EEVblog #849 - Sony E-Mount Camera Lens Teardown - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: February 08, 2016, 11:02:45 pm
content: What's inside a Sony SELP1650 compact zoom E-Mount camera lens?How does the zoom mechanism workHow does the Sony Optical Steadyshot image stabilisation system work?http://www.sony.com.au/product/selp1650

author: max666
author_rank: Frequent Contributor
timestamp: February 09, 2016, 03:25:54 am
content: Awesome stuff! Great teardown!

author: daqq
author_rank: Super Contributor
timestamp: February 09, 2016, 08:48:57 am
content: Thanks Dave for the teardown.Could someone guess at the function of the part in the picture? It's like a pad for a part, but it's connected. There are more of them on the board. It's not a test pad (unless it's an unpopulated pad for a development test point), so, why?

author: G7PSK
author_rank: Super Contributor
timestamp: February 09, 2016, 12:02:34 pm
content: The groove cut in the sleeve is an axial cam not a tread or worm.

author: plazma
author_rank: Frequent Contributor
timestamp: February 09, 2016, 02:50:22 pm
content: Quote from: daqq on February 09, 2016, 08:48:57 amI use these in designs. It's a 0R resistor that can be cut for measurements/debugging and can be replaced with a solder bridge or resistor afterwards.

author: Fungus
author_rank: Super Contributor
timestamp: February 09, 2016, 03:01:30 pm
content: I've pulled stuff like this apart before.The mechanics always amazes me, I have no idea how they design that sort of stuff, It seems impossible.

author: djQUAN
author_rank: Frequent Contributor
timestamp: February 09, 2016, 03:18:58 pm
content: Quote from: daqq on February 09, 2016, 08:48:57 amWhere I used to work, we usually add 0 ohm resistors in series with data lines and change this to ones with resistance values (or ferrite beads) if there are any problems during EMC evaluation. If it already passes with the 0 ohm resistor, in the later revisions of the PCB, the pads will simply be bridged with a track to save cost on the part itself and the cost of mounting it.

author: Fungus
author_rank: Super Contributor
timestamp: February 09, 2016, 04:09:51 pm
content: Quote from: wilfred on February 09, 2016, 09:06:48 amNah, this is last Tuesday's video, a week late.(A stopped clock is right twice a day...!)

author: PA0PBZ
author_rank: Super Contributor
timestamp: February 09, 2016, 07:41:53 pm
content: Quote from: plazma on February 09, 2016, 02:50:22 pmBut the pads are already connected, they sit on a common trace so clearly whatever component you put on there does exactly nothing.

author: Fungus
author_rank: Super Contributor
timestamp: February 09, 2016, 07:45:41 pm
content: Quote from: PA0PBZ on February 09, 2016, 07:41:53 pmLuckily there's no component on it. That will save money.

author: PA0PBZ
author_rank: Super Contributor
timestamp: February 09, 2016, 07:58:42 pm
content: Quote from: Fungus on February 09, 2016, 07:45:41 pmReading plazma's reply again I think it means cutting between the pads, which makes sense but not something I'd like to try on a flex pcb.

author: AF6LJ
author_rank: Unknown
timestamp: February 09, 2016, 08:58:01 pm
content: That's really Cool Dave.

author: Starman
author_rank: Contributor
timestamp: February 09, 2016, 09:42:39 pm
content: Maybe you could hook up the image stabilizer portion to a joystick or linear slide pots, and use it as an electrically movable microscope stage !

author: max_torque
author_rank: Super Contributor
timestamp: February 10, 2016, 08:36:10 pm
content: Two questions / comments:1) the tooling for those precision injection moulded parts must have cost $$$$ ! (especially the axial cams / tracked rings)2) did you get it all back together again, and does it now work??

author: AF6LJ
author_rank: Unknown
timestamp: February 11, 2016, 01:15:50 am
content: Quote from: Starman on February 09, 2016, 09:42:39 pmHay;That's a cool idea.

author: ivaylo
author_rank: Frequent Contributor
timestamp: February 11, 2016, 06:16:25 am
content: The few times I've tried to "service" lenses I failed miserably. The one I was sure I can clean turned out to have a six threaded focusing barrel so focus went to hell. I did try all six ways, but it was a film camera and developing the film just showed it was way off. Not to mention the fun of chasing spilled iris leaves. It was an underwater lense, glad the shop could fix it after me. Those guys have assembly guides, specialized tools, focusing stands and what not.

author: Oskar
author_rank: Newbie
timestamp: February 19, 2016, 11:48:34 pm
content: I really enjoyed this teardown. Lens are amazing. I've taken a few apart, all were broken to begin with. Tons of fun.Thanks again for the unique teardown!Oskar

author: max666
author_rank: Frequent Contributor
timestamp: February 20, 2016, 09:21:40 am
content: Quote from: Oskar on February 19, 2016, 11:48:34 pmSuuuure! That's what they all say

author: PeterL
author_rank: Regular Contributor
timestamp: February 25, 2016, 11:57:19 am
content: I stumbled upon this Youtube channel:https://www.youtube.com/channel/UC2z5c8YEA5dQLi36DYpsFJgHe only has a few video's yet, but he really does a really good job of tearing down and fixing camera's and lenses. He really knows what he's doing, and let's the viewer learn along.