I have a 60D and I shoot in , work/save as TIFF (Photoshop 5) and high res . But I notice a lot of places only accept for printing. The issue I have is my TIFFS are approx 50mb but the high res JPEGS only approx 8mb. I would like to print some fairly large images at times (30 x 20) if possible.
To confuse matter I see if I shoot in and large from the camera, the JPEGS come out at approx 16mb? (double the re-worked saved JPEGS?) So what are my options for best printing?
I have zoomed in on both the TIFF and high res and look similar to my eye, but if I use an online printing company I get a warning on the image quality if using the 8mb JPEGS (for big prints) as they don't accept TIFF.
any advice and help options appreciated.