[solved] poorer quality at zoom factor <>100% (!)

[tom*de]

Hello,

I got a few jpg-pictures, made with: Canon EOS 5D Mark III (raw, converted in jpg by Lightroom)

The quality of these pictures shows xnview 2.34 perfect at zoom factor of 100%.
Bigger or smaller zoom factors, i.g. 70% the Pictures have strange ranges on edges and at the transitions.
The smaller the zoom ratio, the worse the quality(!) This is surprising, because a zoom factor less than 100% usually makes minor errors disappear.

Other graphic viewer does not show this effect at these Pictures.

Perhaps an adjustment in Lightroom are, with the xnview not cope? Or an adjustment in xnview, I have to set?
I use XnView for many years and still have not seen anything like it.

What could that be?


i.g.:

X-Auflösung [Pixel/Einheit] : 300
Y-Auflösung [Pixel/Einheit] : 300
Einheit der Auflösung : Zoll
Software/Firmware : Adobe Photoshop Lightroom 6.3 (Windows)
Belichtungszeit : 1/200
Blende : 8.0
Filmempfindlichkeit (ISO) : 500
Blitz : Ein
Brennweite [mm] : 20
Farbraum : sRGB
X-Auflösung Schärfeebene [Pix/E : 1600
Y-Auflösung Schärfeebene [Pix/E : 1600
Einheit der Auflösung Schärfeeb : cm (3)
Bildbearbeitung : Normal (0)
Kompression : 6
X-Auflösung [Pixel/Einheit] : 72
Y-Auflösung [Pixel/Einheit] : 72
Einheit der Auflösung : Zoll
Miniaturbild-Offset : 922
Miniaturbild-Länge : 16888

Tom

[cday]

Have you tried this setting tom*de :

Tools > Options...

[tom*de]

Tanks a lot, cday. It works fine, now.