Hier noch 'mal das Problem in voller Länge:
http://www.jr-worldwi.de/photo/ist_DS_internalflash.html#SCA3000
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The Metz SCA 3000 and SCA 3002 systems
The SCA 3000 system superseeded the SCA 300 system in the 1990, AFAIK. It offers ISO transmission, motor-zoom reflectors and some other features more. The line up of Metz flashes is very vast and philzucker has written up a nice overview, giving you a head start: forums.dpreview.com/forums/read.asp?forum=1036&message=21981910.
Around 2004 or therabouts, Metz introduced the SCA 3002 series which among other things offers updateable software in the adapter. Currently the 3702 adapter is the adapter for Pentax and should be used on the DS in second-curtain mode. Users have found that it works in standard first-curtain mode, too. More info in this thread by philzucker: forums.dpreview.com/forums/read.asp?forum=1036&message=15019298
I own the predecessor to the 3702, the SCA 3701. With my Metz 40 MZ-3 it offers ISO transmission and motor zoom, first and second curtain flash and the flash exposure compensation trick. TTL flash still only works correctly for ISO 200 and ISO 400, but you just have to dial in -1 flash exposure compensation for each ISO step above 400 and you are ok. This means that ISO 3200 will not work, because for ISO 1600 you already need the full -2 flash compensation the DS offers. I can only recommend the 3701 if you are really not willing to spend the extra money for the 3702. One benefit of the 3702 is the integration with newer flashes like the 54 MZ-3: The 3701 will not fit those (physically), whereas the 3702 will fit all SCA 3000 flashes.
Recently, we found an issue with Metz's 3701 and 3702 series adapter in Auto mode, with the flash tilted and at high ISO, which results in very inconsistent exposure: forums.dpreview.com/forums/read.asp?forum=1036&message=18670011 / forums.dpreview.com/forums/read.asp?forum=1036&message=23002010. The newer 3702 adapter does have less of this problem: It works nicely in Auto mode with the SCA 3002 flash 54-MZ (thanks to Richard and awaldram) but it does still not work with the SCA 3000 flashes like the 40MZ (thanks to Richard and awaldram, confirmed by myself and PhilZ). Apart from the 3702, using a basic 301 centre-contact or 372 analog TTL adapter will allow consistent Auto flash performance with any Metz flash&camera, but without the extra comfort described in the following paragraph(s).
In August 2007, Christian K. notified me of a method he found that corrects the problem. I don't really understand why it works, but it works. Push the "Prog." button on your MZ40 series flash, then push the "+" button until "P 4" is indicated. Then push the "P" button to load the "programme" stored there. With the flash set to Auto, it now properly fires, independent from ISO. Usual restrictions on flash reach and Auto flash exactness remain, but no erratic behaviour. Depending on your flash, you may have to turn off the beeper now. You need to redo this after you turned off the flash. Christian tell us that this setting must be done, too, when the secondary reflector is used. Thanks for the info!
In November 2007, Mehmet mailed me about a problem with his K100D and 3701 adapter, when manual lenses (pre-A) are used with the flash set to Auto. The flash fires (almost?) full power and proper exposure cannot reliably be obtained. To remedy this, either insulate the extra contacts on the foot of the adapter or use the simple 301 adapter, which only has one contact (plus ground).
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