Ok, so you've purchased some really nice panoramic sky bitmaps, like these:
Nice right?...But in order for them to look their best your need to map them to a "skydome" object. Naturally that isn't a real difficult task, but what if you want to use the mrSun & FG with your skydome? Chances are it'll block the mrSun, which is an easy fix by adjusting the shadow options on the dome properties...but that's just going to allow indirect lighting from the mrSun...what about some skylight?
For those that are familiar with photography, you already know how to configure the whitepoint setting on the mr Photographic Exposure control. For those that aren't familiar with photography, this tutorial may help.
With that being said, there are many people out there that want to have control over this natural effect. So how exactly does one control color bleed? Well as with anything in 3ds Max there's probably a dozen ways to accomplish this task...I'm going to discuss one easy (IMHO) method.
I thought it would be helpful to post some info on getting realistic results out of the mr Photographic Exposure Control. I see frequent questions on various forums in regards to getting photometric lights to "work" with the mrSun/mrSky. There's no problem with using photometric lights and the daylight system configured with the mrSun/mrSky. Most of the time I think the problem stems from improper exposure settings, or users that want/need unrealistic results...like an architectural interior that has an under-exposed exterior (windows show a dark blue sky outside), but is also brightly lit on the interior by the sun/sky.
If you've ever been frustrated with having black edges/faces on your glass materials, this may help. Now of course the most important issue with glass (or anything reflective) is to ensure you have a nice environment for it to reflect. If you leave the default black background then you can't really be too surprised when your glass renders black.
By participating you'll often pick up a new tip/trick that allows you to render more efficiently or makes your work more realistic, etc.. Therefore my tip today is to go out and participate in these challenges/charrettes regardless of your current skill set. BTW, if your fairly new to 3d don't have the mindset that your work isn't up to par so you can't join...jump in! At the end, I bet you'll be glad you did.