> On Sep 5, 2019, at 11:50 AM, John <jsessoms...@nc.rr.com> wrote: > > On 9/5/2019 11:08:33, Eric Weir wrote: >> >> So now two questions: (1) My image is 72 dpi/ppi, far short of 240 dpi/ppi. >> What can I do with that, i.e., what’s the largest print I could get? (2) The >> camera was my phone, an iPhone 6s. The 72 dpi/ppi result was with iso at 25. >> Is what I should expect? Will I ever be able to get good large prints with >> this camera? > > No, your image is 4032 x 2268 pixels. > > 72 dpi is the display resolution. Has nothing to do with printing. > > Printed at 240 ppi, 4032 x 2268 pixels will give a print 16.8" x 9.45". > > A good "printer" (i.e. service bureau like Bay Photo) can probably work with > 200 ppi to give you a print up to 20.16" x 11.34" which could be cropped to > the 20x10 print you wanted. > > ... although the guy in the back actually doing the printing is probably > going to call you bad names. They much prefer at least 300 ppi. > > But, when I was running the mini-lab I could get an "acceptable" result with > as little as 150 ppi (C-type on Kodak Endura glossy paper).
OK, now I understand. (I think.) One last question. (I hope.) What determines the size of the image I get with my camera, i.e., my phone? Is it always the same? Is iso a factor? ------------------------------------------------------------------------------------------ Eric Weir Decatur, GA USA eew...@bellsouth.net "The invincible shield of caring Is a weapon sent from the sky against being dead." - Tao Te Ching 67 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
