Panasonic 14-42mm f3.5-5.6 II problem. Help Please

Colourise wrote:

Hi

I should be grateful for some advice, please.

I am using a Panasonic 14-42mm f3.5-5.6 II on an Olympus EM-10 and find that when the lens is zoomed hard (there is no further available movement of the zoom ring) to the 42mm position, the display in the viewfinder sometimes shows 40mm and the EXIF data also shows 40mm.

On other occasions the display and EXIF data correctly show the 42mm setting.

Has anyone else experienced this type of behaviour before and does this suggest that it is an incompatibility issue or could the lens be faulty?

The lens is new

Thanks

Since I don't have the EM-10, I cannot give you an answer but I do have the Panasonic 14-42mm f3.5-5.6 II and use it on my Olympus EPL-7 without any issues. The EPL-7 from my understanding is very similar to the EM-10. Maybe someone else will chime in who has used that lens on the EM-10.

GR

grcolts wrote:

Colourise wrote:

Hi

I should be grateful for some advice, please.

I am using a Panasonic 14-42mm f3.5-5.6 II on an Olympus EM-10 and find that when the lens is zoomed hard (there is no further available movement of the zoom ring) to the 42mm position, the display in the viewfinder sometimes shows 40mm and the EXIF data also shows 40mm.

On other occasions the display and EXIF data correctly show the 42mm setting.

Has anyone else experienced this type of behaviour before and does this suggest that it is an incompatibility issue or could the lens be faulty?

The lens is new

Thanks

Since I don't have the EM-10, I cannot give you an answer but I do have the Panasonic 14-42mm f3.5-5.6 II and use it on my Olympus EPL-7 without any issues. The EPL-7 from my understanding is very similar to the EM-10. Maybe someone else will chime in who has used that lens on the EM-10.

GR

Thanks for the reply.

That's very useful information

Sigurthr wrote:

timo wrote:

With OIS it won't be an issue, but IBIS needs focal length data for calibrating IBIS before every shot.

I doubt if a 2mm discrepancy is going to make any practical difference.
--
Tim

http://timauger.smugmug.com (click browse)
http://timauger.blogspot.sg/

That would be a good thing for the OP to experiment with test shots and find out. Just manually set the FL info and use a stationary subject with fixed lighting. Though, it's hard to get any consistency with camera shake.

This is all very useful information, thanks for taking the time to respond

i dont think its of any real significance.. everything will still work okay..

its just a tiny read out variation..

trog

Colourise wrote:

Hi

I should be grateful for some advice, please.

I am using a Panasonic 14-42mm f3.5-5.6 II on an Olympus EM-10 and find that when the lens is zoomed hard (there is no further available movement of the zoom ring) to the 42mm position, the display in the viewfinder sometimes shows 40mm and the EXIF data also shows 40mm.

On other occasions the display and EXIF data correctly show the 42mm setting.

Has anyone else experienced this type of behaviour before and does this suggest that it is an incompatibility issue or could the lens be faulty?

The lens is new

Thanks

What does the camera read the focal length at at the widest setting? Is it also out of calibration there (try zooming in by 2mm and see if it changes where it should). I would hazard a guess that either the system that reports the zoom position is either mis-calibrated or the sensor is not working perfectly when it is at the long limit.

Ultimately, I doubt a 2mm discrepancy will make any practical difference to the IS system or anything. so I probably wouldn't worry about it myself.

Narcosynthesis wrote:

Colourise wrote:

Hi

I should be grateful for some advice, please.

I am using a Panasonic 14-42mm f3.5-5.6 II on an Olympus EM-10 and find that when the lens is zoomed hard (there is no further available movement of the zoom ring) to the 42mm position, the display in the viewfinder sometimes shows 40mm and the EXIF data also shows 40mm.

On other occasions the display and EXIF data correctly show the 42mm setting.

Has anyone else experienced this type of behaviour before and does this suggest that it is an incompatibility issue or could the lens be faulty?

The lens is new

Thanks

What does the camera read the focal length at at the widest setting? Is it also out of calibration there (try zooming in by 2mm and see if it changes where it should). I would hazard a guess that either the system that reports the zoom position is either mis-calibrated or the sensor is not working perfectly when it is at the long limit.

Ultimately, I doubt a 2mm discrepancy will make any practical difference to the IS system or anything. so I probably wouldn't worry about it myself.

The camera does read 14mm at the wide end, and when zooming in does change by a couple to mm to read 16mm.

Interestingly I managed to try the EM-10 with a Panasonic 14-45mm f3.5-5.6 and the camera read the focal length correcttly at both ends of the zoom range.

I take your point about the IS system.

Thanks for your input