[rollei_list] Differences between ATL1000 and ATL1500
- From: "Austin Franklin" <austin.franklin@xxxxxxxxxxx>
- To: <rolleiusers@xxxxxxxxxxxxxxx>, <rollei_list@xxxxxxxxxxxxx>
- Date: Wed, 11 Jun 2008 14:08:04 -0400
From my old notes (most info was directly from a very technically savvy guy
at Jobo):
Essentially the ATL-1500 is the same as an ATL-1000 with several newer
features. Their troughs are identical, so their capacities are the same; 5
rolls 35mm, 3 reels of 120/220, 2 reels of 4x5".
There were several generations of ATL-1000's. The first two did NOT control
the temperature of the BW processes. The third generation could heat it to
24C, but none of them could cool the ATL-1000. There is NO COOLING
CAPABILITY in any ATL-1000 or ATL-1500 (nor in any ATL-500 or 800 for that
matter.) They have only a single water
connection which serves to supply water both for the water trough and also
for the
washing of the film.
The third generation ATL-1000 DID have temperature control (heating) for BW
processing at 24C, the same as the current ATL-1500's have. You can
recognize this version of the ATL-1000 since it has a 4th bottle time
programmed in for hypo clearing agent. The earlier versions only had 3
bottles programmed for developer, stop bath and fixer. The third generation
version CAN be easily converted to an ATL-1500. The two earlier versions
require significant changes to circuit boards that make it complicated and
expensive to convert.
On the ATL-1000 you could adjust the overall process times by plus or minus
2-1/2, 5, 10 or 20%, but essentially this was adjusting the speed of the
internal clock, so it affects ALL the timed steps by this percentage. At
first thought that sounds bad, but in reality, all the process times were
carefully selected, so there were NO steps which became too short or too
long, and therefore they worked really well.
For BW film processing, the ATL-1000 can have 44 different processing times,
between 4 and 16 minutes, by applying the different percentages. With the
ATL-1500, you get real programming control. You can change the time on ANY
step from 30 seconds to 30 minutes in 5 second increments (under 10 minutes
total time per step) and in 10 second increments for any time over 10
minutes. This gives you the ability to program virtually any time on any
step.
Regards,
Austin
---
Rollei List
- Post to rollei_list@xxxxxxxxxxxxx
- Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe'
in the subject field OR by logging into www.freelists.org
- Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with
'unsubscribe' in the subject field OR by logging into www.freelists.org
- Online, searchable archives are available at
//www.freelists.org/archives/rollei_list
Other related posts:
