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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.

12
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2answers
857 views

How do apertures which seem too large to physically fit work? [duplicate]

A 400mm f4.0 lens is supposed to have a maximum aperture diameter of 10cm. Looking at such a lens they don't seem big enough to fit that kind of aperture including all the mechanics for control inside ...
0
votes
2answers
61 views

Canon Rebel T5 DSCR zoom lens recommendation

I am going on an Antartica cruise and want to take long distance photos from my balcony and want a zoom lens that won't kill my budget (can't afford those $2,000 lens'). Would appreciate any ...
0
votes
1answer
51 views

How to identify the original manufacturer of lenses branded Soligor?

There are Soligor-branded lenses for which I wish to identify the manufacturer. I have read that Soligor encoded the manufacturer in the serial number, so in principle, I just need to find a list of ...
0
votes
1answer
64 views

What is the difference between the various image-stabilized Canon 18-55mm lenses? [duplicate]

I'm looking at buying a new 18-55mm lens as the one that came with my 4000D doesn't have image stabilisation, which I really need. It seems like canon have made many EF-S lenses over time that all ...
1
vote
1answer
43 views

What lenses other than MD can I use with a Minolta XG-7 camera with an adapter?

I recently bought a Minolta xg-7 camera at a thrift store. The store only had the body available but it was so cheap that I thought I could by a lens separately. I have found a few MD mount lenses ...
1
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3answers
81 views

Canon EF 200mm f/2.8L II USM or Canon EF-S 18-200mm f/3.5-5.6 IS?

I need a recommendation. I want to buy a telephoto lens and I don't know a lot about photography. I am looking at these 2 options: Canon EF 200mm f/2.8L II USM: Fixed lens. Fast (f/2.8). Effective ...
1
vote
0answers
77 views

Using Nikon PS-4 bellows to copy 35mm negs

I want to digitize my old b&w negs, and have an old PS-4 bellows unit to use on my Nikon D5200, an SLR with a DX format sensor. My PS-4 manual predates DX, and shows a table with lenses from 20mm ...
1
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0answers
46 views

Is it a fungus or something else?

the following picture is from my dad's Konica Hexanon f/1.7. Would you call the white layer a fungus, haze, dust or something different? Thanks
0
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2answers
109 views

Travelling, Need a new lens [closed]

I am travelling at the end of this year so I want to use this time to save for a lens. I have the Canon 5D MKIII and when I stopped photography for a while due to other commitments I sold my other ...
2
votes
1answer
50 views

What is cause of spots in image taken with dusty Nikkor AF-S DX 18-200mm ED VR II? [duplicate]

Dust or pollen inside this lens is common problem so I finally removed the front element and cleaned it, but even after this procedure I have the very same specks in a video as before. So I guess it's ...
0
votes
7answers
263 views

Is Canon 50mm f/1.2 with Canon EOS 80D suitable for portraits, landscapes, travel/nightlife photography?

I'm purchasing my first DSLR camera (Canon 80D) in a few weeks. I want to use it mostly for portraits, landscapes, travel/nightlife shots. I've come across the Canon EF 50mm f/1.2L, and wanted to know ...
2
votes
3answers
91 views

Does field of view change for different lens model for the same focal length?

I am using two lenses - Tamron 75-250mm F/3.8-4.5 Model 104A and AF-P DX NIKKOR 70-300mm. When shot with lenses set to 250mm of focal length, the field of view for the Tamron lens is greater than the ...
0
votes
4answers
93 views

Looking for a travel lens for Canon 5D MKIII [closed]

I've decided to change my style of photography and I'm more interested in doing travel photography and landscape. Im stuck between getting the 16-35 f4 IS and the 24-70 F2.8 MKII. Which one should I ...
1
vote
2answers
91 views

How can a lens produce better (or worse) colors than another one?

So I was looking the Lomography Lomogon 32/2.5 Lens, which looks pretty cool. However in the copy they claim that it produces images with great color. Now if the lens glass is slightly tinted, then ...
-1
votes
1answer
87 views

Stuck lens off - scared to reattach another lens

I managed to get my 50mm lens off my camera (it was stuck) and it looks like one of the lens pins was broken. I'm scared to reattach another lens. Was it the camera body that was making the lens stuck ...
0
votes
1answer
62 views

Why does some lenses have red focus points on their focus rings? [duplicate]

A typical lens have white focus indicators on their lenses [5m 50m and infinity] but some have red points for 85m and farther and some lenses have a red curve instead of numbers. What are these red ...
2
votes
1answer
97 views

How can I do 4x5 rise/fall movements with super wide angle lenses?

I'm looking for super wide angle lenses, ideally 50mm and below. I'm only interested about decent rise/fall movements because I do mostly architecture, and I'd like to be very close to the subject. ...
0
votes
1answer
94 views

Can I use the Canon 55-250mm lens on my Nikon D5200 body? [duplicate]

Can I use the Canon EF-S 55-250mm f/4-5.6 IS STM lens on my Nikon D5200 body?
-1
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0answers
27 views

Nikon D7100 with Nikkor 18-55 mm lens not working

When I put on my 18-55mm Nikkor lens on my D7100 camera, no information shows up on the display area in automatic. If I switch to manual the f-stop is on 0, it will take a pic but it is black. My ...
2
votes
5answers
187 views

Why is low chromatic aberration considered important in the digital era?

I have read many lens reviews. It seems that low chromatic aberration is considered an important property of lenses. However, film is a dead dinosaur today. Practically everyone is using digital ...
-1
votes
1answer
67 views

Which lens with Canon700D for landscape and travel photography? [closed]

I have got an iPhone X from which I have been taking landscape and travel photos. But I have also got a 700D with 18-55 and 55-250, which I never really used. Currently, I am not thinking of ...
0
votes
1answer
108 views

Does Canon EF 50mm f/1.8 II work with Canon 200D? [duplicate]

I want to buy a Canon EF 50 mm f/1.8 II. Does the Canon lens EF 50 mm f/1.8 II work Canon EOS 200D?
1
vote
2answers
124 views

How to choose focal length (35/40/50) for flower and plant product photography?

I own a Nikon D3500. I want to buy a lens so I can take photos of products (Flowers - Bouquets - Plants) to upload to my e-shop. I am working on a flower shop. I already have a white studio 90cm X ...
2
votes
1answer
108 views

How to choose a 1 or 2 lens “starter kit”?

For someone that is starting one this world of photography, is it a 2 lens starter kit a good option? Having, since the beginning, a series of lens options, helps developing the sense of which lens to ...
0
votes
2answers
78 views

Aperature/f stops/lenses [duplicate]

I am interested in landscape photography and a common point I hear thrown around is that a higher aperture (f11-f22) is best for landscape photos. However, every blog, YouTube video and photography ...
2
votes
2answers
73 views

What attachments to get shallow depth of field with a smartphone?

I'm doing a research project involving machine vision, and would ideally like to find a lens with a shallow DoF (perhaps about 2m or so in-focus) that can be attached to a smartphone. Something that ...
7
votes
4answers
261 views

Would a 50mm lens on a Canon APS-C crop produce the exact same image as an 80mm lens on a full frame camera?

Scenario: I put a 80mm lens on a FF camera and take a picture I put a 50mm lens on a Canon APS-C crop camera (1.6x crop) and take a picture Going by the 1.6x crop, I understand the fields of view of ...
3
votes
1answer
101 views

What is lens astigmatism?

Can someone simply explain astigmatism and its different types? How are they caused in lenses, and how can they be identified in images? I'm looking for a simple, understandable explanation. I've ...
2
votes
2answers
158 views

How will tiny scratches on rear element affect image quality?

I have found a rather cheap Mamiya G 50mm f4 lens on ebay that has some tiny scratches on the rear element of the lens. Now, I have done some research on how much such scratches could affect the ...
0
votes
3answers
109 views

How to decide between 28/1.8 non-IS and 35/2 IS to complement 50/1.8 non-IS on Canon DSLR?

I have a Canon EOS 2000D DSLR (crop factor approximately 1.6). As the lenses, I have 18-55 mm IS zoom (f/3.5-5.6) and 50mm non-IS fixed focal length (f/1.8), and have ordered a 55-250 mm IS zoom which ...
1
vote
3answers
245 views

Which modern lens can achieve this kind of depth of field?

Im interested in knowing why the depth of field(mostly the background blur)in the Old image is very different from the depth of field in the New image? More then DoF the blur in the Old image is ...
2
votes
2answers
75 views

Better Circular Polarizer for Sigma 150-500mm APO HSM [duplicate]

I recently used my Sigma 150-500 lens to shoot my son surfing. I was using a circular polarizer. The shots all appear out of focus even though focus was good and depth of field was good, even though ...
1
vote
1answer
137 views

How to choose between Canon EF-S 60mm f/2.8 Macro USM and EF-S 35mm f/2.8 Macro IS STM

I'm looking for a macro lens for my Canon 80D. The two crop-specific offerings from Canon are the EF-S 60mm f/2.8 Macro USM and EF-S 35mm f/2.8 Macro IS STM. They're both on the affordable end of the ...
0
votes
3answers
121 views

Want to upgrade Canon T6i and need guidance

I have a Canon T6i and mainly use a Sigma 18-250 lens. I photograph lots of stuff (landscapes, my kids, sports, architecture, wildlife, etc). I have a good wide angle lens for the landscapes. I want ...
3
votes
1answer
40 views

Where can I find service manuals for old (and new) lenses?

Besides Google, where can I find service manuals for old (and new) lenses?
1
vote
1answer
93 views

Can mounts on Vivitar 75-205mm lenses be swapped?

I have a Vivitar 75-205mm f/3.8 MC Macro Focusing Zoom Lens with a Minolta MD mount. Would the Nikon AI Mount from the same lens (Vivitar 75-205mm f/3.8 MC Macro Focusing Zoom Lens Nikon AI Mount) ...
2
votes
3answers
178 views

In photo taken with a prime lens, what is the cause of the “zoomed” bokeh appearance?

This image was taken with a Vivitar 24/2 (Kiron) prime lens. The lens is sharp. The focal plane is reasonably flat, and there is barrel distortion. The bokeh balls have an oval shape in which the ...
0
votes
1answer
47 views

Can I use a lens with aperture ring on an adapter that has its own aperture ring?

I want to use a Helios 44K-4 58mm f/2 on my Sony A6000. I found an adaptor with aperture ring, but the lens already has an aperture ring. Can I use it anyway? This is the adapter: K&F Concept PK/...
2
votes
7answers
239 views

Are there add-on lens accessories which collect additional light, as a parabolic microphone can be used to gather more sound?

I recently imagined a useful accessory. Suppose you need an fast shutter and low İSO photo but your APSC camera doesn't help much nor does your telephoto lens with very small aperture in the middle ...
0
votes
3answers
201 views

How do I choose a prime lens to get blurred backgrounds for full-body street photography shots?

I like to shoot street photography, say with the subject far enough away in the image that I can capture the full body, and still get focal blur in the background. My kit lens gives a decent effect of ...
0
votes
1answer
66 views

need help picking a lens [closed]

hello I do hope some one can help me I'm torn between the to top lens in the photo the sigma 35mm 1.4 or the Sony 35mm 1.8 the Sony is sharper and cost 1/2 the price and the chr. aberration is less. ...
2
votes
1answer
100 views

What is this colorful 'C' shape blemish in this old Vivitar 28-85/2.8-3.8 lens?

What is happening with this lens? Bought in a box of used lenses. Clearly it has met with some abuse, but I'm not familiar with what's actually happening. It has this colorful 'C' shape somewhere ...
0
votes
1answer
140 views

What is the focusing mechanism on a Sigma 18-35mm F1.8?

I'm considering buying a Sigma 18-35mm, f/1.8 DC HSM ART but I am not sure about the focusing: Is it a "direct manual" focus, or does the focus ring just control a servo? Does it have hard-stops? How ...
1
vote
1answer
123 views

How wide does the front element of a lens have to be, given the focal length and the aperture?

Clearly, a lens with focal length F and aperture 1/f has to be at least F/f mm wide. Maybe a little more to accommodate the angle of view. However, lenses tend to have wider front elements than F/f. ...
0
votes
2answers
54 views

How do constant aperture zooms produce identical exposure, even though focal length is larger? [duplicate]

My understanding is that a larger focal length corresponds to a larger working aperture diameter, since the numerator is larger. Why doesn't a larger working diameter correspond to a brighter image? ...
2
votes
6answers
188 views

Lens for cosplay shooting at events on DX sensor

I know this question is searchable in Our Lord Google, but I find most answers over there assumes a FX sensor, and still I don't have things very clear. Well, I'm just a beginner photographer that I ...
4
votes
4answers
2k views

Why we can't use telephoto lens for macro objects?

As I know the focal length of macro and tele lenses are the same, which is around 200mm. Now I wonder, why we can not use tele lens for macro photography? P.S: Both macro and tele lenses have a focal ...
1
vote
2answers
410 views

Why can't I auto-focus on semi-close subjects with my new Nikon 50-300?

I just got a new lens (Nikon DX 55-300) for my Nikon 3300 camera. I am just a beginner, however when I try to focus and capture something semi- close by (in the same room) it does not allow me to ...
1
vote
2answers
99 views

which is better for makeup videos and portrait; canon 50mm f/1.8 or a 55-200mm f/4.5-5.6 , and why?

I make makeup videos for youtube and recently got the canon rebel T5i as well as the 50mm f/1.8 and 55-200mm f/4.5-5.6 lenses. I am not sure which is better for taking photos and which is better for ...
2
votes
3answers
168 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 ...