What caught my attention in the review is the f/2.0 to f/2.8 range of the 28-200mm (35mm equiv.) lens: To put this in perspective, a Tamron or Sigma 28-200mm f/3.8-5.6 lens is about $250.
To stress the importance and value of this "big glass," f/2.0 at an ISO 100 setting yields the same light hitting the CCD sensor as a lens set at f/4.0 at ISO 400 -- And the Canon 10D (big brother to the Digital Rebel) has rather poor noise performance at its ISO 400 setting.
The modified Bayer CCD layout (green-red-emerald-blue, instead of green-red-green-blue) is also quite interesting, and I would have liked to have seen this fleshed out further in the review: What does it actually do vs. what it's claimed to do.
Lastly, the full-sized image posted of the rusty hinge & green gate has been manipulated [It's saved as a .BMP file]: At minimum I would have liked to see the original JPEG file (so we can read the EXIF data); or better yet, a CCD-RAW file (zipped if the camera doesn't shoot compressed CCD-RAW files), so we can closely examine the lens' chromatic aberration: The whole raison d'etre for so many pixels to begin with is to make bigger enlargements -- And this is where chromatic aberration rears its' ugly head
Submitted by Dan Schwartz on Tue, 05/25/2004 - 01:44.
Noise: ISO 100@f/2.0 = ISO 400@f/4
What caught my attention in the review is the f/2.0 to f/2.8 range of the 28-200mm (35mm equiv.) lens: To put this in perspective, a Tamron or Sigma 28-200mm f/3.8-5.6 lens is about $250.
To stress the importance and value of this "big glass," f/2.0 at an ISO 100 setting yields the same light hitting the CCD sensor as a lens set at f/4.0 at ISO 400 -- And the Canon 10D (big brother to the Digital Rebel) has rather poor noise performance at its ISO 400 setting.
The modified Bayer CCD layout (green-red-emerald-blue, instead of green-red-green-blue) is also quite interesting, and I would have liked to have seen this fleshed out further in the review: What does it actually do vs. what it's claimed to do.
Lastly, the full-sized image posted of the rusty hinge & green gate has been manipulated [It's saved as a .BMP file]: At minimum I would have liked to see the original JPEG file (so we can read the EXIF data); or better yet, a CCD-RAW file (zipped if the camera doesn't shoot compressed CCD-RAW files), so we can closely examine the lens' chromatic aberration: The whole raison d'etre for so many pixels to begin with is to make bigger enlargements -- And this is where chromatic aberration rears its' ugly head