Camera Analysis ...

What about the 40D's JPEG format ?
  • The CT-EyeChart image to the right was sized to 55x55pix in PhotoShop.
  • Remember, 55x55pix is required with the 40D to get 50% readablity.
  • Remember also, that only 35x35pix are required with the original.
  • Using PhotoShop, the 55x55 image was then converted to JPEG.
  • Thus, it uses the same number of pixels as the 40D's JPEG image.
  • However, this one is quite easy to read! - the 40D image was not !
  • So, the 40D's JPEG conversion could be a factor ...
  • But, how much ?