May I recommend bifocal glasses if not varifocals. I don't like the new caps but I can usually feel when to click them into place.OK, I have had cataracts, then cataract surgery, and can't really see things I'm holding that well. I can see very well but only at a fixed distance, of my computer screen. It makes shooting hard when I can't read the camera controls and can't see my subject well :-D But I can see perfectly in the viewfinder due to adjustable diopter.
ANYWAY, yes, I have just now studied a lens (at arm's length, where I can see it) and realize they have a smooth black stripe that must line up with the tiny red mark. So now I know how to cap them reliably. But I can't see the red dot nor the smooth black stripe unless I hold the things out as far away as I can. Fair enough, no surprise they're not catering to blind photographers! And I can put a day-glo yellow sticker on them.
But even if you know this mark has to line up, even if you can see them, you still have to DO it. You have to search for the red mark... search for the smooth stripe... THEN mount the back cap. In 25 years of using my EF system I never looked at the back caps. I have no idea how they work--because I didn't need to know. I hold the cap up, and turn a bit and it snaps on...
The serial number issue is pretty straightforward--I can see it in the EXIF data... I can see where it's written on the lens and actually I CAN read it, again, if I hold the lens at arm's length...
Upvote
0