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Old Apr 12, 2009, 9:20 PM   #1
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I have a nice new E-520. I also have a bunch of legacy Minolta and Pentax 35mm stuff about. The flash I had for the Minolta was a Minolta Auto 280PX. Won't feed flash info to camera I guess, but might work manually.

I think I've read there is some risks in using old flash units on new cameras, is this true ?

Anyone used this flash or other older Minolta flash units on their E series ?


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Old Apr 12, 2009, 9:42 PM   #2
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mr.sneezy wrote:
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I have a nice new E-520. I also have a bunch of legacy Minolta and Pentax 35mm stuff about. The flash I had for the Minolta was a Minolta Auto 280PX. Won't feed flash info to camera I guess, but might work manually.

I think I've read there is some risks in using old flash units on new cameras, is this true ?
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There is a maximum juiceload the hot shoes on DSLR's can accept. One site that has a lot of information on the subject is right here..
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If there's nothing there on your specific flash, you'd need to take your flash to a shop and have the current measured to see if it's safe or not for the E510.
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Old Apr 12, 2009, 10:37 PM   #3
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I measured my Minolta Auto 280PX. It was +1.8Volts DC when charged. Then checked it again while triggering it with the test button with my oscilloscope (got a well equipped electronics workshop at home), which also showed nothing above +1.8V. Safe. The control pins had 0.5V and 5V on them, but can be masked out.

That website you linked too does have the flash listed too, same result. Very safe it seems.

Some good luck for me...


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Old Apr 13, 2009, 12:23 AM   #4
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Tried out the flash. On the E-520 it does trigger but the camera exposure needs to be manually corrected.
In the end the on board flash gives me similar results. Interesting result, because I thought it wasn't very powerful, but maybe it's the way I'm using it or I need to set the camera differently to get the best result out of the inbuilt flash.
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Old Apr 13, 2009, 3:08 AM   #5
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You have to make sure the TTL pins don't make contact with the Olympus TTL contacts.

Anyway as for flash power it should be double the guide number of the internal flash so that should mean longer reach.

Since you're using the flash in manual or auto modes you have to match the aperture to the chart on the back...shutter speed doesn't matter as long as you don't exceed the sync speed (shutter speed controls how much ambient light is captured).

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Old Apr 13, 2009, 4:33 AM   #6
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Yes, the TTL contacts don't seem to do anything when attached to the E-520. If anything they stop the trigger. Was there any other worry with that ?


Martin

PS. If you have a minute. What's the best way to set the camera to use the flash in this way (link to info maybe) ?
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