Questions tagged [digital]

Digital photography clearly is the bulk of picture-taking today; this tag doesn't need to be on everything that is digital, but can be used when the question is specifically about the technology involved.

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47
votes
8answers
9k views

Do megapixels matter with modern sensor technology?

Are more megapixels good? Are more megapixels bad? Do more megapixels increase detail? Do they make my images sharper? On the other side, is there a point that is too much? Do megapixels cause ...
67
votes
7answers
18k views

How is ISO implemented in digital cameras?

If I change the ISO settings on my camera, obviously the gain of the system is increased, amplifying the signal from the sensor. What's not clear to me is where the amplification takes place. I see ...
62
votes
10answers
22k views

Are there reasons to use colour filters with digital cameras?

Digital photos can have colour filters applied after the fact by software, so are there any good reasons to use colour filters with a digital camera? As I understand it, the main reason for them ...
61
votes
6answers
6k views

How do I get started in Astrophotography?

I have a Canon 20D. I'd love to take some photos of the moon and stars. How do I get started? I've search the web and the information is sparse and cryptic. I'd like to know what equipment is the ...
44
votes
10answers
2k views

Should higher ISOs really be preferred (all other things being equal)?

My understanding of the ISO setting on digital cameras is that, unlike film-cameras, changing the ISO does not evoke any physical change in the camera. Rather, it simply tells the camera to multiply ...
6
votes
7answers
1k views

Should I upgrade my body or lens first?

I have an entry-level Nikon DSLR, and I cant decide if I should upgrade my camera body or upgrade from a AF-S DX Nikkor 18-200mm to whatever else might be recommended?
6
votes
2answers
1k views

Does high reflectiveness of digital sensor lead to poor lens performance?

I Googled film vs dslr and found an article from 2007 that said: Digital sensor has higher reflectiveness than film. The light bouncing back from sensor will cause flare and lead to poor optical ...
3
votes
2answers
12k views

Canon 75-300mm f4-5.6 USM or 55-250mm f4-5.6 IS lens?

I am getting a deal on a Canon T3 cam with 18-55mm kit lens and I have choice of one extra lens: 75-300mm f4-5.6 and 55-250mm f4-5.6. I generally like to shoot street, abstract and nature photos and I'...
49
votes
5answers
11k views

What's the difference between CCD and CMOS image sensors?

I keep reading articles about CCD vs CMOS image sensors. What is the difference between these two types? What exactly do these sensors do in terms of photography? Is a CCD-based camera going to be ...
17
votes
13answers
4k views

What is a good two lens “starter kit”?

A friend of mine is buying his first DSLR. He's chosen an entry-level Canon model, and wants to know which lens he should go for. My advice is to go for a good 70mm prime and an 18-200mm. The former ...
74
votes
23answers
7k views

What kind of photography is still better done with film cameras?

Are there any kind of photography left today which digital cameras are still in the disadvantage to film cameras?
16
votes
6answers
5k views

Why are blown highlights particularly bad in digital photography?

I've heard that digital sensors are less "forgiving" of blown highlights than film. Why is this? There's something called "characteristic curves". How does this relate, in film and in digital? Can ...
2
votes
3answers
5k views

What is the difference between Digital Blending & HDR technique

I have come across these techniques recently but can't see the point of doing one with a software and another manually with a photoshop tool. Basically what we are achieving is "expected" exposure for ...
31
votes
4answers
7k views

Why is the blue channel the noisiest?

It is widely observed that the blue channel in digital cameras is the noisiest. I've certainly noticed that with my camera. Why is this? Is it an artifact of some particular technology (e.g. Bayer ...
10
votes
5answers
1k views

What *exactly* is white balance?

When setting a white balance configuration, we adjust the temperature and green-magenta shift to a wavelength-intensity distribution of light that correlates most closely with the actual distribution ...
9
votes
7answers
10k views

Why do bright red flowers end up without details?

With our DSLR, indoor flowers come out detailed. Outdoor violet and blue flowers are detailed, too. But outdoor bright red flowers give us problems. They come out as a single flat detail-less spot. ...
5
votes
1answer
2k views

what's the relation between sensor size and image quality (noise, dynamic range)?

I'm reading this description on sensor size: Digital compact cameras have substantially smaller sensors offering a similar number of pixels. As a consequence, the pixels are much smaller, which ...
18
votes
3answers
2k views

What is the Orton Effect and how can I apply it to digital photographs?

I have heard of a photographic effect known as the 'Orton Effect'. Can anyone tell me what the effect is, what its history is and how I would create it in both film and on my digital SLR?
21
votes
3answers
1k views

Is it possible to do infrared photography with digital cameras?

I remember taking infrared pictures with a simple filter and black and white film. How can I do something like this with digital cameras? Or is this even possible?
18
votes
3answers
2k views

Why don't mainstream sensors use CYM filters instead of RGB?

From what I understand most digital cameras have a sensor where each pixel-sensor has three sub-sensors, each one with an R,G and B filter. RGB is obviously the more fundamental colour model since it ...
5
votes
3answers
1k views

Dust on Sensor After Many Cleanings DSLR

I know there have been a lot of posts on this topic, but I haven't found exactly what I am looking for. I noticed some dust spots on my sensor for my D750 after I took a picture with some sky in it ...
13
votes
3answers
1k views

How to start the basics of photography, which is the best entry level SLR camera? [closed]

Am an Painting Artist, I would like to start photography. But I don't know the basics of photography, and I need to purchase a good entry level SLR Camera. So Please help me to findout a good beginner ...
26
votes
5answers
22k views

Why and how do “bigger pixels” make a better picture?

This is going off of today's iPhone 5S announcement, when Phil Schiller said that "bigger pixels" is the key to a better picture. What does this mean? Is it true or just a marketing ploy?
31
votes
1answer
4k views

Why does every digital camera save photos in a directory called DCIM?

It seems like every digital camera that I have ever used creates a folder called DCIM on its removable storage to save photographs into. Can anyone tell me what this name (DCIM) stands for (if ...
6
votes
2answers
91k views

What is the equivalent resolution of a 35mm film [duplicate]

Possible Duplicate: What megapixel value is equivalent to which ISO film? Is it true that '80s 35mm photofilm had quality corresponding to 24 megapixels? I know this is a little bit like ...
11
votes
5answers
883 views

Where to start with photography?

I am new to photography, and need a little advice. I currently have a Samsung L83t. To get rolling, where do I go from here? Does the camera matter? Is this camera enough to start with?
7
votes
3answers
12k views

Why don't digital cameras shoot video at full sensor resolution, or do continuous drive at video framerates?

Why do high resolution cameras shoot stills at high resolutions, but only typically shoot video at 1080p which is about 2 megapixels? For example I have a Sony-NEX 6 which can shoot stills at 16 ...
4
votes
2answers
278 views

Is the Preview file always the photo taken by the camera?

When I take a photo with a digital camera (I own many*), I can preview it with the ▶︎ button. However, sometimes, cameras will displays a Preview photo that seems of a different quality than the ...
3
votes
4answers
43k views

Should I buy a Canon 55-250mm lens or 70-300mm for my Rebel T3i? [closed]

Should I buy a Canon 55-250mm lens or 70-300mm for my Rebel T3i? I have the basic 18-55mm lens that came with my camera but I need a next step up that's not too expensive. What are the most common ...
12
votes
12answers
2k views

Which DSLR brand should I pick as a beginning photographer?

I'm planning on starting photography as a hobby and I will be purchasing a DSLR very soon. Many of my friends have upgraded to DSLRs from P&Ss nowadays, but they all use different brands. Most ...
32
votes
4answers
5k views

Why can't the ISO level on most digital cameras be set below 80?

Why is it that the ISO level on most digital cameras doesn't seem to go lower than ISO 80? I understand (vaguely) that the sensors adjust the gain in order to achieve the equivalent of a high ISO ...
11
votes
3answers
2k views

What are the best resources for Indoor Product Photography?

I would like to know if there any good online resources for indoor product photography ? Preferably with a Table Top setup. Im looking for commercial grade product photography tutorials/resources. ...
3
votes
4answers
395 views

Where lays the border between correcting photo and creating a new one using PC?

There are two physical different steps on creating the photo: Actual shooting (including preparing to shooting) Post processing on PC (all what starts after downloading the photo to PC) On the ...
1
vote
5answers
2k views

What is “correct” exposure?

Photography has been my hobby for far too many decades — first on film, and now digital (for about seven years). I recently had occasion to use exposure bracketing seriously for the first time, when I ...
3
votes
4answers
4k views

Is optical image stabilization a necessary feature for any lens?

I am looking to buy a decent telephoto lens for my Nikon D3100. A 55-200mm Nikon lens costs almost Rs. 9000 ($144.67) and a Tamron 70-300mm lens costs almost $130 . The problem is that these lenses ...
2
votes
3answers
133k views

What is the difference between an SLR and a DSLR?

What are the differences between SLRs and DSLRs? (I know that DSLRs are Digital SLRs but are there any actual differences?) Also, what are the advantages/disadvantages of both?
1
vote
2answers
435 views

How can I cancel aperture resetting between subsequent image shots of a timelapse?

When shooting timelapses, small deviations of aperture position between shots can cause an image to flicker. The most obvious way is buy a lens that doesn't reset aperture on every shot you take. What ...
22
votes
4answers
4k views

What are good advanced books on the physics and science of photography?

I am looking for books about the physics of DSLR, including modern photography optics and sensor electronics. If I already have some books on optics and electronics, I have found fairly hard to find ...
25
votes
4answers
2k views

Is the Zone System useful with a DSLR?

The Zone System was originally used with B&W film photography. With colour digital photography, though, couldn't you get much the same results by keeping an eye on the histogram? I think I might ...
17
votes
3answers
26k views

Are digital sensors sensitive to UV?

Is there any way, shape, or form that ultraviolet light is recorded by a digital sensor? Ideally, this question is related strictly to the sensor, without even a glass lens in between which could cut ...
19
votes
4answers
33k views

Can a laser pointer damage the sensor in a digital camera?

I once experimented with standing in a dark room and directing a laser pointer towards my digital camera with a long shutter speed while moving the two about. I made a few images that way; one was ...
13
votes
5answers
5k views

How do I ensure good color reproduction when photographing paintings with a mid-level DSLR?

I'm a casual photographer with an APS-C camera (Pentax K-5) and a set of proper lenses. Someone asked me if I could photograph his oil paintings for a catalog. It's a low priority job to him, he just ...
5
votes
1answer
549 views

What do all the settings do in Lightroom?

What do all the do all the develop settings mean in Lightroom? For example, what does the Fill light setting do, and how does this differ from the Brightness setting? I can of course just play ...
8
votes
2answers
3k views

Can I achieve synthetic bokeh?

In order to have a good separation of the subject from the background you usually use fast lens with high aperture and so on. Can this, however, be achieved purely digitally?
6
votes
2answers
1k views

Why does the picture on my camera's rear LCD screen look fine right when I take the shutter, but then change?

I have a point and shoot camera that has a very nice zoom, and has the usual image stabilization etc. When I press the button to take a picture at, say, a concert (low light, moving people, pretty ...
2
votes
2answers
1k views

Sharp photo taken, but blurry in viewfinder (Nikon D5200)? [duplicate]

I'm using a Nikon D5200. Until recently, the image in the viewfinder was clear after focusing. I was able differentiate the blurry part and clear part. But for the past few days I've noticed that ...
21
votes
6answers
30k views

Are there any free but comparable alternatives to Lightroom? [closed]

Does anyone have any recommendations for free software that provides the key features of Lightroom in one package? The main things I am looking for are: RAW photo editing Library management Multiple ...
15
votes
4answers
4k views

Why do photos look best without any sharpening?

Maybe it's a subjective question, but most of the time my photos look best when I leave the Sharpening slider of Lightroom in a value close or equal to zero. Which are the benefits of digital ...
14
votes
3answers
975 views

How does photography for digital display only differ?

I only want to capture images with the intent of displaying them on a digital screen. I do not want to print the images, ever. Do any specific considerations need to be made upon capturing the image ...
19
votes
6answers
3k views

Does the number of shots differ dramatically between an amateur and a pro?

Recently I went on a trip and took around 400 shots and I thought they are all great, and unfortunately most of them went into trash and approximately 30 pictures considered as a top-notch shots. The ...