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

learn more… | top users | synonyms (1)

49
votes
4answers
4k views

What exactly determines depth of field?

There are several questions here about the definition of depth of field, about focal length, and about subject distance. And of course there's the basic how does aperture affect my photographs. And ...
0
votes
0answers
83 views

How to calculate the zoom power (X factor) for a lens? [duplicate]

Possible Duplicate: How do I convert lens mm to optical zoom times? How can I obtain the "X factor" for a lens? I thought that to get the "X factor" I had to divide the largest focal ...
4
votes
4answers
424 views

Who tells my camera which apertures my lens has

When I mount one of my lenses on my camera, my camera knows which apertures the lens has. So I ask my self: Why does my camera know that for example lens XY has a max. aperture of 2.8 and a min. ...
2
votes
2answers
183 views

What would appear on polaroid film exposed without a lens?

I am trying to get a better understanding how lenses & focusing works. Let's say that I am standing in a completely dark room holding a unexposed polaroid film, and turn on a TV in the other ...
17
votes
4answers
938 views

What is ISO and how does it affect my photos

What is the ISO setting on my camera? What does it represent? What should I be aware of with regards to ISO when taking photographs
17
votes
3answers
2k views

What makes a camera an “SLR”?

My question, specifically: why is the Fujifilm HS 10 not an SLR?
4
votes
2answers
287 views

How to setup area of focus mode in Nikon D90?

I have a D90 and have tried to set it to area of focus single point, center point,normal. It is not going to this setting, when I look through the lens after setting it the area of focus is on the ...
24
votes
8answers
14k views

Can I leave the batteries in my camera?

I recently bought a Canon 1000d DSLR. I'm just an amateur and don't use my camera daily. I use it once or twice a week. Is it okay if I leave the batteries in the camera during this idle time?
1
vote
4answers
189 views

Photography: the technical side [duplicate]

I love photography. To be honest, I've never seriously taken even one photo, but I love it. Looking at other people's work on sites like 500px and other discussions on this site, it really makes me ...
20
votes
5answers
2k views

What is mirror lockup and what is its primary function?

My SLR is equipped with a mirror lockup function. What does it do, and when would I employ such a feature?
5
votes
3answers
668 views

How do I get started with off camera flash in the Canon ecosystem?

This is a very basic question, and I have looked through different resources including the Strobist Lighting 101 tutorial and a few books (Scott Kelby, Neil van Niekerk). Some of the limitations I ...
2
votes
2answers
231 views

What is zoom multiplication based on?

When a camera says that it has, for example, a 10x optical zoom, what exactly is that 10x based on? Is it the angle of view of the human eye, the focal length of the camera, or what?
11
votes
2answers
6k views

What is the meaning of W and T on a camera's zoom buttons?

On every conventional digital camera (excluding the models with detachable lenses), there are buttons to zoom in and out with W side and T side. When you press W, the lens zooms out. The lens zooms ...
20
votes
4answers
2k views

Why are there limitations to the upper limit of exposure time in digital cameras?

For example, my Canon 550D will only go as far as 30 sec (and then of course the bulb mode). For measuring exposure, I think all the camera needs is a timer, and I have no doubt they would have to do ...
1
vote
2answers
234 views

What does different focal length offer me?

I have a beginner photographer and I have spent a lot of time learning the basics (exposures, lenses, focal lengths, crop factor etc). It's all good except I'm not so sure when I need to buy lenses of ...
0
votes
1answer
1k views

Soft Backgrounds [duplicate]

Possible Duplicate: How can I get dramatic shallow DOF with a kit lens? I'm planning on taking Christmas cards with my dog and self in focus with the Christmas tree and lights blurred out ...
60
votes
12answers
10k views

What advantages does manual mode have over aperture priority mode?

I'm wondering what are the most compelling reasons to switch to manual mode on my DSLR. I mostly just use aperture priority mode so I have good control over the depth of field combined with an ...
3
votes
3answers
2k views

How does color depth differ from camera to camera?

Which is part of the camera that is responsible for color depth of the images?Is it the property of the image sensor or the image processor of camera? And why do it differ from cameras?How much effect ...
0
votes
3answers
123 views

Which is the first camera that introduced dial method to set values?

When was the first camera with dial(wheel) method to input settings introduced? Which model is it?What is the method that is used before this?
3
votes
3answers
157 views

How is shots per second of a camera is measured?

I was just curious to know what are settings used in testing the camera's shots per second?Especially the shutter speed. Whether its set to the camera's maximum capability or any standard shutter ...
3
votes
1answer
266 views

How is aperture handled when in live view mode?

When you are using the viewfinder, whatsoever the aperture value is, the lens will be in widest aperture until DOF-preview button pressed or half-shutter button.But what about the aperture value when ...
-6
votes
3answers
486 views

Is introduction of touch screen in DSLRs a boon? [closed]

With Canon introduced EOS 650d with touch screen, does it have an useful effect on photographers?Will this storm drive other manufacturers too or will it fade away just with this?Also is there any ...
2
votes
1answer
1k views

What are cameras that allow you to change the lens called? [closed]

recently my friend was talking about a specific type of camera, which can be used with or without the additional lenses. Can you please tell me what these camera type is called as?
4
votes
4answers
928 views

Is higher ISO noise evenly distributed, or does it affect colors differently?

It's obvious that higher ISO affects the photograph by adding noise or grains. But will that grain or noise be distributed equally over all parts of the photograph, or will it specifically affect ...
3
votes
1answer
258 views

Are scene modes, white balance, color tones, and similar just post-processing effects?

What happens when the following settings are changed: White balance Color tones Scene modes Are these parameters affect the way in which the photo is taken or they are just applied by processing ...
6
votes
2answers
4k views

How does a fly-by-wire focusing lens work?

I have learnt that fly-by-wire focusing is an electrical manual focusing system. But how does this focusing method work? How do you manually focus with fly-by-wire? What is the scope of this ...
-1
votes
1answer
579 views

Below which focal length are lenses considered to be wide angle?

Focal length is the only factor that decides whether a lens is described as being normal or wide angle. Below which focal length are lenses considered to be wide angle? Is this focal length the same ...
1
vote
3answers
2k views

How to mount a 58mm lens on Nikon D80?

I have a Nikon D80 50mm camera with a 52mm Haze filter. I would like to attach some 58mm lenses that I have but not sure which adapters I need. The 58mm lenses have male threads that would attach to ...
3
votes
1answer
1k views

Taking pictures with fixed/full focus camera

I have got a fixed focus, 5 MP camera with 3.3mm focal length (not sure what it means) on my phone. I want to know what's the best way to take pictures with since it's missing auto-focus feature. Is ...
7
votes
3answers
1k views

how the camera determines correct aperture and ISO in bulb mode?

Consider that the camera is in shutter priority and the exposure time is set to bulb mode. Now the camera doesn't know how long the shutter is going to be open in advance and so how does the camera ...
4
votes
2answers
2k views

Which mode should I use on my camera?

On the top of most cameras is a selector knob which will allow you to select different modes. These range depending on the camera, my camera (Nikon D5100) has several choices. I have been told ...
20
votes
5answers
1k views
11
votes
8answers
76k views

How does 18 megapixels compare to 12 megapixels? [duplicate]

I'm purchasing a digital camera & it says, "Effective pixels: Approx. 18.00 Megapixels". What is this compared to 12.00 megapixels?
5
votes
1answer
1k views

When is it really necessary to use AF assist light?

I find the AF assist light to be distracting at times when I'm trying to take a candid shot without disturbing the human subjects or taking pictures of pets (they hate getting the AF light in their ...
18
votes
3answers
1k views

Why does a 15-second exposure on my camera actually last 16 seconds?

I was doing a test and wanted the shutter to stay open for 15 seconds -- no problem, I have a 15-second exposure setting in my camera. It seemed to stay open for about an extra second, though, so I ...
5
votes
4answers
547 views

What types of digital cameras are out there?

Everything I come across while researching digital cameras for the most part falls into two categories: Point-and-Shoot and SLRs. Are there any other types of cameras, be it professional or consumer, ...
2
votes
3answers
18k views

How can I turn off the loud sound my D3100 produces when I take a photograph?

Nikon D3100 produces sound when I take the photograph. The sound is loud and attention grabbing. What is the term for this particular sound, and how can I turn it off?
4
votes
1answer
210 views

How can I syncronize simultaneous shots taken with two cameras?

How can I capture two simultaneous shots using two cameras and two cameramen? For example I want to capture one person throwing a frisbee while the other person is chasing it down. I'm not trying to ...
12
votes
4answers
6k views

What is the small +- wheel next to my view port for?

I had a scare last night when everything in my view port looked blurry on my brand new Canon 60D, even the digital display a red focus boxes. The images photos came out clear, the live view was ...
0
votes
0answers
89 views

Technically what happens that aperture affects Depth of field [duplicate]

Possible Duplicates: What exactly determines depth of field? Technically, why is the out of focus area blurred more when using a bigger aperture? It is obvious that the aperture affects ...
8
votes
4answers
2k views

What are the technical differences between using a DSLR viewfinder and live view?

The earlier question What are the advantages of using the optical viewfinder over live preview to take photos on a DSLR? asks for practical advantages of optical viewfinders. But what's the technical ...
1
vote
2answers
769 views

How to focus manually when you don't have a live view in the DSLR?

Nikon D3000 doesn't have a live view which means that the scene can't be seen on the LCD screen. So, how do you use the manual focus in such cases? Hit and trial, or is there a way out?
8
votes
6answers
8k views

How do I get the 'equivalent' focal length for a DSLR lens for my camera?

On my Nikon D3000, how do I figure the focal length equivalence? In other words, if I want a lens that is just like a 50mm lens on a 35mm film SLR, I need to multiply by a factor. What is the factor, ...
12
votes
4answers
355 views

What is it called when an object appears to be the same size with the eye and through the camera viewfinder?

I have a Canon 18-135 lens. I am looking into the camera viewfinder with my right eye and not through the viewfinder with my left. I start from 18mm and keep zooming in till I see a particular object ...
0
votes
3answers
11k views

In what way does shutter speed affect a photo?

Is there a rule like "the lower the speed the better quality?" I tried taking at different speeds but couldn't understand the difference.
12
votes
4answers
4k views

How can a lens like a 18-55mm have more than one focal length?

How can a lens have a range of focal lengths? Shouldn't it be a single number? Isn't focal length supposed to be fixed for a lens of a particular shape and geometry? What am I missing? How many ...
3
votes
2answers
312 views

What should a beginner look at in comparing two point & shoot cameras?

My interest in photography grew over the last few days, and I finally decided get into this thing. My goal is to become a Nature/Wildlife & Fashion photographer some day. Since I am total ...
7
votes
4answers
320 views

How do I start using a hotshoe flash?

I've just been given a Sigma EF-500 DG ST flash unit. I've not really had much experience using flash. How can I get started? Are there any good learning resources?
8
votes
4answers
7k views

What does 'how much zoom' mean?

I have Canon 18-135 and 70-300 zoom lenses. People ask me how much zoom my camera supports. What am I supposed to tell them? "135 ÷ 18 = 7.5" and "300 ÷ 70 = 4.2"?
43
votes
18answers
4k views

What are common beginner mistakes in photography?

What are common mistakes seen in images taken by beginning photographers? For example, a friend of mine pointed out that the horizon was not straight in one of my images, and now I see it ...