Butterfly

by Rodrigo

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0

Be aware that it's the proportion that is important here, rather than the dimensions. If you crop to 800x600px as you specify, then your image will only print at around 8.5cm across by about 6cm tall if you print at 240ppi resolution. I think it is the ratio of the long edge to the short edge that you need to remember, so 800x600px is a ratio of 4:3. In ...


1

Your camera takes pictures with 4928×3264px, 800x530 is a severely reduced size, which loses a huge amount of data. For printing, you should aim at ~300dpi, or at least 150dpi for a decent picture. 50/2.54~=19.69, so the full resolution width 4928 would yield about 250dpi, which is certainly ok. an 800x530px picture will come out terribly at this print ...


3

800×600 pixels is both far too small for printing at 70×50 cm, and also the wrong aspect ratio - 800×600 is a 1.33:1 ratio, but 70×50 is a 1.4:1 ratio. Your D7000 has a native resolution of 4928×3264; from that you can make a 1.4:1 crop of 4570×3264. You should be aiming to use as much of the pixel data you have as possible when printing - attempting to ...


7

Here's a solution using python and opencv: This will crop all the faces it finds in the jpeg photos in whatever folder you run it in, with the padding specified by the left, right, top, bottom variables: import cv2 import sys import glob cascPath = "haarcascade_frontalface_default.xml" # Create the haar cascade faceCascade = ...



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