Paul Tavares
Well-known member
Hi everyone. I've been using the 100-300 for over a year now on my GH1. I'm very happy with the results but I've noticed that at higher shutter speeds (over 1000) sometimes the images are not as sharp as I would expect. This led me to wonder if the image stabilization is ineffective at higher shutter speeds or if it even makes things worse. My normal mode of shooting is always OIS on and mode 1.
I did a series of tests before the firmware upgrade at 1/640 and 1/1250 but the results were inconclusive due to a poor selection of the target. A sign with text but the text was too large. After the firmware upgrade at the end of January I did another series of tests. I took a series of shots of a sign with small text at a distance of about 10 meters.
The test was 5 shots each handheld at 1/400 with OIS mode 1, OIS mode 2, OIS off for a total of 15 shots. Second test was same series handheld but shutter speed of 1/800 for another 15 shots.
What I found was that at 1/400, OIS helped. There was no discernable difference between mode 1 and mode 2. I use mode 1 because it helps in framing the shot. Three of the OIS off shots were acceptably sharp.
At 1/800 all 15 shots were acceptably sharp. All 5 of the OIS off were sharp and a few seemed sharper then the shots with OIS on.
I'll be going out again in the next few days and try shots on birds with the OIS off and shutter speed 1/800 and higher and see what I get.
Questions for the group. Do any of you shoot with OIS off and what is your experience? Have any of you seen a discussion in any forum on effectiveness (or lack of effectiveness) of OIS at higher shutter speeds?
Paul
2012 Adds and Upgrades to photo life list: http://rustyblades.smugmug.com/Natu...-Adds/20805592_F9RZ5t#!i=1702467310&k=Px6Rgkv
I did a series of tests before the firmware upgrade at 1/640 and 1/1250 but the results were inconclusive due to a poor selection of the target. A sign with text but the text was too large. After the firmware upgrade at the end of January I did another series of tests. I took a series of shots of a sign with small text at a distance of about 10 meters.
The test was 5 shots each handheld at 1/400 with OIS mode 1, OIS mode 2, OIS off for a total of 15 shots. Second test was same series handheld but shutter speed of 1/800 for another 15 shots.
What I found was that at 1/400, OIS helped. There was no discernable difference between mode 1 and mode 2. I use mode 1 because it helps in framing the shot. Three of the OIS off shots were acceptably sharp.
At 1/800 all 15 shots were acceptably sharp. All 5 of the OIS off were sharp and a few seemed sharper then the shots with OIS on.
I'll be going out again in the next few days and try shots on birds with the OIS off and shutter speed 1/800 and higher and see what I get.
Questions for the group. Do any of you shoot with OIS off and what is your experience? Have any of you seen a discussion in any forum on effectiveness (or lack of effectiveness) of OIS at higher shutter speeds?
Paul
2012 Adds and Upgrades to photo life list: http://rustyblades.smugmug.com/Natu...-Adds/20805592_F9RZ5t#!i=1702467310&k=Px6Rgkv