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Megadap & 100-400mm GM & Auto ISO minimum shutter speed??

  
 
MikeEvangelist
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p.1 #1 · Megadap & 100-400mm GM & Auto ISO minimum shutter speed??


Just began using the Megadap ETZ21 PRO+ on a Zr6iii with the 100-400mm GM and already hit a challenge.

On my Sony's I would typically use aperture priority and allow the camera to set the shutter speed based on the focal length. I always set the auto ISO function to use 'faster' shutter speeds. I set the Nikon the same way, setting ISO sensitivity>Minimum shutter speed to 2X. But the Nikon set the shutter to 1/60-second, at any zoom setting, no matter what I do. Does the auto sensitivity feature not get the data from the Megadap? Or what am I doing wrong?



Aug 26, 2025 at 07:39 PM
MikeEvangelist
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p.1 #2 · Megadap & 100-400mm GM & Auto ISO minimum shutter speed??


Well...I think I figured it out. Looks like you can't have the camera choose the minimum shutter speed based on the lens focal length if you're shooting High+ speeds. Dang.

This means, unless someone can suggest a better alternative, that I have to manually set the ISO (and adjust it as needed) when using pre-capture.



Aug 26, 2025 at 09:15 PM







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