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Image quality describes how well a photograph matches a perceived technical ideal.

learn more… | top users | synonyms (1)

4
votes
4answers
1k views

What post-processing tricks can be used to improve the quality of photos taken with the on-camera flash?

I know that the on-camera flash tends to produce poor images in general (the subjects are washed out, and the light from the flash isn't very powerful). But... sometimes there's no other choice but ...
3
votes
3answers
345 views

How can I improve these photos of porcelain tiles?

We are opening a new shopping website for bone china products. I was given some photos of porcelain tiles but they look much worse than they are in real. I wonder if there are any basic techniques ...
2
votes
1answer
548 views

Does reducing JPG resolution decrease, increase, or have no effect on image quality?

I'm getting ready to download a bunch of images from microstock photo agency Dreamstime. I'll eventually want most of the images in the 400x300 pixel range for my website when I'm done working with ...
8
votes
2answers
3k views

Pentax K-5: Is it worth using the Premium JPEG quality setting?

Similar: How do I choose which resolution (megapixel) and compression (normal, fine, superfine) to shoot in? The Pentax K-5 has a JPEG quality setting called "Premium", denoted by four stars, which ...
2
votes
1answer
163 views

Digital Photo Board Presentation

I hope someone can help me on this. I need to show 80 photos on a single presentation. The way it used to be done is 80 4x6 photos were printed out and placed into a large frame. This year I would ...
2
votes
3answers
343 views

How many megapixels are needed on a smartphone to take above quality photos?

Just regular above quality photos for Facebook and normal things.
-1
votes
2answers
3k views

What's the max size a photo can be enlarged while preserving the same image quality? [duplicate]

Possible Duplicate: Is it possible to increase the pixel density of an image? Is there a general formula for image size vs. print size? Can one of the many photo editors max a photo ...
0
votes
1answer
133 views

If shoot pictures in 10.0 mode or 12.0 what is quality?

If my camera is shooting in 10.0 or 12.0...what will my megapixels be? I am a beginner and I know I need them to be at least 1600x1200 for my purpose.
2
votes
2answers
147 views

How does a glare arise in images?

I know am sounding dumb but i have not been able to find a correct definition of glare What are the reasons it props up into images For example am taking a photograph of a fruit in diffuse light : ...
5
votes
3answers
2k views

Is there photo analysis software which will pre-sort images by identifying potential technical problems?

I recently went on vacation and took close to 1,000 photographs. As usual there are some good ones, bad ones, blurry ones, etc. In order to expedite post-processing, I was wondering if there is any ...
1
vote
2answers
580 views

How can I improve the sharpness of my pictures? [duplicate]

Possible Duplicate: How I could take crisp sharp shots without expensive lens? I have software to correct sharpness, the one I use the most in Linux is darktable. But post-processing never ...
10
votes
6answers
623 views

What can I do to improve my composition on rejected food photos?

I have been working on improving my food photography skills to raise the overall look of my blog. I am shooting with a Sony A100 often a 50mm in natural light. I think I am doing pretty well so far ...
9
votes
4answers
626 views

What is the meaning of these Photodune reasons for rejection?

I wanted some advice, I am new to photography, I posted an image on Photodune for sale and it was rejected because of: Element or framing composition Noise, exposure, lighting or saturation ...
2
votes
1answer
458 views

Image being corrupted in DSLR [duplicate]

Possible Duplicate: Why do my images get distorted on my Nikon DSLR? I have been shooting with my D90 for quite sometime and I have just encountered the following problem. What could have ...
2
votes
1answer
8k views

Image Quality of Canon 18-135 IS compared to 28-135 IS USM?

I have the Canon 28-135 IS USM lens and I am pondering replacing it with the newer 18-135. I know I'll be giving up the USM and FTM focus and gaining 10mm on the wide end (replacing my old kit ...
17
votes
6answers
6k views

What are jpeg artifacts and what can be done about them?

I know JPEG is a "lossy" compression algorithm that discards information in order to save space. What is the visual impact of this? I've heard of "JPEG artifacts". What do these look like? Are there ...
0
votes
1answer
420 views

How does the megapixel-count and the aperture size affect the quality of the image from a given lens?

I have read that some lenses don't "support" high resolutions, so, for example, for some lenses (e.g. Nikkor 16-85 VR ), it's better to shoot at 9MP, instead of shooting at 16MP. Is this the case ...
1
vote
1answer
417 views

Export options for printing with Aperture 3

I am about to get my pictures published in a magazine. I am going send the pictures to the publisher, thus not printing them myself. Therefore I am curious about how to export the pictures ...
16
votes
1answer
747 views

Will I lose image quality by adjusting white balance in post processing?

I understand that if I shoot in RAW, post processing software like Lightroom is capable of adjusting colour temperature and tint to my desire. Will I lose any image quality in process? Or is it as ...
3
votes
2answers
1k views

If I'm happy with the speed, do I really need a faster class 10 or 30MB/s card for my DSLR?

My camera came with 4GB class 10, 30 MB/sec card. I wanted to upgrade to high capacity memory card but I was skeptical, a lower speed card such as class 10, 20MB/sec will cripple my camera when I use ...
4
votes
1answer
884 views

Why does my Finepix S2950 not show the image quality I expect?

I am a little confused as to why my Finepix S2950 takes photos like it does. I seem to be able to take great Macro Shots, but not landscapes. I have noticed that if I zoom into a picture enough I can ...
1
vote
0answers
178 views

Where can I get good criticism for my photos? [duplicate]

Possible Duplicate: Where to get community-based feedback on my photos online? How do I give someone a critique of their photograph? So one way to learn something and to be good at it is to ...
11
votes
4answers
5k views

Do digital cameras lose picture quality over time?

For some reasons when I look at my first pictures from my camera (DSLR), they look stunning. I know it could be just psychological. Another friend told me that her camera was really good when she ...
3
votes
2answers
444 views

Are there objective tests showing the the impact of a lens hood on image quality where there is no obvious flare?

I am familiar with the function of a lens hood, and I can understand that they could help to improve the contrast of pictures. However, I'm not convinced whether a lens hood does make all that much of ...
9
votes
4answers
832 views

Is it possible for a lens to produce too much contrast?

I came across a complaint that a certain lens produces too much contrast. The lens was described as rendering "cartoonish" contrast when shooting a portrait with diffused light from a window, where ...
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 ...
5
votes
4answers
2k views

Is an entry-level DSLR good enough for portrait photography?

I'm looking into starting a small at home portrait photography business mostly as a hobby for now, and I'm wondering if the camera I have now (Nikon D3000) is good enough for portrait photography. ...
4
votes
1answer
164 views

What makes a good sample image for ISO comparison?

To be more specific this image is always used by Digital Photography School for ISO comparison. What are those features that make this image suitable for ISO comparison.
7
votes
7answers
561 views

Is technical perfection necessary for an artistically awe-inspiring photograph?

What is your feeling in front of an awe-inspiring photograph (with really good composition, light, color, depth of field, etc.) but with unsatisfactory technical qualities (for example: JPEG ...
8
votes
2answers
2k views

Does rotating a photo count as a destructive editing?

I usually rotate all my jpg photos (using Windows Photo Viewer) after removing them from my camera's card. Is this correct? Am I losing quality for rotating them? Should I just leave them as they are ...
6
votes
3answers
214 views

What is the influence of the camera on the performance of a lens?

Shouldn't a lens be good or bad independently of the camera it is used with? After seeing these reviews at DxOMark I got confused. By changing the camera where the lenses are tested I get different ...
28
votes
6answers
3k 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 ...
1
vote
1answer
3k views

What causes outdoor photos to turn out bright white when taken with a digital camera?

I set my Canon Powershot A460 to automatic mode and took photographs outdoors. When I see the to-be-photographed area on the LCD, it appears normal; but when I take a picture, the photo turns out ...
6
votes
3answers
3k views

What is the difference between image size and image quality?

I have a Casio EX-S12. It has a setting for image size, but also a separate setting for what it calls "image quality". There are three image quality values: "Fine", "Normal", and "Economy". The Casio ...
5
votes
1answer
465 views

Scratches on negatives - me or them?

I've recently dug out my old SLR camera again. I've just got the prints and scans back from a reputable high-street company and I'm not very impressed with the results. For example: There's a big ...
5
votes
4answers
1k views

What tool produces better quality jpeg: Lightroom or Imagemagick?

I'm using Lightroom for photo workflow. At the end of it, I would like to have the best JPEG I can get, basically two options to choose from: - export from Lightroom to JPEG, using the 100% Lightroom ...
4
votes
5answers
1k views

Why does the quality of my pictures lower the more I zoom in?

I have a Canon 60D with the 18-200mm kit Lens. I was at the beach not too long ago, I took some pics of my son in the sand, from a very close distance and they came out great. Picture quality was top ...
9
votes
3answers
311 views

What are good test shots for finding out the capabilities of a camera?

I have a range of cameras from a (frankly awful) kiddie camera to a hybrid (Olympus Pen) and I want to take some pictures to test their (comparative) limitations. So I want to take the same photos ...
15
votes
5answers
944 views

How do I find the aperture that produces the highest-quality images for a given lens?

I'm not talking about large aperture (f/1.8, f/2.8...), rather, about small apertures (f/18, f/20, f/23...). I read somewhere (actually I think it was on this site, but I don't exactly remember which ...
11
votes
6answers
2k views

Does stacking more lens filters decrease overall image quality?

As stated by @t3mujin in another thread's comments: Stacking filters will decrease image quality, as it's another piece of glass light has to go through before reaching the sensor. I was ...
7
votes
4answers
1k views

How to take sharp photos while using maximum optical zoom?

When I shoot with high zoom (above 3X on my point-and-shoot camera), the sharpness of the picture seems to come down. Is it a feature of all cameras or is it due to higher sensitivity to camera shakes ...
7
votes
2answers
2k views

Can a video camera produce a high quality still photo shoot?

I have a high-end digital video camera able to output a higher number of megapixels than my digital photo camera. This is true only when using the camera to take stills. Is there anything that's going ...
25
votes
3answers
3k views

How can I test a new lens to make sure it is operating correctly?

How can I test a new lens to make sure it is operating correctly? I found two similar questions with answers specific to things such as sharpness and focus, but I want to cover any and all possible ...
7
votes
4answers
1k views

Does noise in images depend upon “Megapixels” or “ISO”?

I have a question about image quality. Does noise in an image is depends upon "Megapixels" or on "ISO"?
42
votes
4answers
35k views

What is moiré? How can we avoid it?

What is the image defect called "moiré"? What causes it, and how can we avoid or reduce it? Is it related to "false color"?
5
votes
1answer
500 views

How can I improve the results of my proprietary RAW processing pipeline?

I am doing some experiment with Raw image processing using two post processing tools: Adobe PhotoShop (PS) CS5 Proprietary Image processing pipeline code. Data Capture: I captured some raw ...
4
votes
4answers
1k views

Why is Nextgen / wordpress is reducing the quality of my photographs?

I have been researching this night and day for months now. Photos viewed on my website look terrible compared to the same file viewed with other mediums. I have contacted many website support ...
7
votes
4answers
819 views

What should be considered for employee photos to put on company's website?

I work in the entertainment industry and am looking to produce friendly looking images of our employees (sales managers, customer support people, and so on) to put on our company's website. What ...
2
votes
1answer
405 views

How can I get objective, numerical Image Quality measurements for my photos?

I intend to take some raw images using my Canon-450D, and process them offline using some tool. Then I need to get some objective(numerical) metrics for those images like Image Noise, Image ...
3
votes
3answers
618 views

What's a good lens for my Canon G7?

I'm not a professional photographer, but I use my camera on a regular basis to photograph my familiy and activities I attend. I own a Canon G7 (older version of the G11) and instead of upgrading to a ...