High Zoom quality - what's the difference?

Ask for help and post your question on how to use XnView Classic.

Moderators: helmut, XnTriq, xnview

Post Reply
klumy
Posts: 229
Joined: Sat Jun 18, 2005 9:33 am

High Zoom quality - what's the difference?

Post by klumy »

I can't see any differences on my TFT when using high quality zoom, except that high quality zoom is much slower.

Do other users see any differences in this option?
XNView 1.91.5
Windows XP SP3
Dreamer
XnThusiast
Posts: 4608
Joined: Sun Jul 25, 2004 9:08 pm

Post by Dreamer »

Yes, especially "reduce", but only in Viewer / Fulscreen from Viewer, for Fullscreen from Browser, there is another option "Delayed HQ...", but HQ is always enabled there I think...
klumy
Posts: 229
Joined: Sat Jun 18, 2005 9:33 am

Post by klumy »

what kind of difference do you see?
XNView 1.91.5
Windows XP SP3
User avatar
helmut
Posts: 8704
Joined: Sun Oct 12, 2003 6:47 pm
Location: Frankfurt, Germany

Re: High Zoom quality - what's the difference?

Post by helmut »

klumy wrote:I can't see any differences on my TFT when using high quality zoom, except that high quality zoom is much slower.

Do other users see any differences in this option?
The High quality thumbnails are rendered using a high quality resize algorithm (Lanczos, perhaps). If you set this option, make sure you clean the cache - thumbnails which are in the cache already, won't be recreated and you won't see any difference.
klumy
Posts: 229
Joined: Sat Jun 18, 2005 9:33 am

Post by klumy »

I don't mean the HQ thumbnail option

I mean the HQ Zoom Quality option in View
XNView 1.91.5
Windows XP SP3
Danny
Posts: 578
Joined: Sat Sep 04, 2004 5:09 pm

Post by Danny »

klumy wrote:I don't mean the HQ thumbnail option

I mean the HQ Zoom Quality option in View
If the zoom has an odd ratio like 1:1.333333 you will get jagged edges and pixelated details. HQ will smooth those down.
Post Reply