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Old Jun 3, 2011, 10:54 PM   #11
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Hmmm, I'm not convinced. A vast amount of computer logic can be crammed into a tiny space these days. I suspect it's more to do with marketing.
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Old Jun 3, 2011, 11:04 PM   #12
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yes they do came in allot of different things into a computer. But a flash does not even have the processor of a ipad or even a dslr. They do not have very high processing chips in them. Most likely just simple eprom or something that handles the codec for that system. I know my canon flash will not ttl on my olympus and vice a versa and I use 3rd party quality flash.
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Old Jun 4, 2011, 6:36 AM   #13
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I have seen the units you mention, and IIRC, they were TTL, but not e-TTL or p-TTL types. With the straight TTL, the camera just sent a cutoff signal to the flash based on light reflected from the film surface, and were all very similar. The flash unit switch only had to reconfigure the contacts for the different cameras.
The p-TTL systems used now are more complex and involve data sent between the flash and camera, with each maker having it's own protocol.

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Old Jun 4, 2011, 11:03 AM   #14
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You could well be right.
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Old Jun 4, 2011, 1:37 PM   #15
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I once had a Minolta X-570 film SLR and when I came to replace a Minolta TTL flash I found most of the new Minolta TTL flashes at that time would simply lock up the camera so even TTL flash had evolved within that one manufacturer over a few years.
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