I am in Hong Kong, as mention earlier, I taking photos outdoors mainly, but there are no square format digiback now, switching the back format may be annoying , as I think that the image quality of Aptus II & Credo are similar then, rotation back makes more considerable . Also, as heard from someones , the usable ISO for digiback only 100/200 , the high ISO in digiback not so good as DSLR , isn't it?
My camera will be Hy6 mod2.
I use Hy6 with AFi-II 12 back. It is a superb combination; camera through rotating sensor. The advantages of the AFi-II back over Credo to me are lower price, rotating sensor, larger display, tilt screen - in that order. I would not state that Credo is better because newer. Why? Leaf is solid and durable. For dust on sensor I do not worry, it is simple to clean on a digital back. Using a Credo on Hy6 I believe you would worry more than an AFi-II, simply because you would take the back off and on between landscape and portrait orientation, which really is not a good option. I would worry about accidental damage to the back when doing so in the field. Assuming you do not go with a 90 degree finder, in which case you can rotate the camera. I stick to my WLF, because it makes small and compact and I really enjoy the view on the focus screen that way --- it is LARGE & BRIGHT. The 45 degree finder is near as big and bright, the 90 degree less so, and add weight.
I am normally Hong Kong based. Take a look at the Hy6 with AFi-II at Livecoal in TST, the agent for Rolleiflex in HK, or maybe 9days or simply contact Gavin Hui at Founder Globaltech. He is THE seller of Leaf in HK and on top of that a really nice and superbly helpful guy. I have purchased two Leaf backs from Gavin, simply because of his support and willing to help and give reasonable price. Following is off Leaf's website:
FOUNDER GLOBALTECH LIMITED
Rm 1010-11, 10/F, Eight Commercial Tower,
8 Sun Yip Street, Siu Sai Wan,
Phone: 852 2896 0999
Mobile: 852 9309 1173
Fax: 852 2898 1628
Gavin is the one who introduced me to Hy6 and that Livecoal was bringing it to HK. I am happy he did. His service? He delieved my AFi-II to me in a coffee shop in TST and we made transfer of money against camera there. Heck, on a visit to HK he even met me on one of MTR platforms in HK to sell me a tethering cable!!!
If you would like more info or Gavins, please message me. I suggest you ring Gavin on his mobile above.
Oh, do order the Hy6 with to take the Leaf battery in handle. It makes for simple. Plus, suggest you make sure to have the Xenotar 80/2.8 AFD PQS, it is the best lens I have ever owned and near glued to my camera. Sharp, wonderful rendering and character.
Happy to help!