Some Speedlights only support TTL FP up to 1/250th while others can support TTL FP up to 1/320th. You can use either type with the D7000.There may be other reasons, but that's one.
Larry"Red is gray and yellow white, but we decide which is right ....and which is an illusion" Moody Blues - Nights in White Satin
Visit my Nikonians gallery.
Copyright © Nikonians 2000, 2014
All Rights Reserved
Nikonians®, NikoScope® and NikoniansAcademy™ are trademarks owned by Nikonians.org.
Nikon®, Nikonos® and Nikkor® are registered trademarks of Nikon Corporation.