Olympus EM-1 IS issue

[mtomalty]

Hi

Looking for some help sorting out a small issue with a newly
acquired used EM-1
Currently using the camera with Panasonic 15asph,25asph and 42.5mm
Getting wonderfully detailed images at exposure times shorter than 1/200
and longer than 1/60.
Using settings in the 1/60,1/125 and 1/160 (all with IS engaged) results in
files with a slight double exposure type blur as if the IS is moving the capture fractionally
which results in unusable files.
Any suggestions as to how to go about dealing with this in the menu?

Thanks
Mark
www.marktomalty.com

[AlterEgo]

Hi

Looking for some help sorting out a small issue with a newly
acquired used EM-1
Currently using the camera with Panasonic 15asph,25asph and 42.5mm
Getting wonderfully detailed images at exposure times shorter than 1/200
and longer than 1/60.
Using settings in the 1/60,1/125 and 1/160 (all with IS engaged) results in
files with a slight double exposure type blur as if the IS is moving the capture fractionally
which results in unusable files.
Any suggestions as to how to go about dealing with this in the menu?

Thanks
Mark
www.marktomalty.com

do you have antishock = 0 to emulate EFCS ? if yes and you shoot hand held then may be defective (you got it used - so who knows what happened) camera... if no then set it because the range of exposure times is prime suspect for shutter shock effects...

[mtomalty]

Thanks
Definitely sounds like it would be the source of the problem.
I've now gone through the camera menu 3 times and can find no
item where this setting can be adjusted.
Was this a feature that was added after the cameras release?
The one I have is running on firmware 3.0

Mark

[AlterEgo]

Thanks
Definitely sounds like it would be the source of the problem.
I've now gone through the camera menu 3 times and can find no
item where this setting can be adjusted.
Was this a feature that was added after the cameras release?
The one I have is running on firmware 3.0

Mark

[mtomalty]

Got it
Thanks for your patience.
Don't know why I didn't think to look in the ISO menu

Set to 0
Now to shoot the test

Mark

[AlterEgo]

Got it
Thanks for your patience.
Don't know why I didn't think to look in the ISO menu

Set to 0
Now to shoot the test

Mark

note that antishock does not (may be, I sold E-M1 long time ago) work in some (all) burst modes... read the manual about that.

[b_rubenstein]

0 sec delay may not completely alleviate shutter shock. Firmware 4.0, scheduled for release next month, has an all electronic shutter option. This will do away with shutter shock, but introduces distortion for moving subjects.

[AlterEgo]

0 sec delay may not completely alleviate shutter shock.

it is not a genuine EFCS, but 25ms delay - so may be, but as far as I remember it did for all practical purposes (at least unless you have some wobbly double barrel zoom mounted)

Firmware 4.0, scheduled for release next month, has an all electronic shutter option. This will do away with shutter shock, but introduces distortion for moving subjects.

rolling shutter is never a serious option I think it will resort to 10bit raw data just like Sony goes from 13bit to 12bit panasonic m43 sensor (if I recall spec correctly) will go from 12 bit to 10bit

[mtomalty]

Setting the delay to '0' certainly improved the results.
This evening was able to get some extremely sharp images in
The 1/4-1/8 range with the Pana 15 and 25 but earlier was still running into
some issues with the Pana 42.5 at 1/125
Images look decent at 50% but moving in to 100% there is still visible
doubling of subject edges as if things are ever so slightly out of register.

I had an EM-1 for a while last year with all Olympus lenses.
Going back to old files to compare shows no issues.

Is it possible that native lenses take better advantage of in camera stabilization
compared to non-native lenses?

Also,how important is it to set the focal length of the lens in use in the IS meno in the camera.

Next step is to wait for firmware update.

MT

[AlterEgo]

This evening was able to get some extremely sharp images in
The 1/4-1/8 range

this range is outside shutter shock affected range though

[AlterEgo]

was still running into
Is it possible that native lenses take better advantage of in camera stabilization
compared to non-native lenses?

Panasonic lens has OIS and E-M1 has IBIS... I 'd assume E-M1 body shall disable OIS on Panasonic lens, but if not - did you switch it off on the lens just in case ? Power OIS switch to off.

[b_rubenstein]

The IS mode has some effect on SS. I find IS Auto to work best.

Some Panasonic lenses have a OIS ON/OFF switch. For those that don't, go into MENU, Gears, C. Release, and set Lens I.S. Priority to Off for IBIS and On for lens OIS.

[mtomalty]

Thanks for that additional info
The three Panasonic lenses I have do not have the
OIS switch
Will set it up that way tomorrow and see if that further improves things
Still seeing a bit of shake at 1/60,1/125,and 1/200 with the 42.5 mm

Mark
www.marktomalty.com

[b_rubenstein]

You are having SS issues over the usual range of shutter speeds. One thing I've noticed with the three different OM-D model cameras I have is that I have very good IQ at 1/15 sec. for almost all focal length lenses.

[mtomalty]

Just ran another series of tests.
Since shutter shock is the culprit I removed myself from the equation and
worked on a tripod shooting from f2-f11 with both the Oly 45 1.8 and the
Pana 42.5 1.7
Results were same for both so no difference for on and off brand lenses in this case.

Apertures used allowed me to shoot from about 1/500 through to 1/15

Shot the series with IS on and off.
Every frame was critically sharp with no blur or faint secondary image whatsoever with or without IS

Thinking then that since the camera was 100% stationary the problem might be associated with
how IS is working,or not, at critical shutter speeds.

I exposed 5 frames shot at 1/125 (where I am seeing most problems) with IS off and then
5 frames at 1/125 with IS on.
All were handheld

Of the 5 frames with IS off I had 4 critically sharp and 1 with visible camera movement
With IS engaged I ended up with 4 unusable images with detectable movement and
1 frame that was just useable.

Would these results then suggest that shutter shock is not the culprit but rather
how IS is performing in the sensitive shutter speeds

Like you, I get excellent results, handheld, with all lenses with shutter speeds slower
than 1/60

Anyways.......

Mark

[AlterEgo]

Just ran another series of tests.
Since shutter shock is the culprit I removed myself from the equation and
worked on a tripod shooting from f2-f11 with both the Oly 45 1.8 and the
Pana 42.5 1.7
Results were same for both so no difference for on and off brand lenses in this case.

Apertures used allowed me to shoot from about 1/500 through to 1/15

Shot the series with IS on and off.
Every frame was critically sharp with no blur or faint secondary image whatsoever with or without IS

Thinking then that since the camera was 100% stationary the problem might be associated with
how IS is working,or not, at critical shutter speeds.

I exposed 5 frames shot at 1/125 (where I am seeing most problems) with IS off and then
5 frames at 1/125 with IS on.
All were handheld

Of the 5 frames with IS off I had 4 critically sharp and 1 with visible camera movement
With IS engaged I ended up with 4 unusable images with detectable movement and
1 frame that was just useable.

Would these results then suggest that shutter shock is not the culprit but rather
how IS is performing in the sensitive shutter speeds

Like you, I get excellent results, handheld, with all lenses with shutter speeds slower
than 1/60

Anyways.......

Mark

when I had E-M1 and then the firmware version with antishock = 0 was in place already I absolutely did not have any issues with Olympus 45/1.8 or other lenses around the shutter shock prone range of exposure times and I always kept IS on (yes, auto or whatever that parameter was)... I do suggest to visit for example dpreview forums and ask there - much more users who can share their experience... but there is always a possibility that something is wrong with the camera

[Lightsmith]

The EM-1 has a dual shutter design that has caused its owners problems going back to 2012. Mine had the shutter lock up in cold weather, i.e. around 32F degrees and no such problems with the E-M5 which has a more straightforward shutter mechanism.

[Tony Ventouris Photography]

Rumor has it the E-M1 will get Anti-shock 0 and L shutter with the net firmware.  E-M5mkII does have it.  I hope that's true!

[GLJ]

it is not a genuine EFCS, but 25ms delay - so may be, but as far as I remember it did for all practical purposes (at least unless you have some wobbly double barrel zoom mounted)

rolling shutter is never a serious option I think it will resort to 10bit raw data just like Sony goes from 13bit to 12bit panasonic m43 sensor (if I recall spec correctly) will go from 12 bit to 10bit

I do not believe the above is correct. The 0 sec antishock is indeed engaging an EFCS mode.
Also, a drop to 10bit Raw is not a certainty. Some Panasonic cameras do it. Some do not. The Oly EM5II has full electronic shuttering and that does NOT drop to 10bit. The Panasonic GX7 likely uses the same Panasonic sensor as the EM1, and that also does NOT drop to 10bit mode when in e-shutter.

[AlterEgo]

I do not believe the above is correct. The 0 sec antishock is indeed engaging an EFCS mode.

I do not suggest you to believe - I suggest you first to read the relevant topics in dpreview m43 forum (those will be close to 2 years old by now) where this was properly investigated along with recorded timed (in ms) sonograms of how the shutter blades are working.

Also, a drop to 10bit Raw is not a certainty.

for Panasonic sensor used in E-M1 ( http://chipworks.force.com/catalog/ProductDetails?sku=OLY-E-M1_Pri-Camera ) = http://www.semicon.panasonic.co.jp/ds4/MN34230PL_E.pdf = "Electronic shutter (Full scan) : Full scan 10bit mode (22.5 fps) 1 / 22.5s 1 / 81300 s (1/81300 s step)"

this is an official sensor documentation from Panasonic

now camera's firmware might try to mask that when writing the raw, but 10bit is what sensor output - at least what Panasonic itself is saying

as for E-M5 mk II or GX7 - do they use Panasonic 16mp or Sony 16mp sensor ? both exist ...