Olympus UK E-System User Group
Olympus UK E-System User Group

Join our unique resource for Olympus Four Thirds E-System DSLR and Pen Micro Four Thirds photographers. Show your images via our free e-group photo gallery. Please read the e-group.uk.net forum terms and conditions before posting for the first time. Above all, welcome!


Go Back   Olympus UK E-System User Group > Cameras, lenses and system accessories > Camera conference > Micro Four Thirds > Olympus OM-D E-M1

Olympus OM-D E-M1 The first Micro Four Thirds camera that offers phase detect focusing so you can use Four Thirds DSLR lenses normally as well a Micro Four Thirds lenses.

Reply
 
Thread Tools Display Modes
  #1  
Old 11th January 2017
PeterMG's Avatar
PeterMG PeterMG is offline
Full member
 
Join Date: Nov 2007
Location: West Sussex
Posts: 18
Thanks: 1
Thanked 3 Times in 1 Post
Likes: 1
Liked 0 Times in 0 Posts
I think my 12-40 F2.8 Pro has an issue

I noted towards the end of last summer that some of my photo's appeared to be blurred in the lower right corner, and initially thought that my technique was becoming sloppy. I'm using the lens on an EM1 and I think its getting worse so I tried my 14-54 from my old E1 which I had used for 2 years on the EM1 against the 12-40 and it was perfect with the 12-40 showing quite noticeable blurring. So I'm thinking my 12-40 has an issue, but is it possible to be out of focus just in one corner, or is it a software issue?

Is the answer I need to calibrate the lens to camera. Seems a bit of a chore if you have to do that. Given this is my only m43 lens and a pro one at that I'm a little disappointed.

Has anyone had a similar experience or know of similar issues?
__________________
Peter

Olympus: EM-1, EPL-2 E-1, E330, FL-50, Zuiko Digital: 11-22, 14-54, 50-200, EC14, MA-1 MMF-3 MF-2 OM1, OM2n, OM4, OM Zuiko 21 f3.5, 24 f2.8, 28 f3.5, 35 f2.8 35-105 f3.5, 50 f1.4, 100 f2.8 135 f3.5, 200 f4, 300 f4.5
Reply With Quote
  #2  
Old 11th January 2017
DerekW DerekW is offline
Full member
 
Join Date: Nov 2007
Location: Hampshire
Posts: 2,362
Thanks: 42
Thanked 270 Times in 208 Posts
Likes: 7
Liked 256 Times in 188 Posts
Re: I think my 12-40 F2.8 Pro has an issue

I do not think that calibrating your camera to the lens will serve any purpose as the lens is focussing on the sensor and not on a mirror.

Does the area of blurring alter with distance and or focal length.

Can you try the lens on another camera.

Depending where you are in West Sussex we could get together to run a test using my camera or go into LCE in Chichester and ask to run a test using one of their cameras.

I am in Waterlooville.
__________________
This space for rent
Reply With Quote
  #3  
Old 11th January 2017
PeterMG's Avatar
PeterMG PeterMG is offline
Full member
 
Join Date: Nov 2007
Location: West Sussex
Posts: 18
Thanks: 1
Thanked 3 Times in 1 Post
Likes: 1
Liked 0 Times in 0 Posts
Re: I think my 12-40 F2.8 Pro has an issue

I first noticed the blurring when taking photo's in my garden. I guess the subject was 10 to 15 or even 20 feet away and given I was at relatively wide angles in good light I was surprised to see anything out of focus. My back to back tests have been done indoors on the edge of a thick hessian mat that gives a lot of fine detain. Distance is about 3 to 4 feet. Problem is very apparent. The EM1 is the only m43 camera I have to hand.
__________________
Peter

Olympus: EM-1, EPL-2 E-1, E330, FL-50, Zuiko Digital: 11-22, 14-54, 50-200, EC14, MA-1 MMF-3 MF-2 OM1, OM2n, OM4, OM Zuiko 21 f3.5, 24 f2.8, 28 f3.5, 35 f2.8 35-105 f3.5, 50 f1.4, 100 f2.8 135 f3.5, 200 f4, 300 f4.5
Reply With Quote
  #4  
Old 11th January 2017
PeterMG's Avatar
PeterMG PeterMG is offline
Full member
 
Join Date: Nov 2007
Location: West Sussex
Posts: 18
Thanks: 1
Thanked 3 Times in 1 Post
Likes: 1
Liked 0 Times in 0 Posts
Re: I think my 12-40 F2.8 Pro has an issue

Three photos, two of the hessian mat and a real world photo of some kittens that show how one side look blurred
Attached Images
File Type: jpg kittens.jpg (62.6 KB, 38 views)
File Type: jpg Q0408738.jpg (84.9 KB, 31 views)
File Type: jpg Q0408750.jpg (76.3 KB, 31 views)
__________________
Peter

Olympus: EM-1, EPL-2 E-1, E330, FL-50, Zuiko Digital: 11-22, 14-54, 50-200, EC14, MA-1 MMF-3 MF-2 OM1, OM2n, OM4, OM Zuiko 21 f3.5, 24 f2.8, 28 f3.5, 35 f2.8 35-105 f3.5, 50 f1.4, 100 f2.8 135 f3.5, 200 f4, 300 f4.5
Reply With Quote
  #5  
Old 11th January 2017
Ricoh Ricoh is offline
Full member
 
Join Date: Apr 2014
Location: Lancashire
Posts: 3,092
Thanks: 356
Thanked 274 Times in 252 Posts
Likes: 333
Liked 845 Times in 501 Posts
Re: I think my 12-40 F2.8 Pro has an issue

Personally I'd say it's difficult to tell from the image samples submitted. I suggest you set up a target (think there are examples on tinternet, and there was a similar thread here on the forum that discussed such matters - do a search) and photograph with the camera normal to the target and on a tripod. Test at different distances and at different apertures within the range. Submit the results here for the more knowledgeable to comment on.
__________________
Steve

on flickr
Reply With Quote
  #6  
Old 30th January 2017
PeterMG's Avatar
PeterMG PeterMG is offline
Full member
 
Join Date: Nov 2007
Location: West Sussex
Posts: 18
Thanks: 1
Thanked 3 Times in 1 Post
Likes: 1
Liked 0 Times in 0 Posts
Re: I think my 12-40 F2.8 Pro has an issue

Took my Lens into Park Cameras in London. It was less than 1 year old and definitely not right. Question mark over it being a "grey" import (not my problem the way I see it but just a fact of life of the global market) but fortunately an Olympus rep was there in the shop and agreed to have it fixed for free. A big thank you to Olympus.

My first ever Pro Lens and its a dud. Probably owned 20 or more lenses in my time, not to mention 4 OM bodies, 2 E system bodies and now 2 EM-1's Just got to find time to used them.
__________________
Peter

Olympus: EM-1, EPL-2 E-1, E330, FL-50, Zuiko Digital: 11-22, 14-54, 50-200, EC14, MA-1 MMF-3 MF-2 OM1, OM2n, OM4, OM Zuiko 21 f3.5, 24 f2.8, 28 f3.5, 35 f2.8 35-105 f3.5, 50 f1.4, 100 f2.8 135 f3.5, 200 f4, 300 f4.5
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Lightroom issue? Walti Software 5 29th July 2016 05:00 PM
Battery Issue! theptyboy Olympus E-1 21 27th July 2014 09:36 PM
Firmware 1.1 issue? gazza95 Olympus OM-D E-M1 5 2nd December 2013 12:35 AM
Power issue throt Olympus E-520 0 2nd September 2012 08:47 AM
HELP! LR4.2 file issue Kiwi Paul Software 5 21st July 2012 02:17 AM


All times are GMT. The time now is 03:33 AM.


The Write Technology Ltd, 2007-2015, All rights reservedAd Management plugin by RedTyger