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A simple impression on EOS M5

Started Nov 12, 2017 | User reviews thread
OP lumenite Senior Member • Posts: 1,207
Re: A simple impression on EOS M5

nnowak wrote:

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.

However, what we regret is that the original M works fine. Something has changed since M3.

In addition to IS operation, AF/MF switch works differently between EF-M and EF/EF-S. It is perhaps because EF/EF-S lenses have dedicated hardware switches for them, but EF-M lenses have no external switches as you implied.

 lumenite's gear list:lumenite's gear list
Canon EOS-1D Canon EOS M Canon EOS M5 Canon EF 28mm f/1.8 USM Canon EF 50mm F1.4 USM +7 more
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