Comments on: Canon Speedlite 430EX with Sto-Fen Omni-Bounce http://www.digitalrelish.net/39/canon-speedlite-430ex-with-sto-fen-omni-bounce/ Focusing on Digital Photography Fri, 05 Dec 2008 01:56:48 +0000 http://wordpress.org/?v=2.6.5 By: Ian http://www.digitalrelish.net/39/canon-speedlite-430ex-with-sto-fen-omni-bounce/#comment-62 Ian Fri, 13 Jun 2008 11:20:21 +0000 http://www.digitalrelish.net/?p=39#comment-62 Thanks for th reply. Turns out that it the difficulty experienced was due to flash strength. Diffuser seems to take out about 1 stop of light under current testing circumstances, otherwise it seems o.k. Thanks for th reply. Turns out that it the difficulty experienced was due to flash strength. Diffuser seems to take out about 1 stop of light under current testing circumstances, otherwise it seems o.k.

]]> By: Will http://www.digitalrelish.net/39/canon-speedlite-430ex-with-sto-fen-omni-bounce/#comment-49 Will Mon, 09 Jun 2008 20:36:31 +0000 http://www.digitalrelish.net/?p=39#comment-49 Hi Ian, What flashgun are you using with your 450D? With Canon Speedlites, the flash should automatically vary the flash output so that sufficient light reaches the sensor for a correct exposure. As long as your flash is powerful enough to offset the light-dampening effect of a diffuser then I wouldn't expect you to see any problems with under-exposure. It could be that you're using a flashgun that's incompatible with the 450D's E-TTL II flash exposure system or perhaps it's just not capable of outputting enough light energy to meet the required exposure setting. What kind of environment are you shooting in at f/11? Where's your diffuser sending the light? Are there light coloured walls and ceiling nearby to bounce indirect light towards your subject? Hi Ian,

What flashgun are you using with your 450D?

With Canon Speedlites, the flash should automatically vary the flash output so that sufficient light reaches the sensor for a correct exposure.

As long as your flash is powerful enough to offset the light-dampening effect of a diffuser then I wouldn’t expect you to see any problems with under-exposure.

It could be that you’re using a flashgun that’s incompatible with the 450D’s E-TTL II flash exposure system or perhaps it’s just not capable of outputting enough light energy to meet the required exposure setting.

What kind of environment are you shooting in at f/11? Where’s your diffuser sending the light? Are there light coloured walls and ceiling nearby to bounce indirect light towards your subject?

]]> By: Ian http://www.digitalrelish.net/39/canon-speedlite-430ex-with-sto-fen-omni-bounce/#comment-48 Ian Mon, 09 Jun 2008 12:16:20 +0000 http://www.digitalrelish.net/?p=39#comment-48 Very interesting. Another thing apparently against using the diffusers is that it seems to muck up the exposure if you manually set the aperture. Camera - Canon 450d. Setting the aperture at f11 for depth of field - subject fairly close - about 2.4m or 8'. Without diffuser - nice shot. With diffuser - underexposed by about 4 stops. Do you have any explanation for this. Is there something that I am missing? Very interesting. Another thing apparently against using the diffusers is that it seems to muck up the exposure if you manually set the aperture. Camera - Canon 450d. Setting the aperture at f11 for depth of field - subject fairly close - about 2.4m or 8′. Without diffuser - nice shot. With diffuser - underexposed by about 4 stops.

Do you have any explanation for this. Is there something that I am missing?

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