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JPEG is an adjustable "lossy" compression method commonly used in digital photograph. The most common filename extensions for images using the JPEG format are .jpg and .jpeg. Compare to alternative image formats such as TIFF and the various RAW formats.

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18
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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 ...
5
votes
2answers
2k views

How to reduce the effect of bright day light in the photographs?

This photograph was taken at around 9:30 AM. The sunlight was bright. I can't shoot in raw. I have adjusted the brightness and the contrast by which at least the tree is appearing brighter. Look at ...
5
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3answers
1k views

What settings should be kept in mind while shooting a jpeg photo in order for it to be edited later on?

Canon PowerShot SX210 IS doesn't support RAW format, so I don't have a choice w.r.t shooting in Jpeg format. Do we have some special camera settings that we shouldn't touch or should set in some ...
7
votes
2answers
1k views

Why is the pixel count of RAW images from the Panasonic LX5 slightly larger than the generated JPEGs?

I'm new to working with RAW images, and I'm capturing simultaneous RAW+JPGs with my new Lumix LX5, and using Bibble to view/process the results. I'm very surprised that the RAW images taken at 24mm ...
13
votes
8answers
3k views

Best way to import and save when shooting in both RAW and JPEG?

I currently use Picasa to manage my photos and when I import my photos I see "doubles" because I'm shooting in both RAW and JPEG. I'm currently moving my raw photos manually to a folder outside of ...
11
votes
3answers
797 views

Should I convert RAW to jpeg before making an HDR?

I've been going back and forth with this. I've been looking more into working with some HDR to just get a feel for the process. I have a 500D and I'm using exposure bracketing to take 3 shots. 0, -2, ...
19
votes
2answers
14k views

How does Picasa process RAW photos?

How does Picasa decide how to process RAW photos? When I shoot in RAW+JPEG the two pictures can look dramatically different. Is it just converting the RAW files upon import, or is post-processing ...
1
vote
2answers
1k views

Get components stream Y,Cb and Cr in photoshop

Is there a way to get the component images corresponding Y, Cb, Cr in photoshop. I just need to combine them in layers to see how they form the original image.
4
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5answers
2k views

Is sips lossless when used for JPEG rotation?

I am organizing a group of old images on OS X. Many are JPEG and predate the EXIF tag for camera rotation. Of course, many tools degrade the image (Question '10') if you edit the image. It is possible ...
9
votes
2answers
316 views

middle ground between RAW and JPG?

JPG files use 8 bits per color per pixel (I've never heard of any camera that uses the alleged 12-bit-per-color-per-pixel extension) and is a compact way of storing images. RAW files are huge but ...
14
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5answers
3k views

Fix photo timestamps?

I took a bunch of pictures, and when I loaded them onto my PC, I discovered the time on my camera was set incorrectly. Now this normally wouldn't be a problem...but I am combining pictures from ...