Talk:Flash synchronization

Inaccuracy
It says "X sync closes the flash contact just as the shutter blades are almost open (..)"

This sounds like it describes the point in time just before the shutter opens, i.e. even before light is let through the lens. It should read something like "X sync closes the flash contact just as the shutter blades are completely open (..)" --Schorschi (talk) 08:41, 19 August 2009 (UTC)

D70 has an electronic shutter
"but some modern cameras may have an X-sync speed as high as 1/500 (e.g. Nikon D70)." The Nikon D70 and the D40 have an electronic shutter in addition to their focal plane shutter, so this is inaccurate.

True, the hybrid shutter of the D70 (and perhaps also the D40, I have never used one so I cannot verify this) makes it possible to synchronize at all shutter speeds if you just trick the camera into believing that there is no flash attached. A piece of non-conductive tape over the two contact closest to the back of the hot-shoe will do the job. Of course, the flash will have to be in manual mode since no communication between the camera house and the flash unit is longer possible. Maxzom (talk) 12:22, 21 February 2010 (UTC)

Inaccuracy regarding leaf shutters
"Leaf shutters, (...), can move much faster than focal plane shutters and allow flash sync across all shutter speeds (..)." While it might be true that leaf shutters can move faster, this is not the correct reason. The reason why leaf shutters can sync across all shutter speeds are that there IS one moment during exposure where the shutter is fully open and thus exposes the whole film frame/sensor. As opposed to the focal plane shutter where the curtains at one point start to expose only a (moving) strip of the film frame/sensor. Maxzom (talk) 12:27, 21 February 2010 (UTC)

X-contact and X-sync
Hello all from russian Wiki! Please, explain to me a few questions. Andrew M. Vachin (talk) 07:38, 18 November 2010 (UTC)
 * 1) X-contact and X-sync it is the same thing? X-contact can be found in Nikon F6, Hexar RF and others. In Sigma DP1S and Sigma DP1 says X-sync contact. The most common X-sync. Or there is confusion of terms?
 * 2) Do I understand that the X-sync is just the method of synchronization, but does not define the connector from the flash? The flash can be connected to the camera via coaxial PC connector, hot shoe or wireless, and can use any method of synchronization (M, F, FP or X sync) for control of the flash, which is available in the camera, right?


 * It appears that "x contact" can refer to either the hot-shoe connector contact that provides the x-sync signal, or to the switch contacts that close to complete the circuit; either way, the x means it's doing x syncronization. It is not a very common term.  X sync is the method, or timing. Dicklyon (talk) 07:00, 19 November 2010 (UTC)

Flash sync failure image


Can anybody provide an example photo that doesn't use photography equipment as its subject? I wasted a few seconds staring at the old Pentax camera before realizing that it is irrelevant to be point being conveyed, and that this photo is actually on this article because of the overexposed top half and underexposed bottom half. Pinging and  as the original uploaders. – void  xor  21:38, 21 May 2020 (UTC)

Incorrect Original Research
"Only certain camera and flash combinations support this feature, and the camera-flash pairings are almost exclusively from the same manufacturer. Wireless remote flash triggers with these features are becoming more common." This is no longer at all true, now the vast majority of flashes sold are third-party wireless flashes that support HSS.71.63.160.210 (talk) 19:54, 25 December 2021 (UTC)
 * ✅. I have removed the OR in question. Thank you for pointing it out. —  void  xor  20:10, 26 December 2021 (UTC)