[sperera]

Don't forget that taking portraits with a 4x5 requires considerable patience on part of the photographer AND the subject. It's also a bit hard to get used to because once you put the film holder in, all you can do is hope your subject doesn't move and ruin your composition. After trying it myself I can see why Speed Graphics have those nice supplementary focusing gadgets like rangefinders and framing sights.

i have a Hasselblad magnifier i use to check images on the dslr in broad daylight that I've been using to see images on the ground glass.
I also bought (with the Sinar prchase) a bellows with a magnifier (cant remember the name of the thing!!!!!) that allows me to view at angles as well.....my father-in-law saw it all and told me if all else fails I can become an accordion player.....