Focomat V35 autofocus for different easel height?

[butterflydream]

I started using my new Focomat V35 and have a problem with autofocus.

I have LPL easel and Ganz speed easel. Their heights are different from each other (Ganz is higher). With LPL easel the autofocus works perfectly but with Ganz not so much.

I thought this is because of the height of easel, and I tried adjust the height of column by turning the crank on the top of it. I simply raised the column by the height difference of the easel, but it didn't work. After spent 1/2 hour or so with trial-and-error method, I made no success.

What possibly did I do wrong?
Is there any easier / systematic way to adjust this?


TIA

 

[clogz]

Did you measure the height of the easel correctly i.e.from top of the enlarger's baseboard to the top of the easel?

Hans

 

[Claire Senft]

If you shim the speed easel so that the paper heigth is the same as the other easel the problem will disappear.

 

[butterflydream]

Thanks for the replies.

I tried again. I found it is much more sensitive than I thought - just a portion of a crank turn made difference. And I found another reason - my speed easel was not flat but slightly bent.

Finally, I found shimmin the easel to make the same height is much better way than adjusting column height each time I change the easels.

Thanks a lot.