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Bernd Jendrissek

less info
215 reputation
14
bio website bpj-code.co.za
location Cape Town, South Africa
age
visits member for 1 year, 5 months
seen Feb 19 '13 at 16:12

Oct
29
awarded  Yearling
Dec
3
accepted What grease to use on zoom drive gears?
Dec
3
comment What grease to use on zoom drive gears?
In the end I went with "cheap stuff that's likely good enough". Some sort of silicone stuff from a RC airplane friend. No point shelling out half the price of a new camera for a tube of unobtainium perfect lubricant!
Nov
7
comment What grease to use on zoom drive gears?
Yeah, wikipedia's page on boron nitride mentions that BN lubricants can be an alternative where the conductivity of graphite is a problem. I assume it relates to that. But it's also irrelevant to lubricating plastic gears :)
Nov
7
answered Is it possible for a hobbyist to create a lens element?
Nov
7
awarded  Teacher
Nov
7
answered What grease to use on zoom drive gears?
Nov
3
asked What grease to use on zoom drive gears?
Oct
31
comment How many moving elements in a Canon A490?
I later saw there were two solenoids. As you predicted, one controls the shutter (I didn't know digital cameras had or needed these!) and the other a secondary aperture. Image for the curious.
Oct
30
awarded  Scholar
Oct
30
accepted How many moving elements in a Canon A490?
Oct
30
comment How many moving elements in a Canon A490?
Couldn't help myself, opened the lens barrel further. Your ID is confirmed: the flex goes to a solenoid. I guess that's your aperture drive!
Oct
29
comment How many moving elements in a Canon A490?
Thanks! Although the zoom and auto-focus are a bit different, just your pointing out that the flex going in might be for the aperture, is enormously helpful.
Oct
29
awarded  Supporter
Oct
29
awarded  Student
Oct
29
asked How many moving elements in a Canon A490?