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quantifies how much detail an image can convey

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12
votes
3answers
763 views

How can a high resolution camera matter when the output is low resolution?

The question is inspired by this question showing these pictures. The accepted answer suggests that these pictures were taken by a 8x10 view camera, and the use of a 8x10 camera was confirmed in the ...
4
votes
3answers
280 views

Shooting images smaller than the sensor size

I have a d600 and I appreciate very much the high resolution I get (useful especially for landscapes), but for most other subjects I find 6000 x 4000 to be overkill, making post-processing ...
4
votes
5answers
13k views

How to reduce file size without losing quality or resolution?

I have 2,300+ pictures that I want to transfer to my phone but on their original size they take up a lot of space (6.44gb) I would like to trim is down to without sacrificing quality or resolution. I ...
0
votes
3answers
204 views

How can a 900X500px image have ~5400 DPI? [duplicate]

Possible Duplicate: Does the dpi number reported by camera in JPG have any meaning? I am investigating on the size and resolution of the photographs posted on the Internet. I have visited ...
6
votes
3answers
334 views

Is a low-resolution scan of B&W negatives expected from a drugstore?

Shoot a roll of ilford color process B&W. Take to Walgreens. Receive CD (and negatives). Import to Aperture, crop a bit, and ask for an 8x10. Get a warning that there's not enough pixels to make a ...
1
vote
4answers
209 views

Low light pixel aggregation

If a lower resolution end image was acceptable, wouldn't it be possible to halve the width and halve the height of a low-light image and take the sum of the light in each block of 2x2 pixels when ...
4
votes
1answer
883 views

Is it better to edit photos with a high pixel per inch monitor?

Title says it all Is it better to edit photos with a high pixel per inch (PPI) monitor or is a bigger monitor better? eg. My current monitor Panel Size: 23.6“ Wide Screen True Resolution: 1920X1080 ...
3
votes
3answers
237 views

In what way will affordable high density displays affect photography?

The last 6 months have been quite revolutionary for the display technology with the new iPad & Retina Macbook Pro and their 200+ ppi displays that double the typical pixel densities. I have seen ...
1
vote
3answers
236 views

Dots per inch calculation [duplicate]

Possible Duplicate: What does DPI mean? I have a hard time understanding the concept of dots per inch. I've looked the wikipedia article and I am still unsure. Say I have a 4"x6" photograph ...
7
votes
4answers
2k views

Why are two pictures that are the same dimensions/dpi such different file sizes?

I am working on a project where two my images must be AS SMALL AS POSSIBLE. I have scaled two images to the same dimensions/dpi and I've checked the color profile in Photoshop CS6 and they both look ...
3
votes
1answer
4k views

How large an image do I need to print a 32″ by 18″ poster at 300 DPI?

I need to have an image printed as a poster 32″ by 18″ (about 80x45 cm) at 300 DPI, but I am unsure of how big the file must be. Also, what file format is best?
4
votes
2answers
649 views

Are cropped images from a full-frame sensor equal quality to full APS-C images despite the lower resolution?

If I put a DX lens on a Nikon D700, it will reduce megapixels to 5.1. I understand that FX pixels are about 2.5 times larger than DX pixels. Would I be correct to assume that, therefore, my FX image ...
1
vote
5answers
1k views

How does optimizer software reduce file size without reducing resolution?

There are numerous applications for reducing filesize. Most of them reduce resolution (e.g. from 300dpi to 72dpi) or reduce height and width. I tried http://www.imageoptimizer.net/ Surprisingly, when ...
-1
votes
2answers
241 views

How to reduce the image resolution to increase ppi?

Having an photo of 4000x3000 resolution with 240ppi. Is it possible get a resolution of 400x300 resolution but with higher ppi?If possible how to do that?
3
votes
1answer
608 views

Lightroom Exporting for web optimum settings

When exporting a batch of photos in LR you get a variety of options. For photos that are going to be eventually printed I would think that the highest resolution and 300ppi would be a good starting ...
11
votes
8answers
880 views

Which software could I use for periodic bulk image resizing?

I have a very large collection of images in a bunch of nested folders. I would like to run some sort of process (on a regular basis) that will sync all the images to another place in a new smaller ...
-1
votes
1answer
127 views

Best Digital Scanning techniques - help

I want to scan a paper shown below. Actually I need the photo of the jets taking off, I dont need the entire newspaper. This is what I have - I have to do color scanning, I have a HP scanner which ...
0
votes
1answer
460 views

What does pixel count suggest? [duplicate]

Possible Duplicate: Do megapixels matter with modern sensor technology? Mobile phone manufactures now advertise their phones having camera with bigger megapixel count. Does it mean the ...
6
votes
3answers
1k views

Is there a photoshop plugin or any other piece of software that can do super resolution?

I want to combine multiple photographs of the same lanscape to increase the resolution of the final image. More details on the method here: http://en.wikipedia.org/wiki/Super-resolution What software ...
1
vote
3answers
1k views

Can I increase the resolution of a six-megapixel photo to print on a large canvas?

I took a photograph and the information tells me it is 3008x2000 and 2.2 MB. It's a darker image of two people and their reflections in a window. I'm trying to get it printed on a canvas by ...
2
votes
1answer
518 views

Resize and sharpen or sharpen and then resize?

Is there a logical reason why one is preferred over the other or it does not make any difference either way? Edit: I meant resize as in downsizing the image.
2
votes
3answers
188 views

DOF and picture quality

Is it possible to say that picture quality is better with small f number but on very small DOF, so this perfect quality degrades very quickly? So basically is there any reason to shoot with big ...
0
votes
1answer
862 views

What impact on image resolution does the aperture have?

What is the effects on depth of field, signal to noise ratio and image resolution when reducing the aperture?
0
votes
1answer
237 views

Image Quality of Shooting at 3MP then resizing to 1MP vs Shooting at 1MP [duplicate]

Possible Duplicate: Does it give higher quality to shoot in low-res mode in-camera, or to downsize high-res photos later? I want my final image to be stored at 1MP and I want it to be in ...
1
vote
1answer
1k views

Canon Powershot SD1400 IS stuck in 640x480 mode?

For some reason, every photograph I take on my PowerShot is saved at 640x480 despite the claims that the camera has a 14.1 megapixel resolution. I only have a 1gb SD card inside the camera, and am ...
1
vote
1answer
7k views

How can I maintain high resolution when converting RAW images to tiff or jpeg?

I use Photoshop CS4. I use it a lot, but I don't have any experience with RAW files. I need a 600dpi image that is about 11 inches high (to be printed on a huge banner). I shot the photo in RAW ...
11
votes
8answers
57k 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?
1
vote
1answer
168 views

What is the “Resolution” and how it's related to “Printing”

What do we mean by "Image Resolution" anyway and how it's related to printing on paper? Is resolution related to displaying the image on computer screens too? What is the meaning of "High ...
2
votes
1answer
507 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 ...
4
votes
2answers
3k views

What image dimensions are used for 500px?

The name is 500px.com, but what is the image resolution for which to optimize before uploading your photos there?
7
votes
2answers
1k 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 ...
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
1answer
272 views

Is it better to take a high resolution photo and then resize it than to take it at lower resolution? [duplicate]

Possible Duplicate: Does it give higher quality to shoot in low-res mode in-camera, or to downsize high-res photos later? Compare these two scenarios (using the same camera): 1) You take a ...
9
votes
3answers
2k views

Does change of lens affect a camera's megapixels?

I have a Nikon D40. It has only 6.1 MP. I am planning to buy additional lens for it. Can changing the lens of the camera increase or decrease the megapixels of the camera?
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 ...
21
votes
4answers
6k views

CSI image resolution enhance: How real is it?

So I watched the following 1 minute long Youtube clip from CSI New York. In the clip, using what seems to be the recording from a standard bank camera, they zoom in at least 100, and see the image ...
14
votes
3answers
4k views

What is the Nyquist Limit and what is its significance to photographers?

The Nyquist Limit is frequently mentioned in the context of lens and sensor resolution. What is it and what is its significance to photographers? Here is an example of it being used by DPReview.com ...
5
votes
1answer
3k views

What resolution would be needed for a billboard advertisement?

Does anyone know the required resolution for a photograph to be used on a billboard? Would the Canon 7D be able to provide a large enough file size to meet the requirements?
2
votes
2answers
350 views

What will be typical pixel count of digital camera 8 years from now? [closed]

Sorry if this question is not serious. I was discussing this with the friend and we had different opinions. I'd think others want to throw in their opinions. The question is: What will be typical ...
8
votes
5answers
366 views

Why does viewfinder spec state 3 times more dots than there are pixels?

My DMC-G2 has a viewfinder spec of 1,440,000 dots, but I read a review that says it is really 480,000 pixels: The electronic viewfinder has an extremely high resolution of 1,440,000 dots (480,000 ...
7
votes
3answers
854 views

Is it worth investing in a used 35 mm Film camera?

I've a Canon 60D and I'm mainly interested in shooting landscapes. I feel very interested in buying a used canon EOS film camera (since my EF lenses are compatible). I would like to take pictures ...
11
votes
3answers
1k views

Does shooting at lower RAW resolution using crop sensor camera mimics qualities of full frame cameras?

I'm not talking about changes to the focal length. I've read many post that say in full frame camera the pixel density is lower compared to crop sensor camera's and so it captures more light and has ...
2
votes
1answer
695 views

Why are low-resolution versions of my images shown in Adobe Bridge?

When I browse photos in Adobe Bridge, they are often not as sharp as they really are, as if Bridge loads a low-res version of the photo for speed. This makes it hard to pick photos that are good, as I ...
-1
votes
1answer
238 views

What's the standard photo dimension on mobile devices? [closed]

What's the standard or popular photo dimension on mobile devices like tablets and smartphones? (Android / iOS) Is it something like 1024x768 pixels?
9
votes
2answers
903 views

How do I choose which resolution (megapixel) and compression (normal, fine, superfine) to shoot in?

What do I lose if I do not shoot at maximum res? or the "superfine" setting? What are the disadvantages? I would like to learn how digital cameras save in lower resolutions jpegs. Is the extra ...
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 ...
0
votes
2answers
1k views

how do you determine the size of an image based on resolution , ppi, and type?

I'd like to be able to determine the size of a an image with a particular resolution/ppi for JPEG & PNG formats. Are there any online tools to do this?
9
votes
1answer
842 views

Can the slant edge SFR method measure lens resolution greater than the Nyquist limit for the camera sensor?

The slant edge SFR method has become the standard for measuring resolution of lenses and camera systems. It works by scanning a five degree slanted edge to calculate a line spread function. This is ...
2
votes
1answer
308 views

Is the BxU measure of lens resolution still used by anyone?

The background In 2004 DxO released DxO Analyzer. It pioneered a new measure of lens resolution that it called BxU or Blur Experience Unit. Luminous Landscape reported on it (DxO Explained) and ...
12
votes
4answers
3k views

Why are effective pixels greater than the actual resolution?

This page compares Canon EOS 550D and Canon EOS 500D cameras and mentions 18.7 million effective pixels for 550D. However the best resolution possible using this camera is 5184 * 3456 = ...