Canada KGVI - War Issue Color Changes

Besides my initial posting that introduced me as a new member of SCF, this is really my first 'real' post.

A few other members encouraged me to post some pictures of my collection. So my first post is of the 3 cent issue of the KGVI War Issue: Scott 251 (dark carmine) and 252 (rose violet. The third stamp shown (in the middle) seems like an unlisted colour variation, but is in fact either the dark carmine or rose violet stamp that has been oxidized or had some other chemical treatment.



In completing this post, a question came to mind...."In meeting the max. 100kb size for a posted image, I had to re-scan down to 150 pixels. In other posts I have read that 600 ppi or even 1,200 ppi were used, and also I have seen images that contain more than the three stamps that I have posted. So how do you keep these large photos and high pixel sizes within the 100kb limit?"

Others here are much better qualified to answer than I.

But start with this thread in the Testing Area https://goscf.com/t/10675

KirkS

Thanks Kirks. I will download the Flickr program and do some further tests.

Flickr is a free website -- you just have to register; nothing to download. There are other free ones also that some folks use.

Rod will weigh in here soon; he's very adept with all this stuff.

Kirk

I will have a weigh in also. (although I just did weigh in at the clinic and my heart broke, not the scale, as I was heavier than I had imagined ) . . . But my stamps don't mind!

If I scan at 600 dots per inch (or perhaps it is pixels per inch, my mind has decided that it was dots so I went with that) I get quite a large file size JPEG.

So the only this of 600 dpi I can actually post is a cropped down part of the scan of the stamp.

Or, a 50 percent reduction of a 200 dpi scan.

Or, a 50 percent of a 50 percent of a 600 dpi scan. That is, I have to keep reloading and reducing by percentage in my photo editing program (by HP). Quite a labour intensive process.

I believe Rod scans at 600 dpi but when loading to SCF (here) he has to reduce the image size, percentage wise, to fit within the 90kn size limits of the forum.

This is done, and I agree with it, to preserve some record of the stamps on a central point in the web, so that the erasing of image-hosting sites by members or the sites themselves does not affect the quality of information available to future stamp collectors.

All this scanning at depth is unnecessary for web presentation (75 dpi is good enough) but to see details and study it in minuscule detail 600 is the minimum and sometimes 1200 is even better.