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Reasons to use TTL flash – speed & simplicity

May 10, 2012 Neil vN 19 Comments

Reasons to use TTL flash - speed & simplicity

Okay, true strobists might recoil in horror, but I often prefer using TTL flash to sweeten an image when shooting on location. I get to the final image faster than if I had gone the more methodical route of manual flash. For some situations, manual flash is the only way to go. For example, when your subject is static in relation to your lights and you have to get consistent lighting and consistent exposures, image after image, then manual flash makes the most sense. But for times where you want to shoot faster, and shoot on the  Read more inside...

Off-camera TTL flash

May 20, 2011 Neil vN 45 Comments

Off-camera TTL flash

This image of Amy, one of our models at a workshop, is a fairly straight-forward portrait using off-camera flash in TTL mode. And it is ideal for an overview again of how easy the ambient & flash exposure metering is. The basic approach with this on-location portrait is to expose for the ambient light in the background, making sure our subject is somewhat under-exposed ... and then to add off-camera flash with a softbox. The first question that came up was - how did I meter for the ambient light?    Read more inside...

When aperture does NOT control flash exposure

November 10, 2009 Neil vN 66 Comments

When aperture doesn't control the flash exposure

The axioms regarding flash photography that get thrown around most often, are: ambient exposure is controlled by shutter speed, flash exposure is controlled by aperture. While these are true, there's also an over-simplification happening here. Just rallying those two statements in a perfunctory manner, we actually lose understanding of how flash and ambient exposures actually inter-relate. The problem with the first statement is that it disregards that aperture and ISO both control ambient exposure as  Read more inside...

Flash exposure is controlled by aperture – but only for manual flash

October 7, 2008 Neil vN 27 Comments

Flash exposure is controlled by aperture ... but only for manual flash

Quite often the short-hand descriptions of the fundamentals of flash photography become misleading 'facts'.  I frequently see the following statements repeated on the various photography forums and in questions that are emailed to me: flash is controlled by aperture shutter speed controls ambient light. (This is sometimes twisted around to a completely misleading version: ambient light is only controlled by the shutter speed.) Even though these descriptions are half-right, they are also half-wrong  Read more inside...

Manual flash vs. TTL flash

December 26, 2007 Neil vN 67 Comments

Manual flash vs TTL flash

For correct flash exposure, 4 things need to be controlled and balanced: - aperture - ISO - distance (from the flash to subject) - power (the flash's actual blitz of light, taking into consideration any diffusion) Two things relate to camera settings, and two things relate to the flash itself. To really understand flash photography, it is essential to memorize those 4 things. If you need an acronym to remember things more easily: PAID Power, Aperture, ISO, Distance. There are distinct ways in which flash exposure is controlled though - Manual  Read more inside...

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