Considering a move from Hasselblad 501CM to Pentax 645 or Contax 645?

I have a Hasselblad viewing screen with the focusing collar, but I prefer a focusing screen without the collar and with cross hairs because:

1. I like the cross hairs for lining up horizontal and vertical lines.
2. I found in low light situations and with long lenses, the focusing collars go dark and are hard to use.

I move the focus the lens fairly quickly in and out of focus. That way I can converge on the focus point quickly.

ted_smith said:

I'm keeping my eye out for an NC-2 prism before I give up on the Hasselblad.

Click to expand...

http://www.cameraworld.co.uk/used-hasselblad-p-finder.html
83-00

consult an eye doctor and then buy a SL66SE happy shooting

I have today bought an NC-2 Prism...got one off eBay from a camera gear retailer in the end for £39.99 which from what I have seen seems like quite a bargain. Looks to be in good condition so we will see. All the retailers, where they were found, were asking £80 upwards, though I appreciate you get a warranty that way, but hey...I will let you know if my focus woes reduce! Thanks for all the advice and help with this.