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Have the electronics checked very carefully. Electronic repair people for a Crown Graphic are in short supply.
tim in san jose
Have the electronics checked very carefully. Electronic repair people for a Crown Graphic are in short supply.
tim in san jose
Yeah, I don't think there are any electronics repair people who service CGs.
Yeah, I don't think there are any electronics repair people who service CGs.
Been looking to get into LF for a while, and I think I have settled on the Crown Graphic. Problem is, I don't know much about them operationally, and I can't find anybody local to show me around one.
What are the batteries for in the crown's rangefinder?
I sold a nice clean one on ebay recently. The buyer was bitching about the battery corrosion in the rangefinder. I ended up giving him $100 of the sale price back, and am still a little bitter about it. I didn't even know the darn thing had any batteries.
... a solenoid on lens boards. The function of this is to switch very heavy currents of the kind you would need to fire 40 flashbulbs all at once. Unless you want to do this, the solenoid is ornamental. you connect the flash directly to the shutter.
Isn't the purpose of the solenoid to trip the shutter, using the button on the flash handle?
David, with all due respect... the solenoid has nothing to do with flash firing current. One does not connect a flash to the solenoid. The solenoid trips the shutter and provides a mechanism for controlling the delay required for flash bulb use. The benefit is to trip the shutter and flash "simultaneously" using the red button on a Graflite flash handle.
My conclusion is that the solenoid essentially provides a means of synchronising a non-synchronised leaf shutter
except that, as I said, you could potentially be using a very heavy firing current with dozens of bulbs and the solenoid would isolate the shutter from this.
Yes. this is correct.
This gave me pause...but I think I understand what you're saying. The problem is you come to the point so quickly that at first it seems incorrect. It is largely a matter of point of view. Let us assume that you have a large number of flash bulbs to fire and that this would require a large current (I'm not entirely convinced of this but, let us assume it is the case for now).
I think what you're saying is that one could try to connect all of these to the flash synch terminals on the shutter itself and that, due to the large current involved, this might be a problem to be avoided.
In this case one could trigger both the shutter solenoid and the flash bulbs with some external switch and in this manner "isolate" the flash current from the shutter...correct? I think "isolate" is the wrong word here but, that is a nit. A transistor connected to the shutter's flash synch switch would isolate the shutter from the flash current. The solenoid is just completely avoiding the shutter's flash synch switch altogether.
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