Hi All,
have been away for a while ( started "the big trip") but due to some unfortunate family tragedies have had to cut it short

I have started a course in Newcastle to expand my base skills and at present going through the advantages of using white and grey cards or devices to adjust white balance/colour cast in camera and also to aid in exposure settings
What I am looking for is something that is relatively sturdy and compact that can assist me in this
I have looked at the Passport series and would like to know if there is any other "bits" out there that other members have found useful/ good value
One that I did see but can't remember the name of had a fold out "obscure" disc that could be used to adjust the white balance using the light source, not reflected light
Thanks in advance
Bob