Question regardingcctv lens board

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Greetings all - new here.

 

Jumping right in;

 

1)... I have 9 exterior outdoor (48IR)cams set up residentially.

2)....Blew 3 of them up 1 week ago (long story).

3)....Some are 1/3'' others are 1/4''.

4)....Actual internal assembly is mounted to internal board with 2 screws and have/has a "screw-in" lens with set screw (assume for focus clarity).

5)....I however, do not recall what cams are which size as I neglected to record same.

6)....I have no video or IR board illuminations and cables and power supplies are good.

7)....Is there any way to determine what size lens is in any board as I detect no writing on the lens itself (chips are Sony).

....My intent is to change out the internal board (I have spare IR boards).

 

ANY and all assistance is greatly appreciated!

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WOW! ....This easy to stump the board/forum? ...GASP!