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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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0answers
22 views

Should change body or glass

ive been using a nikon d3100 body and the stock lense that came with it. ive been looking at new bodys, but ive also been looking at lenses. the body ive been looking at is 24 mp opposed to the 14 on ...
6
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4answers
75k views

How do I choose between 24-70 f/4 and 24-105 f/4 Canon lens?

I am getting a new medium range zoom lens for general use and occasional weddings. This new 24-70 f4 was top of my list until I watched this review: Canon 24-70 f/4 L IS vs Canon 24-105 f/4 L IS - ...
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1answer
52 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 ...
1
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1answer
128 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. ...
3
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2answers
2k views

Is the size of the entrance pupil the same as the size of the effective aperture?

I understand that the entrance pupil is the image of the aperture as seen from the front of the lens. However, is the size of the entrance pupil the same as the size of the effective aperture? In ...
12
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2answers
867 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 ...
2
votes
1answer
100 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. ...
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2answers
62 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 ...
2
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4answers
431 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 ...
4
votes
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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1answer
65 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 ...
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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 ...
4
votes
2answers
887 views

What's causing this white smudge in the middle of the photo?

Specifically, this photo. . This was taken with a Canon 1000D, with a 1985-ish Admiral/Panagor 55-225mm manual telephoto/macro that I picked up for cheap at a charity shop; it's a Minolta mount, so ...
3
votes
6answers
47k views

How do I fix a stuck zoom ring on Nikon 18-55mm AF-S?

I have a Nikon D3100. The zoom ring on the lens that came with the camera is stuck. The lens is a AF-S NIKKOR DX, 18-55mm. Is is broken, or just stuck and is there anything I can do "unstick" it. ...
3
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2answers
8k views

What is the difference between the Canon 55-250 IS II and 55-250 IS STM lenses?

I am a beginner in DSLR, and would like to purchase another lens other than the kit lens (18-55mm STM) that came with my Rebel T5i/D700. After much googling, and reading of blogs, I have decided to ...
187
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15answers
123k views

What do all those cryptic number and letter codes in a lens name mean?

When looking at a lens name, there are a lot acronyms describing its features (often specific to the manufacturer). Examples, Nikon: Nikon AF-S DX 16-85mm VR f/3.5-5.6G IF-ED Nikon AF-I 600mm f/4D ...
8
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1answer
1k views

Why are so many kit-lenses parfocal if it's an expensive feature?

According to this answer, parfocal lenses (lenses that can zoom in/out without losing focus) are relatively rare and more expensive. However, the original poster's kit-lens is parfocal. Additionally,...
29
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2answers
17k views

How do I properly position a lens hood?

I understand the basic idea of a lens hood, but after looking at mine and contemplating how to use it, I get stuck on the same question every time: Does the orientation of the hood on the lens matter?...
2
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4answers
1k views

Is the Pentax DA 35mm F2.4 AL a good choice for street and night photography?

I've recently bought a Pentax K-50 and I'm looking to move beyond the 18-55mm kit lens. I'm a beginner hobbyist and my main aim is to take beautiful photos of Tokyo, where I live. So mostly street ...
1
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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 ...
30
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10answers
28k views

Why there is no image-stabilized Canon 50mm lens?

Canon's 50mm prime lenses are all non-IS (Image Stabilization) for some reason. Considering the popularity of these range primes, shouldn't Canon be interested in shipping a new, optically improved IS ...
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
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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 ...
1
vote
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 ...
2
votes
2answers
96 views

Are there any good resources that provides information about the focus breathing of various lenses?

Sites like DxOMark provides a lot of information about lenses but they generally don't provide any really usable information about the focus breathing protperties of the lenses. In fact I don't know a ...
1
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4answers
195 views

Which of these lenses should I take to a motor racing event?

At short notice, I'll be going to a motorsport event (in a purely non-professional capacity, for what it's worth). In addition to a medium telephoto lens, I'm considering taking a lens with a shorter ...
5
votes
1answer
3k views

How do I remove a broken lens mount ring from a lens?

Today my Nikon d90 was drop with attached Nikkor 18-200mm lens. The lens detached from the body and ripped of the metal ring with screws from the body. How can I fix it? I don't know how to remove the ...
1
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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 ...
82
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11answers
7k views

How much do lens lineups vary across DSLR platforms?

I was reading this question and recalled how often I hear the advice "choose your lenses and then choose the body that matches" in the context of deciding on a camera platform (Nikon/Canon/Pentax/Sony,...
24
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3answers
3k views

Why am I allowed to turn my focusing ring beyond infinity?

Is there a good reason why I can turn the focusing ring on my lenses beyond infinity mark on focusing scale? Following recent questions about focusing in the dark (here and here), it sounds like a ...
0
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7answers
267 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 ...
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2answers
505 views

Why is my Canon EF 85mm f/1.4L IS USM lens making a ticking noise?

My Canon EF 85mm f/1.4L IS USM lens is making a noise I never heard before. It takes pictures and focus as usual but produces a constant ticking noise when the image stabiliser is turned on.
17
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11answers
39k views

Which prime lens for Pentax APS-C?

My girlfriend is buying a Pentax K-5 (I already have a Pentax DSLR so we thought it made sense for us to be able to share lenses), and she's not sure about which lens to get with it, so I've been ...
4
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5answers
608 views

Small haul of Pentax gear, what have I got here?

Following up on my previous post, I have inherited a collection of Pentax gear from my dad but am not really sure exactly what I've got - I doubt any of it is very exciting but is it worth following ...
3
votes
1answer
360 views

What is this Dimension-brand 135mm lens?

Kind of what it says on the tin. I got this lens, sans caps, as a gift from a friend (who doesn't really know photography). It's dusty but otherwise seems to be in decent condition, but I can't seem ...
12
votes
8answers
33k views

What is a good wide-angle prime lens for Nikon DX (APS-C) format?

I am looking for a wide angle lens for my D90, between 12 and 18mm focal length, preferably a prime, because I like fast(er) and cheap(er) lenses. Any recommendations ?
8
votes
1answer
2k views

What is this old 50mm f/1.9 lens?

I purchased this lens for $5 at a thrift store. It's fully functional and the glass seems in good condition, however, I cannot identify the mount or the lens (the front name ring is missing). When I ...
1
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0answers
47 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
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1answer
194 views

How do these three 100-300mm lenses for Canon EF mount compare?

I’m trying to decide on a 100-300mm constant aperture lens to complement my current kit. I am considering the following options Canon 100-300 f5.6 L Tokina 100-300 f4 Sigma 100-300 f4 Which of these ...
3
votes
3answers
1k views

How can I remove a piece of dirt from inside the lens system of a compact camera?

Background I have a Panasonic Lumix compact camera, which, out of nowhere caught some piece of dirt between the lenses or on the sensor. I ensured that it was not on the outside of the lens. When ...
3
votes
2answers
442 views

What is the purpose of various lens markings on Vivitar 135mm f/2.5 lens with TX mount?

I was gifted some vintage gear. I'm estimating the Vivitar lens in question is from the mid-80's; I believe my relative bought it to supplement an Olympus OM-PC. This lens has color coding on the ...
13
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9answers
29k views

Would the 40mm pancake or 50mm prime be better for street photography with a Canon APS-C camera?

I have a Canon EOS 600D, and I already have 18-55mm,55-250mm. I plan to buy a new lens for street photography. I already have picked out one of the following lenses: 40mm STM(pan cake). EF 50mm f/...
2
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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
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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/...
4
votes
4answers
2k views

Will I not be able to AF with a 2× teleconverter?

My setup is a Canon EOS 600D with a Canon EF 70-200mm f/4 L (non-IS), and I really want to buy a 2× teleconverter (1.4× is too short). I have done a lot of research, but I can't wrap my head around ...
3
votes
3answers
841 views

Can you recommend a good budget prime lens for family photos (Canon mount) [closed]

I'm very new to photography. Have a Canon T3, with the standard 18-55 lens and a 75-300 mm lens. I'm looking to do a lot of family photography (wife with 2 kids less than 2 years old). Most of the ...
-5
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4answers
894 views

24-200MM lens for Nikon D850?

I am looking for any one (single) lens that can cover the 24-200MM range for my Nikon D850. Constant aperture is not needed, however it would be nice to have. Vibration reduction would also be a nice-...
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 ...