Originally Posted by ddigit
This is a colour to B&W conversion. Done through photoshop using adjustment layers (gradient map/channelmixer). There was good contrast with the clouds. Possibily the photo has too much going on ??
Can I ask why you used gradient map and channel mixer to get your B/W conversion. I can't see there is anything to be gained by using two converters.
Use one or the other, there is more control with channel mixer.
As to your conversion, there does seem to be a great deal of noise in the sky, an effect I have had when using to much of one channel usually the blue channel, however it could be due to using two converters to do one job.
The conversion in my view looks over processed.
Would you like to email me a copy of the original file and I will do a conversion and attempt to get the sky you want but without the noise. Then I will give you full details on how I get there to have a go yourself.
The image its self has great promise.