[quote name='Brightcolours' timestamp='1317202981' post='11922']
That does not even make sense. Printers never print at 300 dots per inch, nor 600 dots per inch. Those values are relics from the black and white post script laser print era. [/quote]
So fill in the blanks then - what DPI needs to be defined for each print to make the two comparable? And what printer supports such fine settings?
That's why I wrote "resample" and not "downsize".
What printer do you suggest for this test? What DPI settings?
Because A4 is the largest size that most home printers support. If you have a specific alternative methodology in mind, feel free to share it! My hunch is that whatever you're going to suggest will be far too costly to be of use to people who want to compare the output of camera A with that of camera B. This is why normalizing the size of files and comparing on screen side by side is what most people prefer to do, at least those who understand why comparing 100% crops is useless.
I don't know what you mean by "normalize before measuring". I'm referring to normalizing the size of the resulting files. For example, upsizing K5 images to match the A77 resolution and comparing them with the native Sony images, and to make the test complete do it the other way around - compare downsized A77 images with native K5 ones.
That does not even make sense. Printers never print at 300 dots per inch, nor 600 dots per inch. Those values are relics from the black and white post script laser print era. [/quote]
So fill in the blanks then - what DPI needs to be defined for each print to make the two comparable? And what printer supports such fine settings?
Quote:Your example ANYWAY does not downsize. It makes no pixel merge with others, which is the problem of downsizing. Varying downsize amounts make for varying results. Upsizing is quite a bit less problematic. Especially since printers have a much finer gradation than 600 DPI.
That's why I wrote "resample" and not "downsize".
What printer do you suggest for this test? What DPI settings?
Quote:And why are you talking about A4 anyway, It is not Word and an annual report we are talking about either.
Because A4 is the largest size that most home printers support. If you have a specific alternative methodology in mind, feel free to share it! My hunch is that whatever you're going to suggest will be far too costly to be of use to people who want to compare the output of camera A with that of camera B. This is why normalizing the size of files and comparing on screen side by side is what most people prefer to do, at least those who understand why comparing 100% crops is useless.
Quote:Best is not to normalize before measuring, but to normalize the results?
I don't know what you mean by "normalize before measuring". I'm referring to normalizing the size of the resulting files. For example, upsizing K5 images to match the A77 resolution and comparing them with the native Sony images, and to make the test complete do it the other way around - compare downsized A77 images with native K5 ones.