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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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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 ...
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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
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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 ...
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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 ...
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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, ...
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5answers
32k views

How can I easily tell if a sensor or lens is damaged?

I am pretty interested in recognizing any damage to digital camera in very low level (without any advanced tests). For example, how can I identify the damage of a sensor or lens? If there are any ...
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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 ...
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0answers
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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 ...
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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 ...
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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 ...
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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. ...
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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 ...
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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 ...
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6answers
16k views

What is the relationship between focal length and shutter speed?

I am very new to photography and am trying to grasp the basics of it these days. Can someone please help me understand the relationship between focal length of a lens and shutter speed of camera?
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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 ...
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4answers
202 views

Which lens is best for athletics?

I am an athletics photographer, and I have a dilemma. First off, I use the 5D Mark II body. Currently, I own the 100-400mm f/4.5-5.6 USM II, and I LOVE it... except for indoor photos. Before I ...
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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 ...
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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....
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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1answer
95 views

What should I do when my D3400 aperture is stuck no matter what lens I use?

I have a D3400 and recently I haven't been able to change the aperture on any of my lenses in manual mode. I have lenses with aperture rings and if I set the aperture to anything below the largest ...
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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 ...
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2answers
1k views

How do I decide the best aperture to use with my Canon 18-200mm lens and 50D?

I am using a Canon 50D with the 18-200mm lens it came with. Some of my pictures turn out un-sharp, even taking metering and Auto Focus points into consideration. I wonder if this is caused by my ...
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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 ...
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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 ...
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4answers
6k 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?
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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?
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4answers
688 views

What is the significance of the word “Color” in the names of some older lenses?

This seems closely related to How does a lens affect the saturation of a picture?. Some older lenses I've seen contain the word "Color" in the name, such as Color-Yashinon and Color-Skopar (the ...
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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) ...
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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 ...
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6answers
1k views

Is the Nikon AF-S NIKKOR 18-35mm f/3.5-4.5G ED Lens good for portrait, landscape and general use?

I have a Nikon D3300 which comes with a kit lens 18-55mm. The quality and versatility of the kit lens is a bit limited so I purchased both a Sigma 70-300mm f4-5.6 and Nikon 50mm f1.8. What I've ...
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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?
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6answers
2k views

Is there a reason to keep both a 18-55mm f/3.5-5.6G and a 16-85mm f/3.5-5.6G lens for my Nikon D5100?

I have the AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G ED II that came with the camera. However, I've been looking at getting the AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR lens, which has the same range of ...
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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?
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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 ...
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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 ...
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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?
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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 ...
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3answers
3k 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 ...
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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 ...
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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?
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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 ...
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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 ...
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1answer
81 views

How can I tell whether or not a lens has focus breathing?

So recently I got a 90mm macro lens, installed a focus bracketing app onto my camera and let it run. Unfortunately, turned out that this lens has focus breathing which means the actual zoom level in ...
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3answers
666 views

Will a 400mm lens on a Canon 7D help me get better detail of birds in flight than my Panasonic FZ1000?

I am using a Panasonic Lumix FZ1000 with a built in 25-400 lens for bird-in-flight photography. My pictures are coming out good with the FZ1000, I’m just not able to get the size and detail of far ...
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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?
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3answers
107 views

Does white balance change from lens to lens? [duplicate]

Does white balance change from lens to lens? Though I think it does not, the reason I ask is auto white balance with a wide-angle lens seems to be different from auto white balance with a macro lens. ...