| Author |
Message |
    
Waynemel
Tinkerer
Username: Waynemel
Post Number: 463
Registered: 08-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, June 18, 2013 - 03:26 pm: | 
|
This is a general question really, but what are the usual causes of a slow moving meter needle? I have noticed on a few cameras that the needle moves slower than I would expect. Are there common reasons for this such as a corroded wire? |
Hi_country_flash
Tinkerer
Username: Hi_country_flash
Post Number: 46
Registered: 12-2012
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, June 18, 2013 - 04:13 pm: |
|
Tired electrons ?? |
Rick_oleson
Tinkerer
Username: Rick_oleson
Post Number: 1313
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, June 18, 2013 - 04:42 pm: |
|
Depending on the meter design, it might be slow reaction of the meter cells, low battery voltage, or dirt. |
Jon_goodman
Tinkerer
Username: Jon_goodman
Post Number: 53
Registered: 05-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 19, 2013 - 07:05 am: |
|
Or the needle may have somehow been bent so that it now rubs against the focus screen or indicator plate. |
John_shriver
Tinkerer
Username: John_shriver
Post Number: 110
Registered: 12-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 19, 2013 - 07:05 pm: |
|
Or the bearings on the meter movement could be too tight, or have gooey oil in them. (They would normally be dry jewel bearings.) |
M_currie
Tinkerer
Username: M_currie
Post Number: 303
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 19, 2013 - 09:15 pm: |
|
I think slow reacting meter cells may be part of it, as Rick suggests. I've noticed that some old CdS meters are slow at first, but get better and more accurate as you use them. I would not worry too much if the meter is accurate and if it returns to zero repeatably. |
