Attention please owners of Meoptas (Axomat 5a)

Discussion in 'Enlarging' started by Alessandro Serrao, Jan 3, 2005.

  1. Alessandro Serrao

    Alessandro Serrao Member

    Oct 20, 2004
    Rome, Italy
    :smile: I don't want to sell anything
    :smile: but last night I was in my darkroom printing. I never did pay attention to that table on the enlarger chassis, next to the coloumn. It has three coloumn (no pun intended!!!), one beta, one 50 and the last 30, and many rows.
    What the hell is this table?
    I've guessed that the 50 and 30 refers to the enlarger lens but what about beta?
    Is this an enlargement factor?
  2. GeorgesGiralt

    GeorgesGiralt Member

    Sep 16, 2004
    Toulouse, Fr
    Large Format
    Hi Alessandro !
    This table gives the height of the head for a given enlarging factor (or the reverse)
    Imagine you want to enlarge 10 diameters with a 50 mm lens, so you choose 10 in the Beta column, and read the figure horizontally in the 50 column. Next, elevate the head up to the figure indicated, and voila ! a 10 times enlargment. Of course, you must use the focusing device of the neg carrier to focus properly ,-)
    Once a given enlargment is done, reading the height of the column, one can calculate the exact enlargment factor, in order for say calculate the new exposure time if you plan to make a bigger print.