I have just recently bought an S95 and though my new YS-01 has not yet been delivered I was puzzled that Canon does not allow TTL auto strobe for this camera in manual I therefore installed CHDK to see if there was anything that could be done
I took my Sea and Sea YS-DX27 and set it so that the is no pre-flash cancellation
I set then the S95 to manual and fired force flash against the strobe and the YS-DX27 fired in return
I then put the camera in Aperture priority mode and then in the CHDK overrides I set the shutter speed to a set value of 1/250 same as I would do in Manual for a CFWA and shot again towards the YS-DX27 set to no-preflash and this time the strobe did not fire
I therefore set the strobe to cancel pre-flash and shot again, this time the YS-DX27 beamed as expected if there was a pre-flash
Conclusion by using CHDK in aperture priority or even better in Shutter priority and then setting the other parameter in the override you can have a pre-flash and trigger and external DS-TTL flash like the new YS-01
This is like having TTL in manual mode, not only with CHDK you can push the aperture to F16 so you can achieve an F16 1/250 TTL set up that should be ideal for CFWA
I wonder if anybody who is going into the water with an YS-01 can test my settings and report back. I have good reason to believe this set up should work
CHDK does not bring many functions to an S95 but some are useful:
I took my Sea and Sea YS-DX27 and set it so that the is no pre-flash cancellation
I set then the S95 to manual and fired force flash against the strobe and the YS-DX27 fired in return
I then put the camera in Aperture priority mode and then in the CHDK overrides I set the shutter speed to a set value of 1/250 same as I would do in Manual for a CFWA and shot again towards the YS-DX27 set to no-preflash and this time the strobe did not fire
I therefore set the strobe to cancel pre-flash and shot again, this time the YS-DX27 beamed as expected if there was a pre-flash
Conclusion by using CHDK in aperture priority or even better in Shutter priority and then setting the other parameter in the override you can have a pre-flash and trigger and external DS-TTL flash like the new YS-01
This is like having TTL in manual mode, not only with CHDK you can push the aperture to F16 so you can achieve an F16 1/250 TTL set up that should be ideal for CFWA
I wonder if anybody who is going into the water with an YS-01 can test my settings and report back. I have good reason to believe this set up should work
CHDK does not bring many functions to an S95 but some are useful:
- Real battery voltage
- Achieve apertures smaller than F8
- Zebra diagrams
- Zoom during video
