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-   -   High res shot problem (http://e-group.uk.net/forum/showthread.php?t=44231)

super_claret 5th February 2017 02:55 PM

High res shot problem
 
2 Attachment(s)
Hello all.

Just been photographing an original artwork with high res shot (EM5 Mk2) and have come across a problem. The bottom edge of the image seems a lot softer than the top edge (see images attached).

I've run a test as a single shot on both my EM5 Mk2 and EM1 and both are sharp in all 4 corners.

Anyone have any ideas what could be causing this?

Thanks in advance

Wee man 5th February 2017 04:15 PM

Re: High res shot problem
 
Could camera ( sensor) be slightly angled to the plane of the art? Work



Wee Man

super_claret 5th February 2017 04:36 PM

Re: High res shot problem
 
Hi Ed

The camera is perfectly square to the artwork. As I mentioned, I have taken single shots with exactly the same setup and they are sharp all over the frame.

wornish 5th February 2017 04:45 PM

Re: High res shot problem
 
Can you share larger versions of a specific subject taken

a. as a single shot jpg (at the best resolution)
and then
b. exact same target and camera set up ( No other changes ) but taken as a high res jpg shot

Cant really tell from your attached thumbnails.

super_claret 5th February 2017 04:51 PM

Re: High res shot problem
 
Hi Dave, Unfortunately, I can't share the full images due to copyright of the original artwork. The single shot's I've taken are perfectly sharp across the frame.

It's unfortunate that the EM1 doesn't have the high res shot, as that would have been a good comparison between the 2 cameras.

wornish 5th February 2017 04:53 PM

Re: High res shot problem
 
Quote:

Originally Posted by super_claret (Post 405985)
Hi Dave, Unfortunately, I can't share the full images due to copyright of the original artwork. The single shot's I've taken are perfectly sharp across the frame.

It's unfortunate that the EM1 doesn't have the high res shot, as that would have been a good comparison between the 2 cameras.

OK I understand.

Cant you try another target?
Even a picture of some carpet, or some rough cardboard. If there is a difference it will show up.

super_claret 5th February 2017 04:58 PM

Re: High res shot problem
 
Hi Dave, If I find the time, I'll setup a different target, although may not be for a few days.

Clockwork Donkey 5th February 2017 05:18 PM

Re: High res shot problem
 
Assuming you used a tripod, was the IS switched off?

super_claret 5th February 2017 05:36 PM

Re: High res shot problem
 
Quote:

Originally Posted by Clockwork Donkey (Post 405991)
Assuming you used a tripod, was the IS switched off?


In high res shot mode, IBIS is automatically disabled. I disabled it for the single shots.

Clockwork Donkey 5th February 2017 05:45 PM

Re: High res shot problem
 
OK. I've not yet tried HiRes mode. I didn't realise the IBIS switched off automatically. I suppose I should have realised given the way HiRes works.

Beagletorque 5th February 2017 06:52 PM

Re: High res shot problem
 
Was it repeatable? Does it use electronic shutter or mechanical?

thesilverfox 7th February 2017 11:05 AM

Re: High res shot problem
 
I read an article about the hi-res mode the other day, and it cited that the tripod really must be perfectly still and remote (wireless) release was ideal. There were a number of other significant caveats too (link below).

http://www.stevehuffphoto.com/2016/0...y-brad-nichol/

"..fact is pretty much the majority of tripods that photographers are using out there will be practically useless with HR mode. Trust me on this, even the slightest amount of movement will obliterate the advantage of the HR mode and most tripods move at least a little bit, especially those with little mass"

"Note, probably better than the cable release is to use the Olympus smart phone app to trigger the shutter thus eliminating any chance of induced movement"

It might all be something you are well aware of, but I found it an interesting read, in that the feature is hard to get exactly right!

blu-by-u 8th February 2017 03:44 AM

Re: High res shot problem
 
Think that accounts for my trails on getting the moon on HR. At first I thought was the earth's rotation that caused the failure.

Beagletorque 8th February 2017 09:12 AM

Re: High res shot problem
 
I took 85 in a row on a tripod and had no failures.....

http://e-group.uk.net/forum/showpost...1&postcount=30


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