Canon t90 data memory back 90

slx

Member
Joined
Mar 1, 2013
Messages
13
Format
Medium Format
Hi, I'm looking for information about the data memory back of the canon t90. I'm not able to find a manual on the internet, anybody knows how it works?
(I'm not interested in the connection to a computer, only the "stand alone" functions).
Many thanks for help!
 

John_A

Member
Joined
May 25, 2014
Messages
65
Format
35mm

https://groups.google.com/forum/m/#!topic/rec.photo/Y9wYme4z7ZQ

Personally I find the computer connection kit rather interesting, very hard to find, stored the data on audio cassettes, and only worked with a long gone early computer system standard called "msx".
In other words, no hopes of any practical use today, watsoever.. But still fascinating
 

John_A

Member
Joined
May 25, 2014
Messages
65
Format
35mm
From what I understand the mbd-90 doesnt imprint exposure info on the film (pre digital exif?). Was there ever a data back for fd mount cameras that had that capability?
To my knowledge, minolta was first with the cool looking program back super 90/70 for maxxum 7000/9000, with nikon a few years later with the mf-21 for the f801..
 
Last edited:

AgX

Member
Joined
Apr 5, 2007
Messages
29,973
Location
Germany
Format
Multi Format
I have to correct you. The DMB is a standard data-back plus the ability to sent stored data via an interface to a computer.

There is a secand data-back, the Command Back, that next being a standard data-back has the ability to realease the shutter at predetermined time and program.
 

John_A

Member
Joined
May 25, 2014
Messages
65
Format
35mm
All corrections are welcome

What I meant with the above, somewhat unclear post, is that minolta was probably first (1985) with a slr back that could imprint the shutter time and aperture number directly onto the film, with nikon second (1986-7?).
As I understand it, neither the canon mbd or command back e1, or any other back for the fd mount system could do this, correct?

Ill be happy if Im wrong..
 

AgX

Member
Joined
Apr 5, 2007
Messages
29,973
Location
Germany
Format
Multi Format
Yes, I misunderstood you. When I said "standard data-back" I meant that they imprint only time, date or a number.
 
OP
OP

slx

Member
Joined
Mar 1, 2013
Messages
13
Format
Medium Format
Hi, thank you, I downloaded the manual and now everything is clear.
I can confirm that the back don't imprint anything on the film, other than date/time/frame number.
It's possible to read out directly on the back the data of the last 150 (or 350, with basic information only).
Really useful is the possibility to read fastly the data if the last shot. For instance after a multispot metering it's then possible to retrieve the setting to be used in manual mode for further shots in the same light conditions.
All in all I'm really positively impressed by the t90.
 
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…