Viewing profile — ExAr

Thanks for pointing this out! I had no idea something like this would happen by filling in a comment box in the original post window.

This article presents the inventive solutions Canon has found to shoot beams of light into the camera's viewfinder in order to light up individual autofocus points. Six different a…

To all tech-savvy friends: Here is an illustrated story about 33 years of Canon autofocus detection history. From one AF point to 191 AF points!

Thanks for following this up. I have checked the video you've linked. My suggestion would be that this whooshing noise is not generated by the piezoelectric part but rather from th…

As far as I know, Canon controls a large part of the supply chain and has numerous factories to manufacture quality-critical parts (especially their lenses, zoom mechanisms, and ba…

This sounds like a fun gadget. Just out of curiosity, do you still have that demo kit, and would you consider selling it? :-)

What an absolute masterpiece this website is! Thanks for sharing.

Thanks nayuki for the detailed comment and positive feedback. Thanks for pointing out the missing EF-M, I am going to add that during the next polishing round. With regards to USM …

Hi fooker, thanks for your feedback. I haven't heard of this issue before, but a quick research showed me that other people have (similar) AF problems with longer lenses on an R6 I…

Thanks for your feedback. Until now I have never blogged about the creation of these illustrations, but it's a nice idea, there is tons of "behind-the-scenes" material. With regard…

On the ring-type USM motor you can click on some images to see animations running. But there is no additional interactivity at this point.

Cool videos, thanks! The driver shown in the first video is indeed a piezoelectric actuator, but not the type Canon uses in their lenses. The driver shown in the second video is pr…

Much appreciated :)

You are right, I can change that.

turnsout Thank you very much. Trying to understand complex things has always fascinated me. Indeed it takes a lot of time (rd. 1.600 hours for the complete series of Canon lens cha…

Thank you for your feedback! And great that you've found the other chapters - most of them are already complete. Enjoy!

Sorry to hear that. I tried on my Firefox and it worked. Not sure what might cause that issue.

Hi there! I have written an e-book about all autofocus motor types used in Canon EF & RF lenses from the past 40 years.

LOL - It should be back online again.