Originally posted by zbrueningsen By the way - the hood that I prescribed in the original post locks in place for the 50-135.
If it is modeled accurately to the ET-74 it is supposed to be modeling, then I don't see how.
That is also the issue with this JJC hood.. it doesn't click into place and thus is not oriented 100%.
This appears to be due to the length of the grooves. I looked at two pentax lenses and OEM hoods (55-300 WR and DA* 16-50) and they have the same design.. counter grooves with flat edges.. once it hits the end of the groove, it catches the flat, counter groove edge and thus you get that click into place.
The Canon hoods don't appear to be structured in the same manner. Well.. It is a similar concept but they use these fat 'humps' in between where the grooves end instead of a gap and then a flat edge as seen on the Pentaxes.
I will try to measure them and see if they can be shaved down.. fun arts and crafts project.
---------- Post added 09-09-15 at 08:04 PM ----------
Actually, from the promo shot on Amazon, the Movo hood might not actually be modeled in the Canon manner.. zbrueningsen, would you be willing to take a photo of the mount end of your ET-74 clone and share here please? I'd like to see a more detailed image of the locking mechanism (the spot where the grooves reverse edges).