On 2013-05-13, at 5:06 PM, Tamas Rudnai wrote: > Thanks Herbert! RAW means it keeps all bits of each color components? So = it > is not converted to 8x8x8 bit of RGB, right? And I guess that is also not > compressing to lossy JPG where slightly different colors are washed > together, so when you change the contrast, color or white balance on the > post processing areas will not ended up in blocks, but kept in smooth > gradients, right? >=20 > I guess RAW format saves to ridiculously large files? >=20 > Tamas RAW is what directly comes off the sensor. The information in a RAW needs t= o be processed to produce something visible, but because of that you have t= he most flexibility to deal with the image. A RAW image hasn't had any debayering done, and no colour space conversion,= so you can set the result to any white balance you want.=20 Also you have full dynamic range as captured by the sensor. This is great f= or pulling details out of shadows.=20 As for size, yes, they are bigger. For example, on my T4i a "large" JPG com= ing out of the camera is about 5-8MB. A RAW file for the same image is arou= nd 25-30MB.=20 There are situations where you might NOT want to shoot RAW. The major reaso= n is quick action. Since a camera's buffer is finite in size, you will exha= ust it faster when shooting RAW. If I'm doing an action type of burst shot = I will sometimes turn off RAW so I can get my 5fps for more images. On the = T4i you will exhaust the buffer after 3-5 images when shooting JPG+RAW, whe= n shooting just JPG it hits 10-15 images before exhausting the buffer and s= lowing down. TTYL --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .