SCraig
Been spending a lot of time on here!
- Joined
- Nov 12, 2011
- Messages
- 6,474
- Reaction score
- 2,450
- Location
- Nashville, TN
- Website
- sc-photo-tn.com
- Can others edit my Photos
- Photos NOT OK to edit
Engineering drawings virtually ALWAYS have a border around the drawing area. That border is perfect for aligning distortion correction software. If for some reason there isn't one there just put some blue painter's tape on the cover over the drawings and use the lines for correction.- Image Distortion - because of my photographing a flat drawing from a center point, I am assuming that this will cause distorsion of the resultant photo image. I have googled and seen several different softwares that claim to correct distorsions like this. But it is unclear to me what I should do to to ensure I can accurately correct those distorsions or what type of software might be best.
Most good image editing software (and even some of the not so good) have tools to correct for barrel distortion, pincushion distortion, and keystone distortion. Some of the better software can compensate for some really serious distortion. When you take your shots leave some area around the drawing. Most distortion corrections will use some of the image area and you'll need to have room to crop. After doing it a few times you'll have all the settings down pat, and they won't change much from drawing to drawing.
Shoot from as high above the drawings as you can get and with the longest focal length that will work. As focal length gets shorter distortion gets worse (think of how fisheye lenses work).