quantifies how much detail an image can convey
2
votes
1answer
321 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
174 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 ...
2
votes
1answer
130 views
Does increased resolution compensate for diffraction?
Given a sensor size, the diffraction limit (and cut-off) are determined largely (entirely?) by the density of pixels on the sensor. With the trend of ever-increasing megapixel counts, this means that ...
2
votes
1answer
260 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 ...
2
votes
1answer
505 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
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
vote
2answers
353 views
How to scale down images in Lightroom while maintaining quality?
I am working with a product photographer who is having issues understanding dpi and resolution.
She is shooting products to go onto a website using a Canon 5D and an ortery box.
I have asked her to ...
1
vote
4answers
170 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 ...
1
vote
3answers
700 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 ...
1
vote
1answer
5k 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 ...
1
vote
2answers
71 views
Canon a2300 resolution problem
I have Canon Powershot a2300.
It was working fine till yesterday but i dnt know what settings have been changed to reduce the size of the image. Previously images sizes were about 4mb now it is kb's ...
1
vote
3answers
177 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 ...
1
vote
1answer
382 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
237 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 ...
1
vote
1answer
70 views
Optimal JPGs resolution out of a Point & Shoot camera for storage size and quality? [duplicate]
Simple point & shoots don't produce RAWs, they produce JPGs. Let's assume you have a modern P&S which shoots 16 megapixels maximum in Super Fine, Fine and Normal JPGs.
First side question is ...
0
votes
3answers
147 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 ...
0
votes
1answer
128 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.
0
votes
1answer
206 views
How can I compare MTF50 to a manufacturer's MTF chart?
Currently working with a trial-copy of QuickMTF (Imatest's software kept crashing on me), and I'm trying to get some basic MTF readings for my Canon 85 f/1.8 lens on a 6D. My first set of test shots ...
0
votes
1answer
326 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 ...
0
votes
1answer
483 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
2answers
68 views
Best dpi for printing a 48x18 inch at 200%?
I have an image in photoshop I want to print at 200%, and right now it's 48x18 inches, and the resolution is 72 dpi. I read somewhere that changing it to 600dpi would allow me to scale it by 200% at ...
0
votes
1answer
172 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 ...
0
votes
1answer
144 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 ...
0
votes
2answers
741 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?
-1
votes
2answers
170 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?
-1
votes
3answers
201 views
Why won't an online service print 16x20 from an 8 megapixel cell phone photo? [duplicate]
Possible Duplicate:
Is there a general formula for image size vs. print size?
I have a wonderful photo from my cell phone and several people would like a 16x20 or at the least a 11x14 ...
-1
votes
1answer
93 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 ...
-1
votes
1answer
182 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?
