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Found 3 results

  1. Good morning, dear forum members. Since my iPhone X supports RAW, I only use the Lightroom CC App to shoot and edit my pictures. The results after saving edited RAWS as JPEGs are incomparably better. 100% crop shows details I could never achieve by shooting JPEGs directly. Does anyone of you upload iPhone pictures to Alamy and if yes, is this a problem for QC? Full size: https://www.dropbox.com/s/tu98e6qn1ifyc0f/2.jpg Full size: https://www.dropbox.com/s/by12eotw0y95ebt/3.jpg Full size : https://www.dropbox.com/s/2cmrvfo9ah7sh0d/1.jpg Thank you and Kind Regards Orest
  2. I have the dubious task next week of explaining image formats (jpg, tiff, raw) to a group of non-photographers (OK don't ask!). So I did some prep, and came unstuck in the detail. I'd always assumed that for raw files a rule of thumb that the pixel dimensions (width by height) times 3 (red, green, blue) would give a reasonable approximation to the filesize. But this simply isn't true. For example a 5472 by 3448 image (Canon Raw (Cr2)) only occupies 23,300 Kbytes on disk. I've played around with 8, 12,14 pixel depth, and understand that 1K is 1024 bytes, but I cannot make the numbers add up. My conclusion is that although Canon Raw is "uncompressed" it actually uses a "lossless" compression technique (e.g. given a string of identical pixels it records the colour of one pixel and the length of the string) and expands the string when the file is opened (e.g. in Lightroom) Is my assumption correct? Help needed & much appreciated!
  3. I would value some input on the shooting format my fellow contributors use. I currently shoot everything in RAW format with almost all camera with little or no in camera processing etc. This means I must must edit every image before submission etc and this makes for a very laborious and time consuming process. I have very recently been looking at samples of a friends portfolio shot with a quality Lumix compact camera in JPEG format and his results are very impressive indeed even without much post shoot processing. This holds good even for images printed on large canvasses and on display in his home. I would love to hear some responses and comments on the merits and demerits of JPEG shooting for stock photography purposes. Any constructive criticism or advice will be gratefully received. Thanks
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