A simple impression on EOS M5

lumenite wrote:

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.

Yes, both M and M2 worked "properly".  Both of those cameras also used the EOS DSLR base firmware.  Since the M3, the firmware has been Powershot based.  No one has bothered to implement the necessary EOS code into the Powershot base.  My guess is it is a cost cutting move.  Without the necessary EOS code, the base Poweshot firmware can be more universal for all Powershot cameras.  Canon could fix the problem, but they would need to spend the extra money to develop and maintain a more dedicated EOS M fork to the firmware.

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.

Another cost-cutting move.