Phottix Tetra

Phottix Aster

Phottix Strato

Phottix Atlas

Operating frequency

433Mhz

433Mhz

2.4Ghz

433Mhz (CE) 344Mhz (FCC)

Stated operating range

30meters

30meters

100meters

100meters

Battery source (receiver)

AAA X 2

CR2

AAA X 2

AA X 2

Battery source (transmitter)

23A 12V

23A 12V

AAA X 2

AA X 2

Sync speed (Camera dependent)

1/160-1/250

1/160-1/250

1/160-1/250

1/160-1/250

Number of channels

4

4

4

4

Triggering modes

Radio frequency only

W (wireless mode), via radio frequency
L (light mode), via optical trigger

Radio frequency only

Radio frequency only

TTL

NA

NA

TTL (only through
the transmitter on camera flash)

NA

Tripod mount (receiver)

Plastic

Metal

Metal

Metal

Hotshoe mount (receiver)

Plastic

NA

Plastic

Metal

Supported flash

Canon 580EXII
580EX, 550EX, 430EX,430EXII.
Nikon SB900, SB800, SB600, SB28
Nissin Di622 (Nikon), Di866
Most other flash models with center pin

Canon 580EXII
580EX, 550EX, 430EX,430EXII.
Nikon SB900, SB800, SB600, SB28
Nissin Di622 (Nikon), Di866
Most other flash models with center pin

Canon 580EXII
580EX, 550EX, 430EX,430EXII.
Nikon SB900, SB800, SB600, SB28
Nissin Di622 (Nikon), Di866
Most other flash models with center pin

Canon 580EXII
580EX, 550EX, 430EX,430EXII.
Nikon SB900, SB800, SB600, SB28
Nissin Di622 (Nikon), Di866
Most other flash models with center pin

Shutter release function (wired)

NA

NA

Yes

Yes

Shutter release function (wireless)

NA

NA

Yes

Yes