I want to know how to resize a photo without loosing quality....... in the image resize box the is a check box that says maintain file size ......what does that do .
I have tried to resize using it and the file stays the same as the original.
Thanks for any advice
Mike
So when I off load from my camera it comes in as a jpg...... then I should save to CPT ?...... But if its already a jpg the quality will not be as good as say TIFF......... can i save from the camera to TIFF ?.......maybe i should shoot everything in RAW.....is that an option ?
Now I'm really confused to be honest .....
David let me get this right .....your saying if I save first generation to CPT it will be the best I will get ....
Foster I'm not sure what you mean .
Why would a canon D5 generate such a poor format photo ...... or am I way off the mark.
BTW i'm only thinking of photos going to print NOT web .
Thanks for all the info......... not sure I understand some of it but it all helps me make a choice.
mike Rawlinson said:maybe i should shoot everything in RAW.....is that an option ?
Depends on your camera. Canon SLRs give you the choice -- jpg only, raw (CR2) only or both.
I usually keep the original RAW for anything important.
mike Rawlinson said:David let me get this right .....your saying if I save first generation to CPT it will be the best I will get ....
First off the file you get from the camera is the original, JPG file format uses a LOSSY compression, that means that you lose some date everytime you resave as JPG file format.
So if your camera only gives you JPG resave the file as CPT or TIF something that uses no compression or that uses LOSSLESS (no data loss) compression.
mike Rawlinson said:Why would a canon D5 generate such a poor format photo ...... or am I way off the mark.
JPG was settled as the default because when this was done systems had little storage spaced or power.
OK the RAW format: RAW file processing and color management are much like a mosaic, the more pieces of it you have the more you get the full picture. I cover this in my CorelDRAW color management book at www.graphictechnology.com, my recent (9/29/2011) CM webinar I did for Corel should be posted on their site in a day or two. In reality you cannot seperate color management from anything and if you process RAW you had better have your color management ducks in a row.
I know I'm going to catch crap for posting this but I cannot stear you wrong, 85% of what your hear or read about processing RAW files is done by those who have little or no understanding of color management and therefore is wrong. With that said if you get your act together with a color managed system ONLY USE RAW, no kidding it's that good.
Ok the basics, control the ambient conditions around your display, (light the room with 5,000 kelvin, have shades to control the light from outdoors), you can go crazy here and paint the room neutral gray and put shades on the monitor, (it's up to you how critical you want this but it all has value) use an EYE ONE or similar device to calibrate your display ( about $150 to $400) and regularly update the display profile. Place a RIP driven calibrated postscript print device on line for proofing, (about $3,000 minimum).
You can get by and get decent work with, the lights in the room, about $300 for the display calibrator and some shades. A full professional system like mine that calibrates the display and prints will set you back about $17,000, which includes the printer.
After you get the shades, lights and calibration device working, RAW is repeatable and reliable. Here's why you need the minimum I mentioned. RAW files have no color they are the RAW grayscale captures from the Bayer capture pattern, ( red only , green only and blue only, twice as many green sensors) they produce three grayscale data streams that the RAW converter converts to RGB. So you need to select the RGB color space to convert the RAW file to and adjust the conversion yourself. Can you imagine converting with a laptop or some uncalibrated system? Well that's what 95% of those who rave about RAW conversion really do!
I in conscience could not offer any advice to people until I ponied up the bucks for the full system and saw the real potiential, it helped that I am in the print business and need the proofing system but because of that I also resalized how much BS was being spread around about RAW.
A good camera and photographer with TIF files can do 95% or more of what people with minimum calibration can get from RAW. In my experience 99% of those who use RAW use it incorrectly and use it to compensate for bad photography and captures, because the RAW converter gives you extensive tools for fixing bad captures, it's real benefit!
I suggest converting RAW to the ProPhoto RGB color space 48 bit and archive as a CPT file as only Corel Photo-PAINT is a true 48 bit application and in a few years your current RAW format may not be supported. Photoshop and TIF use 14 bit color check out Bruce Lindblooms site he forgot more about color then most know.
I am in the process of writing a new color management book (18 months away) that will concentrate more on work flows.
Sorry foster ....I now understand what you was talking about ....... I was talking about mm........Thanks David for your in depth answer........ I'm still trying to read and digest it all.....
All i know now is that jpg is not good to edit with .
I will use Fosters way and learn more about color management.
Thanks again for all the help.