Commons:Featured picture candidates/Image:Grotte Saint Marcel bassins.jpeg

Image:Grotte Saint Marcel bassins.jpeg, featured

•  Info created, uploaded and nominated by Benh (talk) 18:42, 8 September 2008 (UTC)
•  Info This is a 3 exposures blended shot. Otherwise, the bassins would be overexposed and the walls dark. - Benh (talk) 18:42, 8 September 2008 (UTC)
•  Support One can see the barrier on the bottom corners, but I couldn't do otherwise to catch most of the bassins. I think it still look appealing, enough for me to nominate. -- Benh (talk) 18:42, 8 September 2008 (UTC)
•  Support --Lestat (talk) 20:26, 8 September 2008 (UTC)
•  Comment Why are there some areas that looks pixelated (for example some of the edges of the rightmost basins) ? By the way it looks like you have a "dead" pixel. It's purple and just a bit to the right of the big light in the background. /Daniel78 (talk) 21:12, 8 September 2008 (UTC)

• They are problably sharpening artifacts, which I think appear when I sharpen soft edges (I most of the time apply a sharpening of 4 or 5 (on a 10 scale) on DPP on my landscape pictures). I used a 10-22 lens at 10mm, which isn't razor sharp on the corners at that focal, probably hence the pixelisation. I don't know how I could fix this, and doesn't find the issue annoying for now (or am I too lazy ?) but if the consensus goes with you, I'll try to fix. I now noticed the dead pixel... aaah it's time I change my body... Benh (talk) 21:26, 8 September 2008 (UTC)

• I checked more carefully. My unprocessed RAWs already have the same artifacts, in a lesser extent. Sharpening has amplified them. - Benh (talk) 06:36, 9 September 2008 (UTC)

Why do you use the sharpening tool? It's quite destructive. --Massimo Catarinella (talk) 18:55, 11 September 2008 (UTC)

• I think it can improve a picture, like any tool, but that it has to be used wisely, like any tool... which apparently wasn't the case here. I rate sharpening level 4 on DPP as being moderate. If you take a picture in landscape mode with a Canon 400D, it already has a level 3 sharpening. I'll try to remove the artifacts when I have a bit spare time. Benh (talk) 19:59, 11 September 2008 (UTC)

Try the following: Open your RAW file in photoshop. Duplicate it and add the filter High Pass. Change the radius to 1,2 pixels. Then change the blending mode to soft light or hard light. If you want specific areas too be sharper, you can use the overlay blend and brush out the parts you don't want to be sharpened. You will now have a sharpened image without the sharpening artefacts. --Massimo Catarinella (talk) 21:36, 11 September 2008 (UTC)

I'll give this a try (but in Gimp :) ). thanks for the advice ! Benh (talk) 06:27, 12 September 2008 (UTC)

•  Support -- DarkAp89  Commons 16:50, 9 September 2008 (UTC)
•  Support --Karelj (talk) 17:03, 9 September 2008 (UTC)
•  Support --Tintero (talk) 17:31, 9 September 2008 (UTC)
•  Support Yeah it is not perfect in technical quality but the composition is I think awesome! support added by Aktron -- Benh (talk) 06:29, 10 September 2008 (UTC)
•  SupportNice composition and light. Guérin Nicolas ^(messages) 12:56, 15 September 2008 (UTC)

result: 7 support, 0 oppose, 0 neutral => featured. Simonizer (talk) 14:37, 19 September 2008 (UTC)