All selenium meters will fail.these are good models because many (most?) of the selenium meters have failed
... Selenium is an active emitter in that it generates an electric current when light hits it.
Over time this capacity decreases until it's no longer able to do that.
So the usable life of a meter depends entirely on how long it's been exposed to light.
A meter that sits out on a table by a window will die before one kept in a closed case.
...
Strange as they went out of vogue long ago (1980s?) as professional use. But it's curious that I notice quite a few E2's around.Did they come from studios or industrial settings where a meter was not needed? It's odd, indeed. Regardless, these are good models because many (most?) of the selenium meters have failed and, as far as I have read, no manufacturer makes selenium material on the appropriate substrate any more = unrepairable. And a modern hand-held meter is more convenient.
Congrats onyour Rollei! in my opinion the meterless E is the sweet spot, as it is as good as the F but does not command such insane prices. You will have fun with it I'm sure.
There is a difference, though. The silicon and older cadmium sulfide (CDS) sensors change resistance of a current. So they need a battery and circuitry to send a current through the cell and then display the output. In contrast, the selenium cell provides the current at an extremely low voltage, and a meter or needle of some sort displays this current. From what I have read, often the problem with selenium meters is corrosion of the backing material or corrosion where wires attach to the backing plate. I have no experience with the Sekonic 398 selenium meters - do ones older than, say, 20 years, still work accurately?All selenium meters will fail.
silicon sensors (that replaced selenium) do not suffer from this problem at all.
- Leigh
Congrats onyour Rollei! in my opinion the meterless E is the sweet spot, as it is as good as the F but does not command such insane prices. You will have fun with it I'm sure.
One important point: be sure to use a Rolleifix whenever you use your Rollei with a tripod. Do not mount the camera directly on the tripod, there is a risk of bending the bottom/back plate. My 2 cents
I'm trying to source a strap. The alligator clips kind of scare me. Are these reliable? It seems like if one half of one side fails you're camera is plunging to the ground. Maybe they're highly reliable. I've researched and seen plenty of threads with strap recommendations but no one talking about if the alligator clips are reliable. I want something I can take off and on fast. I was eyeing new leather straps with the alligator clips but I just don't trust them yet. Any thoughts on that? I've seen some other methods for straps with a fast disconnect but most have metal too close to the camera for my taste.
One more question if you guys don't mind... tomorrow I'm shooting some Ilford Delta 100 Pro. I wanted to overexpose a bit to test that out and I also wanted to experiment with my medium yellow filter so I start to get an idea of what I get from that. Curious about what I should shoot this at. It looks like with the filter alone I should be down to 64 instead of 100 then whatever adjustment I make for the overexposure. Any thoughts on a good place to start with this? I've seen recos on going down a stop for overexposure and then the info on what to use the filter at but wasn't sure how I should handle doing both together. Thanks in advance for any insight!
The Op/tech pro loop connectors have a cloth loop that can be pushed through the slot on Rolleiflex cameras. The strap falls away from the focus hood, one of the attractions of the alligator straps. You can use the neoprene center section. I made my own center section using the clip connectors and a 3/4 inch web strap. Ican also connect just gthe two small connector sections and have a wrist strap.
The alligator clips are perfectly safe. What is NOT safe is an old leather strap- often dried and fragile. Best to get a replacement made by a shoe repair or leather worker
Try 50 or lower for the Delta 100. The filter itself is generally considered 1 full stop. I find it a somewhat contrasty film to begin with so you might want to underdevelop a touch at first. But really, experience on your own system is the only reliable answer.
Oh, try the Rollei 'light green' (hellgrun) filter with the Delta 100 if you can. Yellow-green basically and can give a nice look.
Of course you need to compensate for the filter. Then why don't you bracket some exposures and see what works best? I usually go in 1/2 increments.
This can be very important. In my testing of Arista 200 speed film I found I have to rate it at 40 ISO to get proper density. This was after measuring shutter speeds exactly and testing for correct developing times. Burn a few frames and find out what works best for you!
So just to clarify b/c I didn't ask my second question well... When using filters and trying to overexpose... should I be calculating the overexposure first or the filter first? Pretend I want to shoot 400 at half box speed and calculate filter at 2/3. (Actually when I just calculated it both ways I seem to get the same answer but theoretically I expected it to vary some.)
I think there is a lot of confusion here about Rolleiflexes:
2. Filter factors: near the back of the manual (p. 56 on my 3.5 manual), there is a page titled, "Rollei filters for black and white shots." For example, for med. yellow with pan film, it shows -1.5. That means open up 1.5 f-stops. You will need to test your particular film, but the table is a reasonable guide.
The Rolleiflex is really brilliant. Have fun!
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