Comment about A7 etc added

README.md

@@ -14,7 +14,10 @@ The Arduino Uno can also be controlled by a PC using software such as PHD. Detai
 
 The Pi can also control a Canon DSLR, via an interface, to allow long exposure photographs.
 
-Sony A6000 can also be used for long exposure photographs and controlled by 3 methods...
+Sony A6000* can also be used for long exposure photographs and controlled by 3 methods...
+
+*Note although A6000 is tested I have also tested on a A7R4 so should work on several Sony models.
+If you want to try your camera download my Pi-A6000-Remote scripts and try them. Connect an IR led to gpio pin number 36.
 
 1) Modifying Sony RM-SPR1 remote button (See Sony.txt and related photos) with extra FOCUS control gpio added (pin 23). 
 2) Use of Infra Red diode to a gpio and Sony RMT-VP1 receiver..