, which ...
2
votes
2answers
77 views

Is diffraction limited aperture independent of lens?

I have always understood diffraction limited aperture as a property of the camera and its sensor, not of the lens. The camera has a certain sensor size and a certain megapixel count, which together ...
0
votes
1answer
45 views

I have a Nikon D60 and two lenses: 70-300 and 18-135. Should I get a 50mm 1.8 prime? [on hold]

I have a Nikon D60 and two lenses: a Tamron 70-300 mm f/4-5.6, and a Nikon 18-135 mm f/3.5-5.6. I got all of these things really cheap, and now I want to buy a prime lens. I was thinking about a 50 ...
0
votes
0answers
36 views

Does increasing my aperature/f stop increase my sharpness of increases my data retention of a picture? [duplicate]

So I have a 50m f/1.8 STM lens on a on a speedbooster which drops my f stop to 1.2. And I've noticed that dropping my f stop to 1.2 even though getting more exposure costs me a good amount of detail. ...
0
votes
0answers
50 views

Why are many telephotos lenses white? [duplicate]

I have noticed that many telephoto lenses, especially the full frame ones from Canon, are white. For example, 70-200 lenses are white (but for some reason 200mm f/2.8 prime is black), 100-400 lenses ...
0
votes
2answers
95 views

Nikon 24-85mm (non VR) vs. Nikon 28-70mm 3.5-4.5D

I currently own a Nikon 28-70mm 3.5-4.5D. I've enjoyed the lens and found it on eBay for $45 so it was a steal. From what I understand it was a great compact lens in the 90's that was a "kit" lens but ...
1
vote
2answers
84 views

Is IS/OSS necessary when filming with a gimbal? [closed]

I'm currently changing my EOS 7D for a Sony a6400 and since this camera does not have IBIS, I'm also getting a 3 axis Gimbal (ZHUIYN WEEBILL LAB). I'm planning to use this camera for video and photo ...
2
votes
2answers
114 views

Do mount adapters change the apparent focal lengths of lenses?

I have a Sony A6500 APS-C camera using a Sony 55-210mm lens. I wanted more reach so I rented a Sigma 18-300mm lens for Canon to use with a Sigma MC11 adapter. While testing this setup, I get the ...
0
votes
3answers
116 views

Tamron 100-400 (Canon EF) sharpness

I'm puzzled by how the results that "The Digital Picture" have received while testing the new Tamron 100-400 telephoto zoom lens contrast the positive reviews by the actual users all over the Internet....
0
votes
1answer
56 views

Which lenses should be considered when upgrading from the Tamron 70-300mm Di LD Macro for < £600? (Canon) [closed]

I'm looking to upgrade to a better telephoto lens which can be mounted onto a Canon (APS-C & FF). I currently have a cheap Tamron 70-300mm Di LD Macro, which for the price, I was pleasantly ...
2
votes
4answers
920 views

Which lens has the same capability of lens mounted in Nikon P1000?

I am a beginner in photography and I have a Nikon D3400. I was impressed with the super zoom of Nikon P1000. But, I came into a conclusion to buy a tele lens rather than going for P1000. P1000 has a ...
0
votes
5answers
135 views

Best Canon lens for max depth of field at 70mm?

Recently I photographed some eyewear with my "Canon 24-70 2.8 L" at 70mm (70 mm decision is for a matter of correct ratio between filling the format with subject and it's perspective rendering the ...
1
vote
1answer
53 views

Kodak Retina IIS filter thread

I've inherited a Retina IIS, which is the fixed-lens variant of the more common IIIS. I've not been able to find a manual for it, although the IIIS's manual is fine for almost everything. What that ...
11
votes
3answers
4k views

Why are Fuji lenses more expensive than others?

I notice Canon lenses start at $125 for the 50mm f/1.8, and the $125-$400 range is filled with many options from wide angle to telephoto, not even counting third party brands. Whereas the cheapest ...
0
votes
1answer
58 views

How do I capture northern lights? [duplicate]

I have a Nikon d3400 with kit lens 18-55 mm af-p DX. What is the right camera settings for northern lights photography?
1
vote
1answer
72 views

How to get close to 180 degrees with minimal fisheye look on iPhone X or 11?

I'm trying to film my rugby practices with my iPhone and wondering what is the best lens to use to capture the entire field without much that fish eye look? I noticed that the new iPhone 11 (Pro) ...
0
votes
0answers
29 views

will my lenses for my Canon Rebel XTi work on a new Canon EOS Rebel T7i [duplicate]

I want to upgrade from my old Canon EOS Rebel XTI to a Canon EOS Rebel T7i. Will my existing lenses work on the T7i?
1
vote
1answer
158 views

What does Canon digital lens optimizer (DLO) do exactly?

Recent Canon cameras (example: EOS RP) have a function called Digital Lens Optimizer (DLO). The Canon Digital Photo Professional (DPP) software also has the same DLO feature. Apparently, DLO is ...
1
vote
1answer
49 views

How to mount a Vivitar series 1 lens to a Nikon D5300?

What lens adapter would I use to attach a Vivitar Series 1 lens to a Nikon D5300?
0
votes
1answer
33 views

AF and manual not working

I have Tamron 24-70 with a focussing ring which simply spins without engaging the lens and needless to say doesn't work through the camera either. Any ideas?
0
votes
3answers
104 views

What lenses do I need for all around travel and wildlife photography? [closed]

I ordered a Canon 90D camera, body only. I am looking for suggestions on the best walk around lens for traveling. I like to take landscape and wildlife pictures. I assume I would need two lenses for ...
12
votes
9answers
7k views

What's the biggest difference between these two photos of large animals?

The first photo (Gorilla) is one I took, whereas the second photo was taken by a more serious (not sure if professional) photographer. The second photo is clearly better but I'm not sure what the ...
3
votes
4answers
91 views

Does max aperture affect photo quality even when shooting with smaller one?

I notice that my faster lenses seem to make better photos even when shooting at f8 or higher. Or is it just because of the quality of the glass (faster lenses are usually more expensive) or am I just ...
0
votes
1answer
66 views

Small Canon New FD lenses - correct way to adjust infinity focus?

Intent was: readjust the end of focus ring travel on a new FD 28mm f2.8 so it goes a few mm over infinity, as makes senses for use with various adapters. Plan of action was: Find the adjustable stop ...
2
votes
1answer
38 views

How to create a photo/art project of one type of object in many sizes?

I have many sizes of one item, let’s say for example sea shells of one type but from the tiniest size to the largest one. I want to create a photo/multimedia project/collection but I don’t know how to ...
1
vote
2answers
146 views

With an old manual lens and modern digital camera, sharp image on the matte focusing screen, blurred one on the sensor

I tried to use an old Practicar lens 50mm/1.8 with Canon 450D, using an appriopriate adapter ring Practica B/Canon EF. Of course, this lens is completely manual in this configuration. Via the ...
2
votes
4answers
459 views

Cheap, unbranded 85mm f/1.8 prime lenses - are they optically any good?

Has anyone tried or even considered the Chinese under-£100 85mm f/1.8 primes for hobbyist/non-pro photography? Of course, they are only manual focus and build quality will not be as good as their ...
1
vote
3answers
268 views

How to find a camera compatible with old Sigma lenses that were used with Pentax MZ50 SLR?

I have some lenses off my old Pentax MZ50 SLR camera, and I would like to buy a new camera body. How do I find a compatible camera?
-1
votes
2answers
113 views

What lenses are compatible with older Canon EOS DSLR?

I own a Canon EOS 1100D camera that was released in 2011. What lenses are still compatible with this model?
0
votes
2answers
116 views

What are the distinguishing features of various Sony mirrorless camera models?

I am not a professional photographer and it is basically my hobby. I would like to buy a mirrorless camera and I have thought to get Sony a6000. Most of the time I take pictures of landscape and ...
1
vote
2answers
61 views

Macro - extension tubes vs reversal - how to choose?

I do a fair bit of macro photography, indoors with good lighting, using either a focus rail or manual focus pull to image-stack. I've always considered that using extension tubes for this gives me ...
0
votes
1answer
39 views

How does registration distance affect lens distortion and aberration correction?

If I use a lens with an extension tube, how does changing the distance between the lens and camera affect optical correction of distortion and aberration via glass elements (as opposed to digital ...
-2
votes
4answers
141 views

Why is zoom provided in Tokina 11-16mm?

I wonder what's the use of providing zoom in the Tokina 11-16mm. Why not make it an 11mm prime lens instead? It would contain less elements, so will produce sharper images. Also at such wide angle, ...
0
votes
1answer
657 views

Can the front glass on a broken lens be repaired?

I just newly broke this glass on my lens tonight. Wondering if I need to buy a new lens or if I can repair this. It is a Canon EF 85mm f/1.8 USM. This is my favorite lens to use for portraits!
0
votes
2answers
87 views

Is it possible to get green and red chromatic aberration?

In one of the hallucinating scenes in a video I have played. The vision is blurry and objects nearer the edges of the screen are green and red Now the usual chromatic aberration patterns are purple/...
1
vote
1answer
119 views

What can I improve in my social dance photography?

I love shooting social dancers. Can you give me constructive feedback at my latest albums what I do you like and what you think I can improve? https://stanyakimov.com/albums/ All photos are taken ...
0
votes
1answer
69 views

What lenses have the most human eyelike images [duplicate]

I have heard wide lenses make your head inflated which isnt good for portraits like the telephoto which deinflates your head. So If I use 35mm prime on full frame. Does it mean I will get perfect ...
0
votes
2answers
165 views

Why do I get so many unsharp pictures with my Canon 70-200 IS f/2.8?

Please take a look at the picture below. You can see where the focus point was thanks to a LR plugin. But the image is unsharp - again. And yes, I'm sure the dog was standing still enough for 1/250 ...
0
votes
3answers
151 views

Does a camera have to have a contiguous housing?

The lens group in this picture would have its own protective lens tubes like the one on a camera but one for each lens group. What would be an issue having a gap between the lens group and stray light ...
0
votes
1answer
196 views

Can a camera be a mile long?

Could parts of a camera be spaced out over a distance rather then together to work in a way a normal camera cannot? What characteristics would this camera have over a normal camera? In the picture ...
2
votes
0answers
223 views

What causes this repetition pattern in a picture? (when re-arranging its pixels by their intensity - code included) [closed]

Just out of curiosity, I was playing with RGB coordinates and pixels of pictures. Then for some reason I decided to get all pixels of a picture, get the RGB coordinates/values of each pixel (eg. RGB(...
23
votes
6answers
9k views

What is the farthest a camera can see?

At what distance can a face no longer be identified using a camera? At what distance can a figure of a person no longer be captured?
0
votes
1answer
56 views

Can the MTO-11 mirror lens be extended to 2000mm using an extension tube

In this link https://www.dyxum.com/dforum/ayone-knows-the-mc-mto11ca-10-1000-telephoto-lens_topic12136.html A poster claims that the 1000mm mto-11 can be extended to 2000mm by removing a stop and ...
1
vote
1answer
67 views

What is the mount with three tabs and two linkages on these Albinar lenses?

I have two Albinar lenses that I want to identify the lens mount for so that I can buy an adapter for my Sony A5000 (E mount) camera. I bought them at a yard sale recently. They are vintage lenses. ...