Olympus UK E-System User Group
Olympus UK E-System User Group

Join our unique resource for Olympus Four Thirds E-System DSLR and Pen and OM-D Micro Four Thirds photographers. Show your images via our free e-group photo gallery. Please read the e-group.uk.net forum terms and conditions before posting for the first time. Above all, welcome!


Go Back   Olympus UK E-System User Group > Cameras, lenses and system accessories > Accessory talk > Flash

Flash FL-related discussions can be found here.

Reply
 
Thread Tools Display Modes
  #1  
Old 30th March 2010
johnwb johnwb is offline
Senior Member
 
Join Date: Aug 2008
Location: West Sussex
Posts: 297
Thanks: 9
Thanked 12 Times in 12 Posts
Likes: 5
Liked 14 Times in 11 Posts
Help: Shepherd FM990 Flash/Light Meter

I have one of these units which seriouly needs re-calibration. I believe it could be two stops out in the general reading. (The light value it suggests is 2EV higher than it should be.)
The main circuit board inside shows 4 variable resistors in a square formation. Can the reading be adjusted through altering these resistors? If so which way? I am not sure how to tweak these to give a truer reading.
Does any forum member have knowledge of these units? Please advise.

John WB
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
f1.8 in low light Radar Foto Fair 5 15th March 2010 01:02 AM
510 does low light gib48189 Foto Fair 8 14th December 2008 11:43 PM
How the light changes tlove Foto Fair 2 23rd November 2008 02:37 PM
Last light: Almost there snaarman Foto Fair 7 22nd November 2008 08:00 AM
light and wet PeterD Foto Fair 4 13th January 2008 11:18 PM


All times are GMT. The time now is 12:02 AM.


The Write Technology Ltd, 2007-2019, All rights reservedAd Management plugin by RedTyger