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A simple impression on EOS M5

Started Nov 12, 2017 | User reviews thread
nnowak Veteran Member • Posts: 9,075
Re: A simple impression on EOS M5

lumenite wrote:

A simple impression on EOS M5

9. Image Stabilization. I do not understand why Canon wants IS to be ON always
for EF/EF-S lenses since M3. This is a clear design mistake.

This is due partially to the mechanical differences between EF-M lenses and EF/EF-S lenses.

When turned off, the IS system parks and holds position on an EF/EF-S lens.  The IS system in the EF-M lenses is built differently.  Without power, the IS mechanism just flops around.  Even if your "turn off" IS for an EF-M lens, the IS system is still powered and active just to hold the mechanism in a fixed position.

Whether it is sloppy software or cheap hardware, an M camera is always sending power to the IS system no matter if it is "on" or "off".  The only thing actually changing is whether the IS actuators are being commanded to move or hold.

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