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18
votes
4answers
2k views

Does the dpi number reported by camera in JPG have any meaning?

I have two cameras, a 6mpix Panasonic FZ8, and 14mpix Canon A2200. When I compare shots from two cameras, one of differences I notice is dpi number that camera reports in JPG info: FZ8 reports ...
18
votes
4answers
2k views

Does it give higher quality to shoot in low-res mode in-camera, or to downsize high-res photos later?

Suppose you want to store your photos at some lower resolution, let's say about ~1 MB large. You own a camera able to make photos at 5 MPix and more. And, you want to have the maximum quality at the ...
12
votes
5answers
3k views

What is a normal lens?

I've heard people call 50mm lenses "normal lenses". For a lens to be considered normal, does it have to be exactly 50mm or is there some leeway? Does the normal focal length depend on crop factor of ...
14
votes
3answers
505 views

What is Chromatic Aberration?

What is Chromatic Aberration? Is it a physical part of the lens, or just an optical illusion?
11
votes
3answers
10k views

Why prefer the 18-55mm and 55-250mm lenses vs 18-200mm?

There seems to be a preference for to have the 18 mm - 55 mm 55 mm - 250 mm lenses, but no mention of why they're better than a single 18-200mm. Could someone please explain why the two separate ...
30
votes
14answers
23k views

How do Micro 4/3s cameras compare with DSLR cameras?

What are the major (and perhaps more subtle) differences between the newer Micro 4/3s format in comparison to the well-established DSLR cameras? What are the pros and cons of the Micro 4/3s format, ...
39
votes
8answers
6k views

Why is the 50mm prime lens the most standard?

Seems that most photographers choose the 50mm as their prime lens (at least from what I've read). I'm looking at getting a prime lens for my Nikon D3000 and the cost difference between the 35mm 1.8 ...
33
votes
5answers
4k views

In which situations should I use my circular polarizing filter?

I received a circular polarizing filter as a gift, but I have a hard time determining when I should be using it. I've done river shots with some success, but other than that, it doesn't seem to do ...
15
votes
8answers
3k views

How to start learning photography?

How to start learning photography?
9
votes
6answers
4k views

Technically, why is the out of focus area blurred more when using a bigger aperture?

I'm wondering, technically, why and how does the out of focus areas blur more when using a bigger aperture. I think it'd help a lot if I presented a problem that's been driving me nuts for a long ...
20
votes
4answers
3k views

What is focal length and how does it affect my photos?

What is focal-length? Are focal-length and zoom synonymous? How does the focal length of a photo affect it?
22
votes
9answers
3k views

How do I choose a polarizer?

It was suggested that I should get myself a polarizer filter to get over my reflection problem. ( How to avoid reflection when taking a picture of a ceramic object with a shiny glaze? ) I found out ...
13
votes
3answers
1k views

What is HDR photography?

What is HDR photography, and when might it be useful?
19
votes
3answers
1k views

Do smaller apertures provide more depth of field past the diffraction limit, even if peak sharpness suffers?

In Understanding Exposure (3rd edition, on page 48), Bryan Peterson has what might be called a rant against modern on-line conventional wisdom about diffraction limits. Answers on this web site are ...
9
votes
3answers
913 views

What features should one look for when selecting a flash?

I have been thinking of getting a flash to improve my low light photography (particularly indoors). However, there seem to be a number of different models available at similar price points (budget of ...
7
votes
8answers
1k views

What macro techniques offer an alternative to expensive optics?

I was wondering what are the alternative macro techniques people use instead of buying expensive macro optics. I know about single lens reverse macro technique; what other alternative techniques allow ...
11
votes
5answers
2k views

How does taking lower-resolution pictures with a higher-resolution sensor affect image quality?

Does taking a picture with 8 megapixel resolution with my Canon IXUS with a 1/2.3" sensor and 12M max resolution provides the same or worse image quality (particular, noise) as if the picture was ...
49
votes
20answers
7k views

Where to get community-based feedback on my photos online?

Where can I post my photos and get reviews, comments, and critiques from the community, in order to learn to become a better photographer? Here is a list of places to get feedback. Please use answer ...
83
votes
15answers
5k views

How can I better organise and file my photos?

At present I meticulously add metadata as EXIF tags to my photos using Microsoft Pro Photo Tools, which also lets me place them accurately on a map. The thing is I tend to leave photos in a folder ...
58
votes
4answers
46k views

What is Rembrandt lighting, and when do I use It?

I often hear studio photographers talk about 'Rembrandt Lighting' when they're setting up lights and doing studio portrait photography. What is Rembrandt Lighting, and when do I use it?
24
votes
4answers
3k views

What tips and advice do you have for photographing the Aurora Borealis?

A friend has been kind enough to lend me a DSLR for a few months. It's my first foray into DSLR photography, or indeed any kind of photography beyond simply aiming my Canon IXUS at something and ...
32
votes
8answers
6k views

Can I publish photos taken in public legally?

Who actually owns a photo that is taken in a public place?
28
votes
5answers
56k views

How many actuations are “too many actuations”?

When looking at used camera bodies, a question that comes up a lot, is "how many shutter actuations, or clicks, does it have?" What I am wondering is, how many is too many. In other words, is there ...
26
votes
11answers
2k views

What is the best way to clean the sensor on a digital SLR?

I've got a couple of spots of dust on the sensor of my Canon 20D - a rocket blower isn't shifting them, and I'm ridiculously scared of some of the more direct methods for cleaning sensors -- what ...
29
votes
3answers
1k views

What should one consider when choosing a style of tripod head?

What should one consider when choosing a style of tripod head? There are ball heads, 3-way pan/tilt heads, geared heads, even gimbal heads. I'm not asking so much about brands, but styles... how ...
21
votes
4answers
6k views

How do you use a gray card?

There are already two questions on how to make a gray card, but unfortunately my ignorance goes deeper than that. How do you use a gray card?
18
votes
10answers
4k views

What is the 18% gray tone, and how do I make a 18% gray card in Photoshop?

I have heard about 18% gray tone — what is it really, and why 18% (and not 20% or some other value), and how can I make it in Photoshop?
27
votes
8answers
3k views

What is the advantage to back-button autofocus?

I've heard some advanced photographers talk about using back-button autofocus. As I understand it, this involves changing one of the camera's custom setting to engage the AF when a button on the rear ...
36
votes
4answers
2k views

Should I get DX for my APS-C camera, or FX lenses in case I upgrade to full-frame in the future?

I recently bought a Nikon D90 camera body, which has a "DX" APS-C-sized sensor.. Within the same budget, should I go with DX lenses or should I get full frame lenses in case I upgrade to a full frame ...
21
votes
5answers
3k views

What is exposure compensation?

What does exposure compensation do? If I take a photo with a given shutter speed, aperature, and ISO, and then take the same shot with +1EV or -1EV, what is actually happening? Is this just a gain ...
14
votes
2answers
13k views

What does DPI mean?

What does DPI mean and how does it affect images displayed on screen versus printed?
20
votes
5answers
1k views

What exactly is flash sync speed, and should it be a factor in a buying decision?

What exactly is flash sync speed and should it be a factor in a buying decision?
13
votes
7answers
2k views

What are my best options for a tripod for up to $100?

I'm looking to buy a tripod + head (for my Canon 40D), but am not sure if I want to spend more than $100 on it. So can you suggest options for best tripods for $100 or less? Or, is it important to ...
10
votes
4answers
1k views

How to choose the correct exposure?

I have a Canon 60D that I use for my primary hobby that is photography, but sometimes the pictures that I took are with the incorrect exposure like this: So I want to know how I can choose the ...
41
votes
15answers
3k views

Can anyone suggest books/resources on the artistic side of photography?

I am a relatively new photographer. I have no problem understanding the technical side of photography (I am an engineer by trade), but I do struggle with the more 'artistic' side of photography ...
30
votes
6answers
14k views

How do I capture the milky way?

Can the milky way actually be photographed like this? I know the image is manipulated, and is probably a composite, but how do you capture such contrast in the milky way? Is an equitorially mounted ...
42
votes
32answers
16k views

What are the best sites to share photo galleries with friends?

Which sites do you use for sharing photos with family and friends?
47
votes
4answers
4k views

What is Ansel Adams' “Zone System”?

I've heard much of Ansel Adams' Zone system, but I've never quite understood it. What is it, how and where is it used, and is it still useful with modern (digital) cameras? Thanks!
38
votes
13answers
4k views

What are the must-have filters for a new photographer?

What filters are good and why?
37
votes
4answers
13k views

What apertures are required to enable autofocus, including cross-type or high-precision focusing, on Canon DSLR cameras?

This is a follow-up to Why does Canon and Nikon limit or disable autofocus beyond certain f-numbers? I'm doing this to separate the AF aperture requirements from the linked question above. My goal ...
30
votes
4answers
7k views

What software can show my most frequently used focal length?

Many people recommend a focal length of 35mm, 50mm, and sometimes even 85mm and upwards for those interested in purchasing a prime lens. I, however, would like to figure out what focal length(s) I use ...
26
votes
12answers
4k views

How do you make the most stunning sunrise and sunset photos?

I've been lucky on a few occasions, but I often struggle with capturing awesome sunsets. What can I do to remove the element of luck and get more consistent results? Additionally, is it possible to ...
24
votes
3answers
17k views

What is the “Rule of 600” in astrophotography?

This question mentions the "Rule of 600" for avoiding star-trails in astrophotography. What is this rule? How was it derived? How should it be applied?
40
votes
6answers
13k views

Why do light sources appear as stars sometimes?

See for example this photo: From my experience, the longer the exposure the stronger can this effect be observed. Is this correct? Are there any other factors that influence the creation of these ...
34
votes
10answers
1k views

What attributes should I look for when buying batteries for a flash?

I want to buy some more rechargable batteries (AAs) for my flashes. I suppose I mainly care about: - Quick recycling of the flash - Hold their charge when not in use Although bonuses for: - Long ...
22
votes
16answers
1k views

What method is best to take backups of your digital photos?

What method do you recommend to take secure backups of your photos? I have used Carbonite.com for my family photos and videos - it is an online backup - just select folders to backup and the software ...
27
votes
15answers
6k views

What options do I have for GPS/Geotagging with a digital SLR?

I would like to track GPS points while I am photographing with my Canon EOS (5D) camera. What option do I have track them and what do you recommend?
39
votes
2answers
19k views

What is tone mapping? How does it relate to HDR?

Whenever I read / hear about HDR (High Dynamic Range) photography, someone usually says something along the lines of "Actually, you're talking about tone mapping, not HDR." Please can someone ...
21
votes
3answers
7k views

What is Universal White Balance (UniWB)?

How and in what kind of situations should it be used?
18
votes
4answers
9k views

How do camera body motors compare to in-lens motors for focusing?

What is the difference between using a motor on the camera body and the motor built into lenses? Aside from how both compare in terms of speed, what differences would I notice if I use a body with a ...

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