Ittl and ND filter

[randy_kayle]

<p>I have a D90, and SB-600, and 800.</p>

<p>If I use a ND filter to obtain wide apterture, will the flash atomaticly compensate for the ND filter in front with ITTL?</p>

[vinh]

<p>It should, after all TTL = through the lens, which means the light being measured will pass through the ND filter.</p>

[peterafle]

<p>Tell us more about what you're doing -- why not just dial down the flash output and dispense with the filter altogether?</p>

[randy_kayle]

<p>Hi Pete,<br />I',m trying to use flash in bright sunlight with a wide aperture to knock the focus out from the backround. I know I can use FP High Synq, but the power is greatly diminished.<br>

Limmitation with 200 of a sec with flash.</p>

<p>I know how using the old film cameras and manual flash, but was wondering on the Ittl Flashes..</p>

<p>Thank you for your help.</p>

[mark liddell]

The metering system should deal with the ND since it is metering through the lens. Variable ND filters may be more susceptible to metering issues though but I have no had any yet. I guess you'll need to try it out and see.

 

I have always found ND filters a much better alternative than FP sync as the power loss is massive.