I'd like to challenge the view that 6x9 folders give soft pictures
 

I also just last week got my fourth folder of my life. The previous
three all had severe problems due to misuse by the former owners, but
this one, a Zeiss Super Ikonta 530/16, despite fungus inside the lens,
is performing really well. Pictures come out sharp and with no funny
effects like a swirling background etc. Previously I thought taking
pictures of backlit subjects with uncoated lenses would always result
in flare, but this uncoated 8cm/2.8 Tessar has proven me wrong.