Archived posting to the Leica Users Group, 2013/05/21
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Le 21 mai 13 ? 20:54, lrzeitlin at aol.com a ?crit : > After a frustrating afternoon trying to catch a picture of my grand > daughter diving into a pool I decided to check the shutter lag of my > digital cameras. Back in the days when I actually took sports photos > for a sparse living I had honed my reflexes to the point where I > could catch pictures of the action as it occurred. My old film > Leicas had a shutter lag of about .1 second as measured by an > electronic timer. That's about the same as human reflex time. > > Using the same timer I measured the lag on a Canon DSLR and an > Olympus DSLR. Both had a lag in the range of .3 to .4 seconds when > autofocusing, .2 to .3 seconds when prefocused. > The camera I used to photograph my grand daughter was an Olympus > EPL1, a mirrorless micro 4/3 camera with a kit 14 to 42 mm lens. > When set to the automatic mode in which the camera sets exposure, > focuses and stops down the lens, the average shutter lag was .76 > seconds. In program mode it was slightly faster, .63 seconds. No > wonder I only caught the splash of water when she was fully submerged. > > I own the lens bodycap that Olympus released this year. It is > basically a plastic body cap with a miniscule f8.0 lens (14 mm focal > length) in the middle like a tiny bug's eye. Fixed focus, no > aperature adjustment. Still it takes adequately sharp pictures. With > this lens mounted on the camera the shutter lag averaged only .14 > second. Almost as good as a film Leica and much better than a > digital Leica. With no focusing or aperature adjustment possible I > suspect that I am close to the minimal electrical response time of > the camera itself. The next step is to mount one of my film Leica > lenses on the camera and check that. > > Incidentally the shortest lag I ever measured was on a Rollei 35 > mechanical shutter camera. It was only .05 seconds. > > Larry Z > > that's where previsualization comes handy I presume ;-) now what set up did you use to assess the shutter lag svp TIA Ph whose reflexes are lost, at least the good ol' R ones > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information One sees clearly only with the heart. What is essential is invisible to the eye. Antoine de Saint Exup?ry in Le Petit Prince. NO ARCHIVE