« on: July 16, 2014, 09:39:56 PM »
Yeah..everything I have read is super positive about the IS. I am an extremely experienced photographer.
Like I said, I am very experienced and truly know and understand ALL the variables...except the IS ..LOL!
Super helpful, thanks. I'd agree your test should absolutely net sharp shots. Something seems amiss.
- How good is your grip / mechanics of holding the camera steady? I presume this is not your problem, but it's worth ruling out: pick a 'tough to handhold without IS' shutter speed (say 1/4s for a 16mm shot or a 1/15s for a 35mm shot) and take 10 shots with and without the IS on. If the IS shots have a higher hit rate and the than the non-IS shots, that implies the IS is working and it may be your grip / holding technique.
- Do you know the IS is on and working? One simple test is with your ears. Verify the IS switch is 'on' and switch the lens to MF (so you don't hear focusing adjustments) and then you press the shutter halfway with your ear next to the lens. You'll initially hear a little noise at half-shutter-press, but after you let go, the IS motor/mechanism/whatever should be whirring in the background for an additional moment or two. It's really, really faint with IS in the year 2014, but the sound is there if you listen for it. If you don't hear that noise, I'd wonder if there was a glitch with the IS internals or possibly you have a faulty connection with the IS switch. I defer to the nerdy folks and professionals on this forum, but if you can't hear the IS going when the switch for IS is 'on', something is off and I'd consider returning the lens.
- It could be a poor AF, potentially. Take AF out of the possible root causes and repeat your test: switch to MF, go LiveView and 10x manually focus and repeat your 'tough to handhold without IS' test. And yes, you need to handhold during LiveView for this -- it shouldn't be too hard with these wide FLs (I'm reaching / speculating at this point.)
Thanks for all the HELPFUL suggestions...I have tried to be very specific...have to be to diagnose the situation! Being vague and non descriptive won't get us anywhere. You have brought up some things that I have not tried.
So...I gave a listen...and I can hear the IS motor kick on and continuously run... I knew it was working as my IS shots were sharper than my non IS shots...but my concern is that the IS is not performing as intended or at 100%.
Your suggestion about using manual focus is a great idea...that will eliminate one more variable...I am going to shoot more tests over the next few days. I have a lot of IS lenses and also use Olympus MFT cameras as well...so I am no stranger to IS...and with all the rant about how fantastic the IS is on this lens I think that I am intuitively finding it lacking a little or that something is not quite right. Could be me , i.e. operator error or too much expectation! LOL!
I do have good grip tech, etc...but my experience is that if I go thru all those monkey shines to be as rock solid as possible it is to push my results past expectation...which many times I can...but if this lens is at all what it is touted to be I should expect consistent excellent results at 1/15-1/30 while casually (not carelessly) gripping the camera.
Don't you agree?