Flash Compensation on F100

[danster]

Hi, fellow F100 users. Just wondering if flash compensation is possible on the f100. Manual doesn't seem to state so but I read some articles seem to imply this is possible.

Can anyone provide any guidance on this?

Thanks in advance!

[justarius]

I posed this question sometime back and was advised to shoot in M mode and use the Exposure Compensation button. The exposure compensation button basically act as the flash compensation button, and you shoot in M mode in order to input the correct exposure, and not use the one biased by your exposure compensation.

eg: set exposure compensation to -1/2 stop. This gives -1/2 stop of flash compensation. Camera meter suggests f8 1/250 as recommended exposure under exposure compensation, so set exposure to f8 1/180 to correct for the -1/2 stop bias. (I hope I explained this correctly!)

Of course, the easy way out is to simply buy a speedlight with a flash exposure compensation button...

[danster]

Are you saying by shooting in M mode the exp. compensation will control the output of the flash?

If so, an easier way might be to first meter for the ambient exposure w/o the flash then set the exp. comp. on the camera with the flash mounted?

Would this work?

Of course, the easy way out is to simply buy a speedlight with a flash exposure compensation button... [/quote]

True, but I like my SB-22s. Small and compact. The other flashes are huge.

[justarius]

hehe, you also using the same flash that I'm using on the same camera But I hopefully getting an upgrade soon... seeing a seller tomorrow.

Anyway, this is the way I think it works: the exposure compensation determines the base exposure you want (both flash and ambient). If you are in M mode however, you can manually over-ride this base exposure, but the camera doesn't know that, and would give you the 'correct' TTL exposure for whatever compensation you dial in. So ta-dah, you get to control the flash output.

Setting exp comp without correcting the exposure in M mode would result in the flash and ambient exposure being the same. Only in M mode can you override the exp comp.

[danster]

Sorry, am not sure I'm getting you right. Here's my understanding. Say before i mount the flash i meter the ambient exposure at say 1/30 at f4. Shooting in M, i set the exposure at 1/30 at f4. Then i mount the flash and dial in, say -1.7 of exposure compensation on the camera WITHOUT changing the exposure (ie. 1/30 at f4). Will this reduce my flash output by -1.7 stops?

Sorry if I've confused you but this is really interesting for me.

Sigh, or maybe i should fork out the extra dough for an SB-80dx after all....

[justarius]

Originally Posted by danster Sorry, am not sure I'm getting you right. Here's my understanding. Say before i mount the flash i meter the ambient exposure at say 1/30 at f4. Shooting in M, i set the exposure at 1/30 at f4. Then i mount the flash and dial in, say -1.7 of exposure compensation on the camera WITHOUT changing the exposure (ie. 1/30 at f4). Will this reduce my flash output by -1.7 stops? Sorry if I've confused you but this is really interesting for me. Sigh, or maybe i should fork out the extra dough for an SB-80dx after all....

According to my understanding and abit of non-objective testing, yes it will reduce your flash output by 1.7 stops.

hehe, just forked out for a sb-80dx today...

[danster]

Thanks for your help, man. Enjoy your new flash!