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Forum: Pentax Camera and Field Accessories 10-27-2015, 03:02 PM  
Wireless Flash Question - How to Make Main Flash Not Part of Exposure?
Posted By UncleVanya
Replies: 26
Views: 3,051
I use my k3 to optically trigger my af540fgz with no problems. Two options for this exist wireless master ( on board flash adds to exposure ) and wireless controller, where in theory the on board flash doesn't add to the exposure (it seems to some people that this is not quite true, but it does reduce the effect to a minimum.)
Forum: Pentax Camera and Field Accessories 06-25-2015, 01:24 PM  
Wireless Flash Question - How to Make Main Flash Not Part of Exposure?
Posted By UncleVanya
Replies: 26
Views: 3,051
LOL - I hope it was GOOD beer.
Forum: Pentax Camera and Field Accessories 06-25-2015, 07:57 AM  
Wireless Flash Question - How to Make Main Flash Not Part of Exposure?
Posted By UncleVanya
Replies: 26
Views: 3,051
Max - allowing the on camera flash to do P-TTL is not what I was thinking you were suggesting it was doing. However now that you posted that it seems that manual I linked must be out of date or it would mention that wouldn't it? Who knows - I'm inclined to get a set of these triggers and some older flashes at some point.
Forum: Pentax Camera and Field Accessories 06-25-2015, 07:29 AM  
Wireless Flash Question - How to Make Main Flash Not Part of Exposure?
Posted By UncleVanya
Replies: 26
Views: 3,051
I'm not sure that the Cactus supports P-TTL. See manual here: http://www.cactus-image.com/Cactus%20V6%20User%20Manual%20(EN).pdf

One mention of P-TTL in the whole thing and it isn't suggesting that it supports P-TTL in fact it is saying it can only use the TTL control on basic TTL flashes not those that are P-TTL etc.
Forum: Pentax Camera and Field Accessories 06-24-2015, 01:42 PM  
Wireless Flash Question - How to Make Main Flash Not Part of Exposure?
Posted By UncleVanya
Replies: 26
Views: 3,051
I have seen other people comment that despite the promise of not including the pop-up flash in the exposure they have not seen this in practice. In practice they claim the pop-up still contributes to the exposure. Could you try adding a small modifier to bounce this so the off camera flash still sees it but the effect is limited on the subject?
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