NatureScapes.net Forums

[font="Open Sans", Helvetica, Arial, sans-serif]Am I the only one who finds it necessary to tighten the screws on both sides of my teleconverter every week or so to prevent excess "play" in the contact of converter-to-lens and camera-to-converter?[/font]

[font="Open Sans", Helvetica, Arial, sans-serif]This is primarily related to tripod shooting with 500mm f/4 + 1.4x converter on a Sony a99ii body.[/font]

[font="Open Sans", Helvetica, Arial, sans-serif]I am wondering how others deal with this issue?  [/font]
[ul]
[li]What screwdriver gives you maximum leverage on these tiny screws?  [/li]
[li]Is there any risk of overtightening and stripping the threads?  [/li]
[li]Would Loctite (blue) provide a more lasting solution?[/li]
[/ul]

[font="Open Sans", Helvetica, Arial, sans-serif]Many thanks for your suggestions.[/font]

You need a JIS (Japanese Industrial Standard) screwdriver for most camera type screws.
Looseness is often caused when machine tools used to make the threads are not at precise tolerances , mostly when new (not worn out), IMO.
Be careful to use the proper threadlocker. Purple is recommended for small screws, e.g. eyeglass screws. I can’t find it on the Loctite site for some reason, though. I would recommend letting it dry thoroughly before attaching TC to lens to prevent any possibly fogging of glass from vapors of drying product.

http://henkeladhesivesna.com/blog/when- ... eadlocker/

http://www.tooldex.com/loctite-222ms-22 ... urple.html

Don’t overtighten to prevent stripping threads or shearing screw off.

Joe

Are you by any chance using a Minolta type 1 TC? They are much more torquey than type 2 or Sony's TC.

SantaFeJoe wrote:You need a JIS (Japanese Industrial Standard) screwdriver for most camera type screws.
Looseness is often caused when machine tools used to make the threads are not at precise tolerances , mostly when new (not worn out), IMO.
Be careful to use the proper threadlocker. Purple is recommended for small screws, e.g. eyeglass screws. I can’t find it on the Loctite site for some reason, though. I would recommend letting it dry thoroughly before attaching TC to lens to prevent any possibly fogging of glass from vapors of drying product.

http://henkeladhesivesna.com/blog/when- ... eadlocker/

http://www.tooldex.com/loctite-222ms-22 ... urple.html

Don’t overtighten to prevent stripping threads or shearing screw off.

Joe

Many thanks for your suggestions.

Mike in O wrote:Are you by any chance using a Minolta type 1 TC?  They are much more torquey than type 2 or Sony's TC.

No, it's the current Sony SAL-14TC.