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Through-the-lens metering (TTL) is a feature in many modern cameras that allows the user to measure light levels through the lens that will capture the picture.

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1answer
370 views

Will the “Pixel Knight TR-332” radio flash trigger work with a Canon 350D?

I am using a Canon 350D/XT and found some information on web that the Pixel Knight TR-332 radio flash may be incompatible with that particular Canon camera due to DIGIC II and lack of Flash functions ...
4
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1answer
1k views

How do I read the flash distance scale on the Canon 580EX II?

My Canon 580EX II has a distance scale running from 0.5m to 18m. When the flash is in manual mode, a single segment of the distance scale illuminates to indicate the maximum effective range for my ...
6
votes
1answer
284 views

Are there risks in using a third-party TTL cable?

I see that the cables that support TTL offered by manufacturers such as Canon and Nikon for using a flash off-camera are fairly spendy and that there are some third-party cables at a fraction of the ...
13
votes
3answers
779 views

What was my flash power?

When I am using a Canon flash in the E-TTL mode, how can I tell which flash power the E-TTL magic chose? For example, if I got a correct exposure in the E-TTL mode, can I easily choose the same flash ...
19
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4answers
23k views

What does TTL mean?

I'm new to photography and I see the term TTL all over the place. What does it mean? And how do I use it to make my pictures better?
6
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1answer
324 views

Can an E-TTL II cable trigger a speedlite in Manual mode

Essentially, if you own an E-TTL II (or presumably iTTL) cable of a certain length/type, is there any reason to also own a manual PC-sync cable of a similar length/type, or can the camera be fired in ...
9
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2answers
852 views

Inexpensive flash with full ETTL support

I've been planning to get the Canon 430EX, but I'd love to save a little cash, so I started looking at other 3rd party flashes. I've found a few that claim to have ETTL II support, but being so much ...