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Why should i buy a Nikon Flash over 3rd party ones? wich one do you like the most?
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<blockquote data-quote="WayneF" data-source="post: 424383" data-attributes="member: 12496"><p>The TTL flash itself really does not play a part in determining exposure. Instead, the camera meter is in control, and it sets a power level in the flash. Not an absolute level (flash model and capability is unknown), but camera meters a TTL preflash, and then requests more stops of power to be the final exposure. The flash merely complies, assuming it has enough power to do it.</p><p></p><p>Auto ISO does not work (stays at Minimum) if a Manual mode flash is detected, or if Commander is used.</p><p></p><p>For many Nikon camera models, Auto ISO only meters for the ambient, so the poor flash picture is always working into a high ISO environment (dim places where we use flash). </p><p></p><p> There are exceptions though, three big variations. </p><p></p><p>1. The older cameras (Until the D300S, 2009) always stayed at Minimum ISO if flash was detected in use (simply because, we are using flash instead). It was possible that Auto ISO could increase, but only in situations when the maximum flash power was not sufficient. That is a vague ballpark, flash model and capability was not known.</p><p></p><p>2. Then the D300S until just before the D800 always simply metered the ambient for Auto ISO, without regard for the flash. The TTL BL flash became just fill flash (into an orange incandescent setting - Nikon added filters for the flash). It seems a good plan to turn Auto ISO off for flash in these models.</p><p></p><p>3. Then the last few models, from D800 and after (2012), realized the error, and now the last few models limit Auto ISO to only a two stop increase if flash is detected present (two stops of ISO is about right for bounce flash).</p><p></p><p>Auto ISO of course tries to make the ambient exposure right without a flash. It is about ambient.</p><p></p><p>You can easily see which Auto ISO version your camera uses. </p><p> Indoors (some dim situation), with flash turned off, take a camera meter reading of the scene, and check the ISO. Auto ISO will of course be high</p><p> Then reach up and turn the flash on, and take another reading. Unless camera M mode or Rear Curtain sync, this probably increases shutter speed to 1/60 (additional demands on ISO).</p><p></p><p>The three cases will be:</p><p></p><p>1. Minimum ISO (ignores Auto ISO) - Older models, D300 and older. We're using flash instead, and don't need/want maximum ISO.</p><p>2. ISO stays high - D300S and after. Auto ISO is NOT about the flash. Auto ISO is instead of the flash.</p><p>3. ISO limited to two stops (4x ISO) above minimum. Perhaps less in brighter scenes. - Last few new models, since D800. Flash is taken into account.</p></blockquote><p></p>
[QUOTE="WayneF, post: 424383, member: 12496"] The TTL flash itself really does not play a part in determining exposure. Instead, the camera meter is in control, and it sets a power level in the flash. Not an absolute level (flash model and capability is unknown), but camera meters a TTL preflash, and then requests more stops of power to be the final exposure. The flash merely complies, assuming it has enough power to do it. Auto ISO does not work (stays at Minimum) if a Manual mode flash is detected, or if Commander is used. For many Nikon camera models, Auto ISO only meters for the ambient, so the poor flash picture is always working into a high ISO environment (dim places where we use flash). There are exceptions though, three big variations. 1. The older cameras (Until the D300S, 2009) always stayed at Minimum ISO if flash was detected in use (simply because, we are using flash instead). It was possible that Auto ISO could increase, but only in situations when the maximum flash power was not sufficient. That is a vague ballpark, flash model and capability was not known. 2. Then the D300S until just before the D800 always simply metered the ambient for Auto ISO, without regard for the flash. The TTL BL flash became just fill flash (into an orange incandescent setting - Nikon added filters for the flash). It seems a good plan to turn Auto ISO off for flash in these models. 3. Then the last few models, from D800 and after (2012), realized the error, and now the last few models limit Auto ISO to only a two stop increase if flash is detected present (two stops of ISO is about right for bounce flash). Auto ISO of course tries to make the ambient exposure right without a flash. It is about ambient. You can easily see which Auto ISO version your camera uses. Indoors (some dim situation), with flash turned off, take a camera meter reading of the scene, and check the ISO. Auto ISO will of course be high Then reach up and turn the flash on, and take another reading. Unless camera M mode or Rear Curtain sync, this probably increases shutter speed to 1/60 (additional demands on ISO). The three cases will be: 1. Minimum ISO (ignores Auto ISO) - Older models, D300 and older. We're using flash instead, and don't need/want maximum ISO. 2. ISO stays high - D300S and after. Auto ISO is NOT about the flash. Auto ISO is instead of the flash. 3. ISO limited to two stops (4x ISO) above minimum. Perhaps less in brighter scenes. - Last few new models, since D800. Flash is taken into account. [/QUOTE]
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Why should i buy a Nikon Flash over 3rd party ones? wich one do you like the most?
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