Questions tagged [camera-basics]

Camera basics are the timeless and generic aspects of cameras; even as technology evolves, these things will remain essentially the same.

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7
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4answers
2k views

Is camera lens focus an exact point or a range?

I have often wondered if the focus of a lens at a particular focal length is an exact point or a range within a few millimeters. This becomes all the more important when manually focussing. How far ...
2
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3answers
147 views

Why would a camera change colors on the image when producing JPEGs?

There's a room with windows closed by curtains, it's night outside and the only light source is a set of LED filament lamps inside the room. Lamps are designed to have 2200K color temperature to have "...
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7answers
6k views

Why exactly do action photographers need high fps burst cameras?

I've heard that sports and wildlife photographers need cameras that can take lots of photos in a second in the burst mode. But why? Yes, simple question — but why?
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3answers
185 views

A projection of a real-image is one fixed perspective, but looking through the lens with my eye, I see many perspectives. Why?

Assume that I have a camera obscura (with a large lens - something like a magnifying glass) setup projecting an image of some still life. I look at my projection on my projection plane and I see one ...
2
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2answers
143 views

Why can my eye focus on the real image of a convex lens at many distances from the lens, but a projection only works at a specific distance?

Say I have a single convex lens. I set it up like a camera obscura, shine a light on my object and project the image onto a projection plane. Given the focal length of my lens, the projection plane, ...
0
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1answer
80 views

Which mode is the best for taking pictures: manual, auto, or portrait? [duplicate]

Which one is the best mode for taking pictures: manual, auto, or portrait? Or if any other mode is better, please state what it is.
0
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2answers
186 views

What is the difference between a 3D camera and a stereo camera?

I just started with image processing and came across 3D cameras. But, I couldn't understand much. Are 3D cameras same as stereo cameras? My understanding of stereo cameras is that there will be two ...
0
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1answer
708 views

Will a larger sensor provide better video quality?

I am looking for a mid-range camcorder which can shoot at least somewhat better videos than a phone (like Samsung S6). While searching for camcorders, I came across the Panasonic HC-V777 and Sony ...
22
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5answers
6k views

Why doesn't the picture become darker the more you zoom in?

As your lens's focal length gets longer, fewer photons pass through the lens to hit the mirror/sensor. Why don't you see darkening when you look into the viewfinder and zoom in with a zoom lens, and ...
-1
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1answer
116 views

a general account on parameters of a camera; which are innate, which are derived, which can be processed later, etc [duplicate]

So we all know there are 3 golden parameters in camera: aperture, iso, shutter speed. I could sense those 3 parameters are innate, which means they are directly related to the mechanics of the camera, ...
6
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3answers
2k views

First time - Night Club Photography - what gear do I need?

One of my friends wants me to shoot some picture of him/people at the club where he is a DJ. But I just started out so I don't have so much knowledge on it so I need some help. My gear: Sony α6300 ...
2
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2answers
255 views

External Flash triggered by camera's internal trigger

I am stuck. I am starting to understand and try Flash photography with my Canon 750D. I have ordered a yongnuo 560 iv just yesterday. Now as I am tight on the budget, I have not ordered a trigger ...
11
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4answers
6k views

Why does my camera hesitate when shooting?

It seems like when I take a picture, the end result is not the picture I wanted because it hesitated and took too long. I have a Nikon D3300 and just use the auto focus. What am I doing wrong?
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1answer
510 views

Understanding the differences among Rolleiflex TLR cameras

What's the difference among the following Rolleiflex cameras: Rolleiflex 3.5T Rolleiflex 3.5F Rolleiflex 2.8C Rolleiflex Automat What's the right one to choose for beginners of medium format ...
2
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1answer
5k views

What does “12MP + 12MP Camera” mean in the specs of a mobile phone?

I have seen some mobile phone specifications that mention "12MP + 12MP Camera", such as these specs for a Samsung Note 8: 12MP + 12MP Camera 8MP Front Camera 6.3" Display 64 GB Memory 6 GB Ram 2.3 + ...
6
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3answers
596 views

Are scene modes on compact camera much useful?

The scene mode selecting dial on my old compact camera is highly sensitive now, it could easily switch the mode even I don't touch it. Unfortunately there is no spare part left on this model, so I ...
-1
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2answers
167 views

What type of lens can portray a blurred, wide background but not make the subject look so far away?

What type of lens should I be looking for to take portrait photos? I would like a lens that portrays a blurred background and also captures a wide background while not making the subject look so ...
0
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3answers
662 views

Why doesn't the focal length in EXIF change when I manually focus my DSLR?

I tried to take several pictures with a DSLR ( Nikon D3200 - 18 to 55mm zoom lens) with manual focus mode. I changed the manual focus randomly and clicked several pictures one after another. I was ...
5
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4answers
2k views

What does a more expensive camera offer over cheap ones — and why are they so much more expensive?

I have a point and shoot camera which cost 13k (about $200 US). Wedding photographers have cameras in the 500k range ($8000). What is the fundamental difference between our cameras? Why this huge ...
-1
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7answers
466 views

When to use high iso and a short shutter time and vice versa? [duplicate]

In what situations you can use a high iso value and a short shutter time, or use a low iso value and a long shutter time? What will be the difference between two pictures of exactly the same scene, ...
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2answers
2k views

What happens if i rotate the film rewind?

Can someone tell me what happens if I rotate the film rewind(back cover open knob) when the film is still in the camera? I accidentally moved it.
0
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2answers
932 views

Manually rewind unused film to its canister

I need an advice. Because I'm a total amateur camera-lover. So I just tried to load a film on a point shoot camera without having any idea if the camera is working or not. I loaded it smoothly. BUT, ...
10
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6answers
4k views

Why do moving objects in photos appear blurry?

When taking a photo on most cameras, if you take a picture of a moving object, the object appears blurry. Why does this happen exactly?
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4answers
216 views

How to compare 2 cameras' color accuracy quantitatively with standard color chart?

I need to compare the color reproduction accuracy of 2 cameras quantitatively, in RGB space or Lab space. In my set-up, I use the same standard lighting source, same lens(same focal length and same ...
5
votes
1answer
109 views

What “makes” contrast, anyway? [closed]

Or better, the loss of it? If I take a picture of a uniformly white wall, I don't expect contrast at all and that's ok. But sometimes I take photos of a a scene where there are light areas, dark ...
-1
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3answers
755 views

How to calculate distance of an object from camera or size of an object in an image? Have to utilise already generated camera parameters to find these [duplicate]

How to calculate distance of an object from camera or calculate the size of a object in an image? Given that, I have already generated the camera parameters (intrinsic and extrinsic). I have to ...
0
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2answers
174 views

How to read a histogram? [duplicate]

Cameras can show a graph divided by 3 vertical lines. What does this graph describe about the picture, and how can I learn how to read it?
4
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3answers
1k views

Can we compare the color reproduction accuracy of 2 camera sensors only by looking its sensor spectral sensitivity curve?

I have the camera specifications from the manufacturer. The RGB quantum efficiency curve (I think it is also the spectral sensitivity curve) is provided. How can we compare these two cameras's quality ...
13
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8answers
1k views

Since the speed of light is so high, why does shutter speed even matter?

When a camera's shutter is opened, if light reaches the sensor instantaneously (speed of light = 300.000 km/s), why does shutter speed modify picture sharpness/detail? Why do pictures get darker with ...
0
votes
3answers
909 views

How can I find a compact camera where I can change the lens?

I would like to purchase a compact camera. But usually they are limited in optical zooming. So, I would like, if possible, to add/replace lens hardware with a different lens with better optical ...
0
votes
1answer
151 views

Can I optically zoom in but still capture the content seen when zoomed out?

I have a general question regarding optical zooming. By taking an optically zoomed picture, the result is essentially a fixed-size picture that cuts off the surroundings in order to zoom in on a ...
0
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2answers
708 views

Does the body of Nikon D750 make clicking sound/noise when moving it up and down?

I just got a brand new Nikon D750 body. However, I found that the package has a lot of room to move around so I don't know if there was any damage done to the camera body during the shipping. When I ...
0
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2answers
191 views

Canon EOS 350D lens [duplicate]

So I'm getting a canon EOS 350D body only camera and I was wondering what the best 'starter' lens would be. I have a budget so I would like the price to be as low as possible. It's for photography at ...
6
votes
2answers
926 views

Olympus OM-10 35mm - Film not gone all the way back into the cartridge

I've recently purchased an Olympus OM-10 off ebay, seems to be in good condition, only issue is I've just tried to unload my first roll of film (Fuji Superia 400) and I'm not sure its done it right. I'...
-2
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1answer
75 views

Camera models for intermediate and beginners [closed]

I'm starting to get into photography and wanting to take a class. The camera that they are requesting needs to the following specifications camera with the ability to independently set aperture and ...
1
vote
4answers
758 views

How does the image form during a long exposure?

I was checking out the working principle behind a camera recently. I was amazed after learning how you can use slow shutter speed settings to take shots like this: So, if I set the shutter speed to ...
11
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4answers
2k views

How to choose a good smartphone if the top priority of the user is photography?

At the current rate by which technology is improving, I believe that mobile photography is not far behind their DSLR counterparts, generally speaking. However, for amateurs like me, it is quite ...
-3
votes
1answer
139 views

Which lens can be good for a Canon SX170 to make YouTube videos? [closed]

I have a Canon SX170 (I believe) and I would like to know where I could get a good lens that can fit my camera. I do YouTube videos and I'm looking for a good video lens for this purpose.
6
votes
4answers
1k views

Why are the color spaces we have access to incomplete?

The question, then: If all colors are combinations of red, green and blue, and my monitor's pixels use all three, why is its color space limited to so small a portion of the actual complete color ...
10
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3answers
2k views

How do SLR lenses connect to the body?

I recently bought my first SLR camera and lens for it and I have questions about how they interact. My lens attaches on, and I can use the focus on the lens itself, but if I use the auto-focus, does ...
2
votes
2answers
149 views

Why the photos captured from my mobile camera doesn't give a same results in same conditions?

Last night I was trying to create a time-lapse of the Orion constellation. Setting all the camera settings to manual (max ISO my mobile camera allows 1600 , shutter speed 1 sec), I was trying to ...
1
vote
1answer
74 views

Which is a better starter camera? [duplicate]

for someone just starting with the goal of doing family photos, weddingd, etc.which would be a better starter Nikon d3000 or Sony a350
3
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1answer
112 views

Which lens size will generate more detail for equivalent field-of-views in an image snapshot?

We are getting ready to purchase a 3 megapixel IP camera. It comes with either a 4mm or 6mm lens. We will only be using the camera for still image snapshots on a specified interval. Basically, it's an ...
0
votes
2answers
141 views

Why are only certain values used for the aperture?

Why are only certain aperture values (i.e. 1.4, 2.0, 2.8, 4, 5.6, 8, 11, 16, 22) used? Is there a reason we can't use anything other than those values - for example, 1.8 or 2.7?
6
votes
1answer
1k views

What is a low pass filter, and does a camera need to have one? [duplicate]

I have read on some camera reviews that they don't have a low pass filter and therefore they have sharper images. Since I am a novice, I wonder what is a low pass filter and is it good to have one on ...
1
vote
2answers
190 views

Why does this article say that a 1.5× crop factor sensor is 43% smaller than a 35mm film cell?

From http://www.digitalbirdphotography.com/2.3.html In the case of full-frame sensors, the pixels are spread out over a relatively large sensor: roughly 36mm by 24mm. This just happens to be ...
1
vote
1answer
57 views

Why only objects within a limited range of distances from a camera will be reproduced clearly?

From http://en.wikipedia.org/wiki/Camera Due to the optical properties of photographic lenses, only objects within a limited range of distances from the camera will be reproduced clearly. What are ...
2
votes
2answers
652 views

Panasonic Lumix FZ1000 - How does it compare to binocular magnification?

I know almost nothing about photography. But I am interested in learning. My dad just purchased a Panasonic Lumix FZ1000. I own a pair of Leica 10x50 binoculars. I asked him how the maximum zoom or ...
0
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2answers
433 views

How do shutter speed, ISO and aperture work together to control exposure?

When shooting in natural or ambient artificial light (without flash, basically), how do light, shutter speed, ISO and aperture work together to control exposure?
-1
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2answers
7k views

How to film a eclipse of the sun with a phone cam?

as you can read in the title I want to make a photo and a video from a solar eclipse. It should be very simple, fast and cheap, cause in 12 hours after I post this is the eclipse. I have only a Galaxy ...