To achieve this goal, cameraman can measure light with the actinometer inside machine, a little waterproof carapace allows cameraman to be measured in the dot even measure light and matrix solely, integratedly change between light.
To enhance contrast, we should look for a bit dark background. Accordingly, do not point to camera the body that be photographed directly, carry up a little however bear down on about 30 degrees high surface. For example, if flash to cooperate lamplight encircles F8, measure smooth indication shutter to should be 1/30 second, criterion this is us the time of exposure that wants set on camera. That share that slower shutter can let setting of the expression on film is sufficient exposure, give what what we want to go after the sort of compact, abstruse the effect of the briny setting with azure blue.
After be being carried out through measuring light a few times, cameraman can have “ to understand the ability of ” ambient light gradually, can mix according to different deepness different situation, the shutter rate with corresponding set, get first-rate light combines the result.
Of TTL function detect
TTL controls a system to be told commonly is waterproof. If you appear continuously wrong exposure, be about to search seek an account.
If because contact is used and maintain the problem that go up appears if corroding, TTL system can be affected. To avoid this problem, in pull out contact when must slow, when and be in unplugging gently rock connect. Can avoid interior to produce vacuum so, the seawater of inspiratory remains, corrode the surface of contact.
The cap is protected on equestrian upper cover and using annulus of O of silicone oil conserve carefully also is very important. The contact dispute of flashlight often is corroded easily, make faint flashy signal becomes confused (this bit, china highly skilled doctor has feeling most, please China advise others by using one's own experience of highly skilled doctor, those who agree ask raise one's hand, thank! -- translator) . But unfortunate is, a lot of cameraman still overjoyed, did not realize this is nodded, because their flashlight still is in,flash and just do not have TTL function completely.
Always be good against a rainy day, want the contact between flashlight and waterproof carapace to had had any problems only, that goes up two minutes with respect to the flower, do TTL function test. The program is as follows:
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