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by Vaman Kulkarni

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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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Value for money wide-angle lens for Sony A6000 [on hold]

Can somebody please give me a hint or two to decide on the best lenses for a reasonable price for Sony A6000? The main purpose of using that would be landscapes and architecture. I hear that Sony ...
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0answers
73 views

What can I expect with stacked lenses for extreme macro photography?

I need your opinions on stacked lenses setup for extreme macro photography. I own a Nikon D5600. I bought a Nikon AF-S 40mm f1.8G Micro lens together with the body. Then, Nikon, as a part promotion ...
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2answers
114 views

Polarization and Rainbows

Why when I use a polarized lens if I turn it one way the rainbow disappears and the other way it brings it out better to the point you can see the second double rainbow when the naked eye can't? Is ...
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2answers
84 views

Circle Imprinted on Photos - How to Get Rid Of? [duplicate]

Recently some photos I've taken have had a band of circles imprinted on the pictures. Is this caused by my filter or something with the lens itself? Attached a photo for reference. It only happens ...
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1answer
57 views

What filter size for a Canon PowerShot SX430 IS?

What size lens filter do I need for a Canon PowerShot SX430 IS? I have a 40.5mm UV filter, but it does not fit.
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1answer
81 views

Why Does Depth of Field Happen? Is there a simple explanation? [duplicate]

I think if our eyes are good there are not many situations where we naturally percieve a shallow DOF. How is it that lenses create this? What happens for shallow DOF to happen in photos and on movies?
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1answer
33 views

Is Sigma's lens hood LH-825-03 compatible with a 18-50 2.8 EX DC HSM Macro?

I'm looking for a replacement hood for my 18-50 f/2.8 EX DC HSM Macro, but I'm not having much success. I've instead found some hoods for the 17-50 OS (stabilized) version, which also has a 72 mm ...
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3answers
132 views

Should I avoid used lenses involved in video shooting?

When looking to get a used lens, I was told by a fellow (amateur) photographer to avoid buying lenses involved into video shooting. He didn't gave any explanation and left before I could ask him. ...
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1answer
57 views

Lens upgrade for Canon EOS 1100D [closed]

I have 18-55mm kit lens as well as 55-250mm, 50mm/f1.8 and 24mm/f2.8 lenses. What lenses should be required for upgrade in future?
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3answers
433 views

Sigma 150-600mm vs 300mm prime with extender?

Just wanted to get a few opinions since I'm a beginner. I recently purchased a Sigma 150-600mm lens, and I'm wondering if I made the wrong choice. I still have time to return or exchange. I'm ...
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1answer
39 views

Samsung NX3000 lens broken ribbon flex cable

I was trying to get sand out of my lens and accidentally broke one of the flex cables. I want to fix it myself but I don't know where to get the right replacement for the specific part it was attached ...
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4answers
710 views

How to find the focal length used by looking at image contents without examining metadata?

By looking at a photo, how can one tell what focal length was used without looking at the photo metadata?
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1answer
140 views

Nikon D3300 takes black images in daylight after fall: is it the body or the lens?

I have a Nikon D3300 DSLR with 18-55mm lens. It was working well, but yesterday fell from the tripod. Now, I am trying to take pictures, but it just says the subject is too dark and can't adjust the ...
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4answers
117 views

FX 50mm on DX sensor giving same picture as DX 50mm on DX sensor? [duplicate]

One of the lenses I have for my Nikon D3200 is the 50mm f/1.8 FX lens, which when placed on the DX sensor should act like a 75mm f/2.7. On my Sony a6000, I have a 55-210mm f/4.5-6.3 lens made for the ...
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3answers
191 views

What do the F and f numbers written on lens mean?

On this particular lens rim is written "F:2.6 f=3.8mm". What does it mean? Focal point 3.8 mm and aperture 1/2.6 of the focal point ???
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4answers
620 views

How can I take undistorted overhead top view pictures of a stationary gas compressor?

I need to take overhead top view pictures of a stationary gas compressor. How can I get the image to appear flat by adjusting the focal length? Example: I need to know what type of lense or camera to ...
2
votes
1answer
88 views

How to diagnose old Canon EF 35-105mm lens with autofocus motor too weak to reliably rotate lens barrel?

I bought a couple of old Canon EF lenses and they are very slow at autofocusing on my 350D. The worst offender is the EF 35-105mm f/4.5-5.6 USM. This lens regularly gives up moving the barrel after a ...
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1answer
56 views

How does a Canon FD to Micro-Four-Thirds adapter change the image?

I have a Lumix G7 and want to use a Canon FD lens with it (mostly because of the incredible price). The FD lenses I have in mind are the 28mm F2,8 and the 50mm F1,4. I know that the focal length ...
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1answer
83 views

Can a non-AF lens be used on a Canon 1000D AF camera? [duplicate]

Can I use a non-AF lens with a Canon 1000D AF body. Canon lenses use in-lens motors for focus, and the only connection is electrical, so I don't see why not. What type of mount and lens should I look ...
5
votes
2answers
2k views

What do these curved, color-coded lines mean on a vintage Nikkor lens?

This lens, a Nikkor 80-200 AIS, has some curved lines that are color coded to match the aperture ring. Originally I thought this was for focusing but playing around with it does not make it seem like ...
2
votes
2answers
115 views

Can I use a Speedbooster with a Canon EF-S DSLR?

Could you please give me some advice about a speed booster? I have a Canon EOS 750D. Lately I have been taking quite a few night event photos. I do not have a fast lens (and can't afford one) and my ...
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2answers
114 views

Are there adapters so I can use my lens converters on a Canon entry-level dSLR?

I have: Kenko Video Tele Converter KVC-20 II 2.0x XIT Elite series 3.7x AF telephoto lens Digital Optics Japan 0.45x Pro Definition with Macro lens Are there adapters for these which would fit my ...
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5answers
244 views

How to maximize the blurred background look with a distant subject (for example, 10m away)?

What lenses do I need in order to achieve the amount of bokeh that's on the image below? I am quite new to dslr photography, and I want to buy a new lens. My main objective is to get strong bokeh ...
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1answer
111 views

What does it mean when a Nikon camera returns an fEE error with several lenses that do not cause the same error on other Nikon bodies?

Here's a curious situation hopefully someone can shed some light on. I have a D750, an obsolete D100 (metaphorically) gathering dust, and the following lenses: AF Micro Nikkor 60mm 1:2.8 D lens = ...
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2answers
41 views

Sigma DC 18-250mm Macro HSM Lens Autofocus not locking to let me click the picture

I was travelling on a trip with my camera. One day I was using my Sigma DC 18-250mm Macro HSM lens on Canon 70D in autofocus mode to take a picture. When I pressed my shutter button halfway to focus ...
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4answers
146 views

Given aperture and focal length, what is the minimum distance for maximum resolution? [closed]

I'm going to describe a physics experiment involving imaging a proton beam using a CCD camera by reflecting it on a aluminium oxide surface, and we need some help about how close the camera should be ...
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3answers
84 views

What does the value of 'exit pupil' represent on a lens datasheet?

On this datasheet of the Kowa LM25HC lens I have access to, there is a number called exit pupil, which equals -57.9 mm. What does this number represent? This is not a question about what the exit ...
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1answer
287 views

Does anyone recognize this manual lens mount with three flanges and a single linking pin?

I bought this Vivitar lens cheap and I'm having trouble identifying the mount. I believe it's a Version 4 Serial number is 22128668
2
votes
1answer
40 views

Replacement lens-board ring name and sourcing

I've been having a hard time buying a good large format lens from eBay. I'm on my third order and the lens looks great, but it's missing the small ring that tightens the lens to the lens board. I'd ...
3
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2answers
146 views

How to take photos of planets with smartphone?

I'm not sure if this the right forum to post this question. I'm trying to find what is the best option to take photos of planets using smart phone. I have a Google Pixel XL, and I'm looking for a good ...
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3answers
476 views

Can I force the aperture to stay open on macro lens?

I have a sigma 180mm f/2.8 lens, which I bought because it was the largest aperture I could find that focuses around 0.5m See this question for why this was important.. Upon arrival, however, the lens ...
4
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2answers
144 views

Can I use new “designed-for-digital” Leica lenses with a Leica film body?

I'm planning on buying a Leica film body. However, newer lenses are much easier to find. Presumably, newer lenses have been designed for digital bodies. I read that the new Leica lenses for M mount ...
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2answers
121 views

My DSLR's autofocus doesn't work after I dropped it — how can I narrow down the problem?

If I try to focus by the shutter button the image doesn't change, even in live view (and I'm not be able to shot a picture). But if I hold the "AE-L/AF-L" button and click the shutter button I'm able ...
2
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3answers
196 views

Can I use a Smena lens on a Nikon DSLR body?

I found an old Soviet-era camera: Smena with T(Triplet)-22 4.5/40 mounted lens. I'm really curious about whether there is a way to mount this lens on a Nikon D3300.
3
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1answer
57 views

What are the differences among the various Rodenstock Sironar lenses?

I am hoping to buy a used 210mm Rodenstock Sironar N, which I understand is the same as an Apo-Sironar N. But I see a Rodenstock Sironar for sale on eBay, with no letter following. Where does that ...
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3answers
262 views

Is there any adapter to mount older Canon EF lenses on a newer Nikon DSLR? [duplicate]

Before the question, here’s some background story: My uncle just brought me his old Canon EOS 100 that he cannot use anymore because there is nowhere where he can develop photos. I am not going to use ...
2
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1answer
132 views

Why doesn't UFRaw automatically find the lens profile for one of my lenses, even though it's in the database?

When I open a raw image, made with a Canon EOS 600D, UFRaw for some lenses does not automatically find the lens profile. This is an example where it does find the profile: From the EXIF information: ...
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1answer
107 views

Manual focus lens on fixed focus camera?

Hello i have bought this camera: It is a lens type camera, but it has a FIXED focus. I read on the internet that if I buy and put a manual focus lens it will work? Is that true ? If it is true ...
2
votes
1answer
356 views

Is there a way to remove fungus without dismantling the lens?

I own a 1983 Minolta 35-105 lens which has a minor case of fungus on what I deem the second element (the first glass behind the outer one) The fungus seems to be growing, if only very slowly. As ...
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votes
3answers
273 views

Is there any way of dealing with or reducing lens vignetting with a wide angle?

So I finally got around to purchasing a Nisi 150mm filter holder and a couple of filters for my Samyang 14mm AF lens. Seems fine so far except that the holder itself causes some vignetting, with part ...
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2answers
3k views

What are these clusters of branching structures on/in my lens?

I packed a Tamron 28-75 lens away for over a year. When I took it out of storage examined it, I found clusters of branching structures on or in the front element. I Took it to a camera store and they ...
2
votes
2answers
189 views

Is this a bubble in my lens element?

Both images show the same artifact.
6
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2answers
276 views

What is the cause of inclusions in my bokeh?

I was doing a lens review an two of my lenses showed these rather unsightly inclusions in their bokeh. There are two different lenses. EDIT: The third lens I have tested also seems to have this ...
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2answers
108 views

How would this fare as a makeshift polariser for somebody on an extreme budget?

This 150x150 polarising filter sheet/gel After having contacted the seller, they said it's something people often use in photography? I'm assuming it wouldn't be anywhere near as useful as an actual ...
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0answers
34 views

Should I buy several ND filters or one Variable ND filter? [duplicate]

I have a standard 28-70mm lens I'll be using which came with my Sony A7. Whilst I plan to use separate ND filters for my other wide angle lens, I'll be using this lens for general nature and landscape ...
5
votes
4answers
244 views

Distance-creating “lens”?

On another recent question I noted that it's theoretically possible to take "short-range" pictures that have the perspective as if they were taken at a distance, by means of a system of mirrors: To ...
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1answer
293 views

Why isn't a Sigma HSM lens autofocusing with my Nikon D5600 — is there a compatibility problem?

Today I had a chance to try a Sigma 70-200mm f/2.8 EX DG OS HSM, a 2013 model lens, on my Nikon D5600. Everything was okay. I was able to take pictures with it. But auto focus didn't work as it should....
3
votes
2answers
122 views

Why do camera bodies and some lenses both have autofocus / manual switches?

Why is it that lenses come with an AF option when the camera has the same? Which controls the AF? One would think that they contend with each other for control. Why have two entities doing the same ...
6
votes
2answers
2k views

How can I get headshot portraits with pleasing, natural perspective if I'm constrained to a short distance?

I know in a portrait photo we use distance between camera and the subject in such a way as to create a pleasing and hopefully natural-looking perspective. I think it's good on 1 ~ 1.5 meter to get a ...
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3answers
86 views

If I buy certain-sized filter system, for example a 150mm holder, which size filters can I use for it?

Would they have to be strictly 150mmx150mm holders? Or could they also be rectangular, such as 150mmx100mm for example? Sorry for the basic question - I'm pretty new to filters and its peripherals.