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 and OM-D 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!


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Foto Fair Post your photos for friendly, non-critical feedback. This is the place to show pictures if you aren't yet ready for full-blooded critique, or simply want to share an interesting picture with other e-group visitors.

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  #31  
Old 24th October 2013
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OlyPaul OlyPaul is offline
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Re: More Brighton with EM-1

Ok I'm going to be perceived as the bad guy here but here goes.

Normally and including these pics I will not make a comment on sharpness from web sized pics unless they are obviously out of focus or soft, and these pics do not come into that catagory for me, nor will I make comments like great dynamic range which is impossible to see in a small highly compressed jpeg image.

But having said that after Ian's 100% crop post I have to agree with the poster that it is not tack sharp at least not to my standards for a 100% crop. None of it is tack sharp the face is not sharp and if focused there I would expect to see the hairs in the eyebrows sharp, if focused on the hands they would be sharper.

Now I do not know the settings or lens used as Ian does not include exif info in his pics, is it camera shake or is it the camera or is it the processing I do not know, I just know it is not as sharp as I would expect for oly glass and good technique.

I tried to find a similar image for comparison with a person the same size in the frame, this is the closest I could come up with taken with the E-M5 .

Notice you can see the individual hairs in the eyelashes and eyebrows.





I have dumped a lot of images that were not sharp due to my old shakey hands even with the E-PL5 but less of them since using the E-M5.

Just my opinion Ian and I hope I have not offended you, if you had not posted the 100% crop I would not have commented except to say i like them.
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  #32  
Old 26th October 2013
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Re: More Brighton with EM-1

RE thread
Camera conferance-OM-D EM-1-Camera lockup information
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  #33  
Old 26th October 2013
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Re: More Brighton with EM-1

Quote:
Originally Posted by OlyPaul View Post

I tried to find a similar image for comparison with a person the same size in the frame, this is the closest I could come up with taken with the E-M5 .

Notice you can see the individual hairs in the eyelashes and eyebrows.
I'm a little confused about what we are actually discussing here - can anyone help me?

Ian's image took a crop from the foreground of an image with about 1 mile dof; don't know where it was focused or even what the settings were; but I'm guessing that that individual wasn't the specific focus point (although if FD focus was on it might have been! As such there are at least 2 elements in play on the perceived sharpness - 1. the use of dof rather than the specific focus point to deliver a sharp image and 2. the potential for difraction to play a part given the apparent dof achieved the image could well be shot at f8 or greater.

Your image, Paul, illustrates all of this well - the eyes of the girl cropped are in focus and crisp; but the girl behind looks 'soft'; which isn't a sharpness issue at all of course!

The only image appropriate for a discussion on camera and lens sharpness is a single plane, in focus, image. Preferably a proper test image.

But then again I'm not sure exactly what the issue being raised is - Carlos is now referencing a thread on camera lock-ups.....
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  #34  
Old 26th October 2013
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Re: More Brighton with EM-1

While I understand what you are saying and I do not disagree,you have to realise that whatever the aperture or DOF there is only one point of focus and it is there where focus will be sharpest.

Only Ian knows what the aperture was or where the point of focus was, it could be two thirds into the image for hyper focal focusing if that is what Ian chose to do for maximum DOF, in which case the second person in the shot would be the sharpest part of the image.

But as the 100% crop Ian posted was of the foreground figure which is the main subject of the image I presumed that was the point of focus and that was what I based my comment on and if you think that is sharp enough then fine and perhaps my standards of sharpness are to high.
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  #35  
Old 27th October 2013
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Phill D Phill D is offline
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Re: More Brighton with EM-1

Paul I'm not sure I can add anything to this debate but I do have a question for you about the lovely image you posted. You featured the girl centre but to my eye she doesn't look quite as sharp as the two girls either side of her. How is that possible? is it just my eyes or a trick of the contrast in the image? The hair on the little girl with her eyes closed to the right looks to be the sharpest to me.
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  #36  
Old 27th October 2013
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Re: More Brighton with EM-1

Quote:
Originally Posted by Phill D View Post
Paul I'm not sure I can add anything to this debate but I do have a question for you about the lovely image you posted. You featured the girl centre but to my eye she doesn't look quite as sharp as the two girls either side of her. How is that possible? is it just my eyes or a trick of the contrast in the image? The hair on the little girl with her eyes closed to the right looks to be the sharpest to me.
Hi Phill, yes it is your eyes or a trick of the light and the reason you should never trust web sized images for evaluating image quality.

The image was a grab shot taken at f4 @ 1/400sec on the 17mm lens and just the centre point af was active. F8 may have helped to get the other two sharper.

Even though the girls are almost in the same plane of focus there can only be one point of focus that is sharpest.

100% crops of each girls head should answer your question.



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  #37  
Old 27th October 2013
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Re: More Brighton with EM-1

Methinks my original sharing of images has turned into debate about sharpness, DOF, point of focus etc!
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  #38  
Old 2nd December 2013
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Re: More Brighton with EM-1

Hi from Italy ! I have done a extensive series of shot comparing em5 and 2 bodies em1 because from the first shot I had the impression of blurry images from the em1,with all lenses at determinate shutter speed...
After 1000 shot I realize that my 2 em1 suffer from shutter shock!
At 1/10 images are very sharp,from 1/50 to 1/250 ar ever blurried....on tripod with is off this problem doesn't exist,but hand helded,with all lenses from 12 f2,17 1.8 ,25 leica,45 1.8 ,75 1.8 and also pana 35 100 with is on the lens ...
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  #39  
Old 2nd December 2013
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Re: More Brighton with EM-1

here some example from raw inalterated in lightroom just to see crop comparison


7.jpg
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  #40  
Old 2nd December 2013
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Em1 shutter shock

Ok I cant link url with flick set,i will write a private message to carlos...
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  #41  
Old 2nd December 2013
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shutter shock

i will post flick link when I reached permission to do

5.jpg
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  #42  
Old 2nd December 2013
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Re: More Brighton with EM-1

an other sample


8.jpg
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  #43  
Old 2nd December 2013
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Shutter shock in em1

crop from em1 at various shutter speed


1.jpg
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  #44  
Old 2nd December 2013
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Flick link to the Em1 Shutter Shock test

Finally I can post the link for watch bigger in flick...thanks for the attention from Italia

http://www.flickr.com/photos/melodyc...57638291707853
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