What is "TTL"
- Thread starter Zippsy
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uh oh, now I am more confused than before.
It's in this forum because I had only heard the term in relation to u/w photography. I thought it had something to do with strobes and whether they flashed "TTL" or manual. At least that's what I thought all the discussion was about.
Thanks for, ummm, errrrr, clearing it up for me.
flash through the lens :dunno:
It's in this forum because I had only heard the term in relation to u/w photography. I thought it had something to do with strobes and whether they flashed "TTL" or manual. At least that's what I thought all the discussion was about.
Thanks for, ummm, errrrr, clearing it up for me.
flash through the lens :dunno:
Big Kahuna
Senior Member
TTL came to prominence in u/w photography with the proliferation of digital cams. In the good old film days, TTL means only one common standard, and it works with all strobes. But in this digital age, Olys, Canon, Nikon and whathaveyou all have different ttl systems - DTTL, iTTL, ETTL.
so when it comes to strobe selection, you have to ensure the strobe can pick up whatever ttl signal your camera sys is sending in order to syn. If not, you will have to shoot with the strobes in manaul mode.
hope this clear the air.
I miss my Fuji S2 Pro. uses the old film TTL technology, so it can be used with all the old u/w strobes everyone is discarding.
eric
so when it comes to strobe selection, you have to ensure the strobe can pick up whatever ttl signal your camera sys is sending in order to syn. If not, you will have to shoot with the strobes in manaul mode.
hope this clear the air.
I miss my Fuji S2 Pro. uses the old film TTL technology, so it can be used with all the old u/w strobes everyone is discarding.
eric
I think you might have just done what Zippsy fear. You might have confused him. :dunno:
Different housing which have TTL function enabled should also have the respective circuitry available for use. Is it true? Or is it still strobe, housing and camera dependent?
Heard that S5 Pro is coming.
liquidforce
Member
ziploc
New Member
TTL is Tua Tua Liap.. or big
Haha that's funny. :bsmilie:
foxwagon
New Member
Thanks all. I think I'm less confused now. It sounds like TTL itself stands for "through the lens" which is pretty meaningless to a noobie like me. I don't understand (or personally much care) what it means for film cameras but the meat of what TTL apparently means (to me) for digital is that there is a sensor looking "TTL" to determine how much to tell your strobe to flash. Strobes can be set on TTL or manual before taking a picture. If it's on manual, it will flash at the intensity that you tell it to, e.g., 1/2, 1/4, 1/6 etc. to reduce the brightness on your subject. Depending on the aperture and shutter speed chosen, you may want to dim down the lights. You have to do some math and guessing if you do all that on manual mode but if you are using the TTL technology, the camera should be able to tell the strobe the right amount of flash to use to get the best results. Unfortunately, digital cameras of different makes talk to their strobes with different languages so you have to make sure your brand of camera can communicate properly with your strobe. It's best to do this before buying both. Finally, although TTL is designed to give the best results, many people believe it doesn't and that "artistic" lighting can only be obtained through manual strobe settings.
At least that's what I am understanding now. Correct me at your own peril though - the next person who confuses with better information will get strobe-whipped. :bsmilie:
At least that's what I am understanding now. Correct me at your own peril though - the next person who confuses with better information will get strobe-whipped. :bsmilie:
foxwagon
New Member
You are on the way to teach the photo electives in PADI. I wouldnt bother about TTL (if your current camera doesn't have the hotshoe) that much because with manual you can adjust the settings to what you like & not what the tiny computer in the digital camera thinks is right.
the thingy on top some of the camera where you can attach an external flash....
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