[MapProxy] scale difference wms-direct vs. mapproxy request

[Lars Lingner]

Hello,

in an mapProxy setup I found something I cant explain. Hopefully my
description and the images are helping to describe the situation.

When I'm doing a direct request to the WMS (UMN MapServer) like this:

/cgi-bin/wms_servicep&EXCEPTIONS=XML&FORMAT=image/png&TRANSPARENT=false&VERSION=1.1.1&STYLES&request=GetMap&LAYERS=all&BBOX=4.21875,50.792047064406844,4.2626953125,50.81981826215653&width=256&height=256&SRS=EPSG:4326

...I'm getting a tile back like [1]

The request to MapProxy looks like this:

/proxy_service?EXCEPTIONS=XML&FORMAT=image/png&TRANSPARENT=false&VERSION=1.1.1&STYLES&request=GetMap&LAYERS=all&BBOX=4.21875,50.792047064406844,4.2626953125,50.81981826215653&width=256&height=256&SRS=EPSG:4326

...but results in an different styled tile [2]

The extent is the same, but the streets are styled slightly different
and also the labels doesn't look the same.


Can this be caused by the metatiling?

What can I do to find out the reason?


Thanks in advance


Lars


[1] http://www.lingner.eu/sandbox/tmp/kachel-direkt.png
[2] http://www.lingner.eu/sandbox/tmp/kachel-mapproxy.png