Archived posting to the Leica Users Group, 2000/04/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]My statement: >> A 4 inch X 5 inch image will require >> 4X300=1200 pixels by 5X300=1500 pixels. Measured in pixels you'll want a >> 1200X1500 pixel image. For black & white you'll need 1,800,000 pixels or >> as commonly expressed, 1.8 mb. Austin Franklin responded: > >Black and white has gray scale, and you still need some number of bits per >pixel (if you are talking about pixels), unless you want a monotone image. > >[correction] I stated this slightly wrong...what was meant was number of >pixels does not mean the same as number of M bytes, unless you are talking >about 8 bit pixels. For B&W, that would be 256 gray tones...if that is >sufficient for you, then, yes, a 1.8M pixel would be 1.8M bytes... If you >wanted 12 bits/pixel then it would 2.7M bytes, and give you 4096 gray >tones.... 256 gray tones is sufficient for nearly eveything you've ever seen printed lately in black & white halftone - because that's how it was made. The image might have existed as 12 or 16 bits at some point but when it went to the imagesetter it was 8 bit. Austin, you like to argue too much for me. I think you have trolled me again. My point was to illuminate the "digital and film" threads that pop up from time to time. What I said was and is correct. I do not appreciate your nitpicking. Especially since there are no nits to pick! Next time ADD something to the thread. Don't just mire everyone down. Since you are so wrong spirited I can go a bit more. If you MUST continue please take it off the LUG. We are way off topic. I apologize to the LUG for straying from our topic. Henry Ambrose