Backfocus plug for 35mm adapters

Hey bob,

your little DIY sounds fantastic, but i followed all the instructions and seems i aint getting it to work for some reason. I do get a variable resistance between the base and the center between 4-5 KOHMS when adjusting the POT, but it seems that the plug doesnt override the camera, does nothing actually. Tested with camera both manual and auto focus. Any ideas or anybody else who has built one?

thanks,
stephen.
 
Stephen,

I would really check to see if is plugged all the way in. I sometimes have trouble with the plug on my HVXs. Also, you would know if it is plugged in because the camera will say that it is in manual mode.

Bob
 
bob you were right, needed an extra push, this thing sure is flimsy without a cover. just realised though my range is off so will have to experiment a little with the resistors. thanks!
 
Here's my version on Bob's original. I found a different type of 1K POT that can be adjusted with a small philips screwdriver to adjust the focus. I'ts in series with a 2.7K Ohm 1/2W resistor, enclosed in a 1/4" female jack case cut to size connected to a 1/8" right angle stereo jack. This can vary from camera to camera as Bob said. Doesn't obstruct the record button and works like a charm!

1199812431.jpg
1199812481.jpg
 
I dunno about that. its somewhat labor intensive. I'd need to know there's demand enough to do it. if you want one, pm me. if it turns out that people will buy enough (10+), ill make a batch and happily sell em. they'd have to go for about $50 or so to warrant that kinda work, though.
 
I'd happily pay 50 bucks. I've got babies on the way and an HV20 and D80 to figure out. No time for more tinkering!
 
Bob - I can't thank you enough for this. I made one of these today in about 3 hours, including experimentation and epoxying all the parts when I'd finished, and it is simply a brilliant thing. Furthermore, a few people have seen it, and now think I'm a genius, which is always nice, especially when it's not true. It cost me £3 in total as I had an old jack plug. Really people - in terms of an effort and cost to benefit ratio, this is the overall DIY winner by a mile for 35mm adapter users. God bless Bob!

Lucas
 
Lucas,

Glad to hear it worked out well for you. The backfocus plug and regular focus/iris/rec/pause/zoom control are the best DIY projects for HVX. They really expand the capabilities of the camera.
 
So did you guys above figure out how to only lock Zoom/Focus and leave on camera Iris available? Can you share the plans, I have 4 more weeks solid of 35 adapter shooting left and I'm tired of checking the settings between every take.
 
Seriously, who wants to make one for me (for money)? We just had twins and I barely have any time to mess with the camera itself, let alone building something for it. :)
 
You must log in or register to reply here.
Back
Top