Our mission at BorrowLenses is to advance photographic and cinematic dreams by providing access to superior, cutting-edge gear and expert advice. Ready to get to work? Order from your desk, have gear delivered to your door, and take on your next project. TTL vs. What is TTL Flash? What is Manual Flash?
As stated before, TTL and manual flashes each excel in certain scenarios. Alexandria Huff's photography and lighting tutorials can be found on px and her blog. See her lighting tutorials here. She learned about lighting and teaching while modeling for photographers such as Joe McNally and has since gone on to teach lighting workshops of her own in San Francisco.
See her chiaroscuro-style painterly portraits on her website. EAD says:. May 11, at pm. Leave a Reply Cancel reply Your email address will not be published. A good telephoto lens can help you take your photograph In summary : while not achieving perfect exposure for the reasons you mentioned, TTL is still useful either on or off-camera to get a good exposure automatically.
Don't forget that when using E-TTL you can also apply different power ratios and flash exposure compensation to each group independently. In your example of the hair light you can either change the power ratio of the key light to the hair light.
Or if you are only using a single flash you can dial it up or down using FEC. And by selecting the Av exposure mode you can tell your Canon EOS camera that you want the ambient light to be the main light source.
As others have already said, E-TTL is most useful in situations, such as event photography, when the subjects' positions and the ambient lighting is changing rapidly. You don't have to constantly change aperture or flash power every time the subject gets closer or further from your lights. Even when you have lights mounted remotely on stands you can adjust the ratio so that when you are in one part of the room E-TTL gives more power to the flash more behind you key and less to the one more in front of you kicker.
It's a lot quicker changing one setting especially if that setting is on your customizable "quick menu" list than to manually change the power of each group individually. The same is true when the flash is on camera. Imagine you are too far from your subject for proper exposure even when on full power and pointed directly at the subject. Or suppose you are bouncing the flash off a wall or ceiling that absorbs too much of the light. Using E-TTL in Av exposure mode is specifically tailored to attempt to expose properly using the ambient light as the main light source and then only using the flash as fill or accent light.
If the ambient light falls below a certain exposure level based on the minimum Tv or maximum ISO you have told the camera to use the the camera kicks over to using the flash as the primary light source. This is true not only in the Canon EOS system, but also in many other camera makers' systems.
It depends. On or off camera, if the flash head is tilted up or swiveled to the left or right the E-TTL system will take that into account and won't use the focus distance reported by the lens in the calculation of how much power to use.
If off camera using optical wireless control such as a camera mounted or pop up flash the camera won't use lens focus distance either. If you're using wireless radio triggers, though, the camera may think the flash is camera mounted and try to use lens reported focus distance if the flash is set with the head pointing level and straight ahead. The basic answer is really that TTL flash isn't all that important in many situations, and that most of the situations where off-camera flash might be used fall into that camp.
If you're in a place where the light doesn't change much, any exposure automation is not a big deal, let alone flash automation. It's handy for the first exposure of the session, and after that, you can just leave it alone. With flash, you can take a test shot or two, and there you go. The more flash photography you do, the more important having a light meter will be. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.
Best 35mm Film Cameras. Best Macro Lenses. By Nathaniel Stephan. Last Updated: November 25, Outside the Shot participates in affiliate advertising programs. As an Amazon Associate I earn from qualifying purchases made through links on this site. I may also earn commissions from links to other online retailers. You can see the full disclosure here. Table of Contents. Leave a Reply Cancel reply Your email address will not be published. Recent Posts. The 10 Best Light Meters in Photography business details Where do i start when i sell my work or charge for my services?
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