They are not the same aspect ratio so if you scaled the picture up it would be distorted. You will have to leave a border, or crop the original if you don't want the distortion.
It's easier to think about it in mm. 121x178, which is a 6:9 ratio near as dammit, and 203x254. So I would either: divide the smaller picture into a 6x9 grid, which is 35mm film ratio, and draw a 6x9 (inch) grid on the sketch book, or: draw a 8:10 ratio frame ((121/10)*8=96mm x 120mm) on the smaller picture to crop it as required, with a 8:10 ratio grid inside it, and draw a 8x10 inch grid on the sketch book. B > On 12 Jan 2017, at 23:26, David J Brooks <[email protected]> wrote: > > Hi all > > I have decided to channel my inner David Savage and have started > taking weekly drawing classes. I have come at the end of the fall > classes but will start the winter in a fw weeks. The instructor > suggested i start off using what some of the other students are doing > and use the grid system, especially since i want to work on my > perspective. I am using prints from some of my old building shots. > > My problem is this. I have several pictures that printed out 4 3/4" x > 7" and i want to draw it onto an 8x10 frame in my sketch book. I have > looked through google but most of the info shows how to double or half > the picture not how to do the odd sizes I;m horrible at this part of > mathematics, but, can someone suggest a google page or math page??so i > can work out the ratio > > Dave > > -- > Documenting Life in Rural Ontario. > www.caughtinmotion.com > http://brooksinthecountry.blogspot.com/ > York Region, Ontario, Canada > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
