MR-44 adapter, for my Konica Auto S3 - problems

[Cortexturizer]

So I bit the bullet and bought the MR-44 adapter from smallbatterycompany out of UK, first thought it wasn't working but then verified it does deliver 1.35v under load.

But... it makes ZERO difference in any of my 3 cameras: Auto S3, Hi-Matic 7S II and Olympus 35 RD. The meters read absolutely the same as with the LR44 which is your usual suspect small 1.5 alcaline.

I get absolutely the same readings.

Maddening stuff. Especially considering the price of the adapter.

Why do you guys think this is the case?

Also, I have actually discovered that my S3 (very recent acquisition) underexposes by 2 stops anyway, regardless if it's light meter is fed with 1.5 or 1.35v.

Also - it seems that EVERY Auto S3 already has the diode installed in it's battery compartment from the factory - http://wkoopmans.ca/notebook/wp-content/uploads/2018/12/KonicaS3repair2.jpg

Mine does too, is it possible that Konica made them like this? I mean, if this is as such what would be my solution here - to install another diode in series?! OR just some other diode with higher voltage drop?

Cheers

 

[shawn]

If you are comfortable pulling the top off you can recalibrate the meter on the Auto S3. There is a fixed resistor near the meter that you can swap out to adjust the reading. It has been a few years but I think I reduced the resistance to increase the exposure.

The other option is to just set your film speed two stops lower.

Shawn

 

[Cortexturizer]

If you are comfortable pulling the top off you can recalibrate the meter on the Auto S3. There is a fixed resistor near the meter that you can swap out to adjust the reading. It has been a few years but I think I reduced the resistance to increase the exposure.

The other option is to just set your film speed two stops lower.

Shawn

Thanks Shawn!

I am comfortable with it I just am unable to find a spanner wrench that'll have the lower span limit of less than 10mm!!! Because I believe I need something like 8mm to be able to open the rewind top part thingy

 

[shawn]

I think I used a pair of pointed tip tweezers for mine.

Shawn

 

[Phil_F_NM]

My first small spanner was fashioned out of a cheap pair of kids scissors with the ends ground flat to blades.
Phil Forrest

 

[maigo]

Using side cutters, trim a paper clip into a U shape. Makes a narrow wrench for retaining caps and such.


Sent from my iPhone using Tapatalk

 

[Cortexturizer]

Great ideas for a DIY spanner wrench guys, much appreciated!