Mike Chaney's Tech Corner

Hi Mike et al

I added this as an edit/postscript in my post about first impression and results using TTS.

"Edit - just thought?  The output stage whether print or print to file or indeed save as (equivalent to print to file???) has the Hybrid Interpolation with Default Sharpening of 5, so in the scheme of things just how much sharpening is seen accomplished by TTS as above and the last step that applies the 'output' sharpening???"

Likely overlooked as it was 'late' edit.  ;)

Now having thought about using "save as" after TTS and resizing at that point may not get the Hybrid Interpolation and default sharpening of 5 that happens when "printing" or "save to file" (for sending to a print lab).

Therefore the question remains in two regards:-

1) If you are using TTS then "save as" resizing at that point say at 800px longest side what method of interpolation & what if any sharpening is applied unknown to the user in the machinery of QU???

2) If after using TTS you then size the image for printing 'as normal' say a 10x8 print, the output parameters use Hybrid Interpolation and default 5 sharpening.

So subject to the answers (from Mike?) about the backend handling in the above scenarios the web image could appear relatively different to the printed one.  I am just trying to understand the implications of the way QU handles the above and as such does the workup in #1 above need another pass of sharpening in say CS2???

For the record ~ when I PP in CS2, I will do Capture Sharpening to taste, levels & other KISS steps as needed on the full sized image.......then if for web (fairly common for that at the moment) I will resize using Bicubic Sharper and then do a pass of Smart Sharpening i.e. output sharpening.   Therefore how does what QU does in each case above reconcile to this methodology???

TIA for the answers and insight given.

 :)

Hi BB,
Answer: Whatever is set in Interpolation/Sharpening Preferences. Note that there is a control for Anti-Aliasing which applies when downsizing.
The easiest way to make a web copy is to use the web copy feature; RMB on preview with images in queue.
It's not clear what the question is here.
However to be absolutely clear, when you say "size the image for printing 'as normal' say a 10x8 print", with Qimage you don't do anything with the image as such, just specify 10x8 as the print size and Qimage takes care of all the interpolation; leave the image at its original pixel size.
You should set "Smart" print sharpening such that  prints look like the screen image wrt sharpness, in the preferences dialogue, click the help button for info'.

I've never found that to be the case providing high quality jpegs are made when Qimage is used to to do it all.

I don't think it does  :o
Qimage wisdom (= Mike & users) says that the its interpolation algorithms are far superior to bicubic and it is best to interpolate only once in Qimage.
Why go through all the hoops above when web copies can be done in one step with Qimage; have you tried that?
Terry