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VirtualFM
11-26-2016, 10:25 AM
I don't know how to say this without blatantly display my utter ignorance, and I don't know how the heck I've been entitling myself as a "graphics artist" for the last 20-something years, but I didn't know this and never thought about that option in Photoshop. True that sometimes when blurring things I thought "Hum, that looks weird"... but just didn't think much about it...

So, for other possible "ignorants" like me:

https://www.youtube.com/watch?v=LKnqECcg6Gw

BigHache
11-27-2016, 07:31 PM
Nice little math lesson. I've encountered this but also didn't give it much thought because no one really cared. It's been more about, 'how fast can this be knocked out'?

In After Effects the Fast Blur filter gives the incorrect result, but Camera Lens Blur filter gives the correct result. This would be why the Fast Blur is fast. ;)