Re: jobo 4x5 film reel


FotoDave@aol.com
Sat, 09 Oct 1999 00:24:12 -0400 (EDT)


In a message dated 10/8/99 4:03:38 PM Pacific Daylight Time,
sanking@hubcap.clemson.edu writes:

> A brief summary of the types of drums available, and how they load, would
> be very instructive, for me sure, and for others I think.

Hi Sandy,

First, there is the "normal" drums and "normal" reels which are just like
typical film reels and drums, except that it can be loaded to the Jobo
machine for automated processing. Then there are print drums, which are drums
with "ribs." These are for making prints. The ribs are there to prevent the
the prints for completely laying flat against the wall of the drum. I find
that these print drums are good for making enlarged negatives but some have
reported problem with streaks along the rib when processing the film with
pyro. The 4x5 film reel works with normal drum or any drum. It allows 6 4x5
films to be processed at the same time.

I have never seen an expert drum, but the description says that it is like a
gun that it can load 6 bullets, that is, you can say that it has 6 drums
within a big drum; and I believe both the drums and the drum rotate, so you
get totally random agitation and thus perfectly even development. The
limitation of the expert drum is that the maximum size is 8x10.

Dave S



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