Not a lot of difference? I have the original screen laying around. Maybe I'll look at the differences. But has anyone have tips on how I can clean the old one without messing it up? Or destroying it?
If by original you mean the Rolleiflex original (F&H embossed on one edge), most likely it is a bit yellowed from age. That's what I see in these screens.
Here's a comparison of different screens. The Rolleicord Split at the bottom is most likely a Rolleiflex F screen; the split was in Fs and Es while no focusing aid was in Rolleicord Vbs (only one that took removable screens). Yes, the Maxwell is brighter by a bit. Best of luck getting one.
EDIT: June 2020: I redid the original tests in 2016. I think I started a new thread with the new tests. Butr I nver came back and cleaned up this post, and this is the one that was made a sticky. So, here is a more complete sample. My original discussion based on 4 or 5 screens:: >>>>The...
rangefinderforum.com
To clean any of them, very gentle soap and a soft camels hair brush. Follow fresnel grooves. Wash in warm water. Bill Maxwell recommends Johnson Baby Shampoo for his screens. The issue with his screens is that the Fresnel grooves come to a very delicate 'point' on the outer edges and these can be easily pressed down, bent, etc. Hence the delicacy and the desire for a brush, not scrubbing with even a finger tip. I haven't noticed other screens being as delicate but still you need to be careful not to deform the plastic on both sides.
Something like an A/B comparison in real life or photos can show things, but the human brain is remarkably adaptable. Any quality screen is going to work very well once you are in the field and concentrating on taking photos, not comparing screens. Remember, the Rollei was used with ground glass screens for a couple of decades and made its real name with people using these. The arrival of plastic bright screens coincided with the slow ascension of 35mm cameras as the standard in working cameras.
Oh, Magicflex in Germany has some nice screens. My impression is that his carefully selected top line screens are on a level with Maxwells, a touch brighter than Olesons, and hovering between the Maxwell $350 and Oleson $125 in cost.
Ultra bright screens for Rolleiflex or Rolleicord cameras
magicflexcamera.com