Lens shake from copal 3?

[AtlantaTerry]

Thanks for all the responses, much appreciated. I'll try the light and mirror trick.... But I think some controlled tests on film will yield some results, I just need to think of something that might also yield a nice picture.
In response to some of the points made;
- I use the largest gitzo carbon fibre tripod, often weighted from the hook. Until recently I've been using the basic sinar head, before that the manfrotto 450(I think it was) and now I have the monster manfrotto- whatever the model is. All solid stuff.
- I've only used the sensitometer on the sinar, a some what rickety but still solid P. And the iPhone was on the film end.
- maybe it is of no concern... It could be happening after the exposure....
- I'll run some tests on the canham too.
- never had the issue with the 4x5 lenses which are all copal 1s.
- maybe I'm OCD and it has no bearing on the final result which is.... Shot on color neg, sometimes 400asa pushed..

Regards.

OK, it has been almost a month. What are the results of the laser and mirror test?

[Nathan Potter]

A simple test I have used when doing precise scientific photography is to open the shutter on T setting and expose using electronic flash. This gives an image on film which has eliminated all possible sources of camera, tripod and lens vibration. It's really a check of the "system" vibration.

I like the laser and mirror approach also.

Nate Potter, Austin TX., Holliston MA.