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07-04-2007, 08:58 AM   #1
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Maximum Printed Image Size vs ISO - Successful or Not?

Hi!

Would like to get a feel for large prints from K100D at higher ISO Ratings.

Like to run a quick survey to find out the following ...
  1. Original File Size
  2. ISO
  3. Physical Print Size
  4. Physical Print Method
  5. Outcome

I will go first...

6mp
ISO400
8" x 12"
Discount Store - Digital Lab - Fuji Paper and Machine
Very Sharp, great Contrast...

Sample Photo - 3 reasons to buy a DSLR...!



Last edited by Sideways; 07-04-2007 at 10:20 AM.
07-10-2007, 07:41 PM   #2
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I cannot comment on your query - I have no experience there - but as to the justification for CBA/LBA there can be no doubt as to its absolute validity.
08-07-2007, 06:00 PM   #3
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I have had 12-18 (ISO 200) and 11-14 (ISO 400) printed from my K100d at London Drugs that look stunning. I think you could get good 8-10's from ISO3200 if you are careful.
08-08-2007, 05:38 AM   #4
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Original Poster
Thanks for the reply.. Steve!

12 x 18.. Excellent.

You say 8 x 10's at ISO 3200.. you are carefull.. what do I watch out for with High Iso Shots?

08-08-2007, 09:37 AM   #5
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QuoteOriginally posted by Sideways Quote
Thanks for the reply.. Steve!

12 x 18.. Excellent.

You say 8 x 10's at ISO 3200.. you are carefull.. what do I watch out for with High Iso Shots?
Make sure to nail your exposure. Any hint of underexposure at 3200 will send noise through the roof. Also shoot in RAW.

A lot of noise is carried in the darker shadow areas. Using a steep (high contrast) tone curve and a higher black point can hide this. (one of the tricks that gives Canon a rep for good high ISO noise)

Also if the image was taken under incandescent light don't correct the white balance, ie leave a bit of the orange cast from the light in the image. While this is not technically correct much of the high ISO noise is carried in the blue channel, which has to be boosted to correct images shot under incandescent light.
08-08-2007, 10:19 AM   #6
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QuoteOriginally posted by arbutusq Quote
I have had 12-18 (ISO 200) and 11-14 (ISO 400) printed from my K100d at London Drugs that look stunning. I think you could get good 8-10's from ISO3200 if you are careful.
LD has developed several 24 x 36 pictures for me (ISO 200), straight from my k100, and they all look stunning

You can't beat their price either, although I've moved most of my business to a small local shop including my poster sized prints (the local shop doesn't roll the prints up, so it's easier for me to work with them)
08-08-2007, 11:00 AM   #7
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Another thing to remember is viewing distance. Someone viewing a 24 by 36 probably won't get to within a few inches and count hairs so the resolution needed is lower.
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