Create a name for the pool and set the network. I named this pool CAMERAPOOL

set access address-assignment pool CAMERAPOOL family inet network 10.9.5.0/24

Set the range of addresses you are going to hand out via dhcp

set access address-assignment pool CAMERAPOOL family inet range CAMERA-RANGE low 10.9.5.10
set access address-assignment pool CAMERAPOOL family inet range CAMERA-RANGE high 10.9.5.100

Set the domain name

set access address-assignment pool CAMERAPOOL family inet dhcp-attributes domain-name mydomain.com

Hand out some name servers

set access address-assignment pool CAMERAPOOL family inet dhcp-attributes name-server 94.140.14.14
set access address-assignment pool CAMERAPOOL family inet dhcp-attributes name-server 94.140.14.15

Set the default gateway. This is usually the same IP address on the interface of the SRX

set access address-assignment pool CAMERAPOOL family inet dhcp-attributes router 10.9.5.1

set up a couple of reservations

set access address-assignment pool CAMERAPOOL family inet host FRONTDOORCAM hardware-address ec:71:db:99:59:17
set access address-assignment pool CAMERAPOOL family inet host FRONTDOORCAM ip-address 10.9.5.12
set access address-assignment pool CAMERAPOOL family inet host UNDERDECKCAM hardware-address ec:71:db:c4:42:ce
set access address-assignment pool CAMERAPOOL family inet host UNDERDECKCAM ip-address 10.9.5.11

Tested on version 15.1X49-D211