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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 12 Sep 2019 (Thursday) 14:42
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-= 90D owners unite! Discuss and Post Photos

 
David_Wales
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Feb 24, 2020 23:37 as a reply to  @ post 19015752 |  #1561

Thank you for response.

I will certainly redo my calibration based on your suggestion.

Much appreciated.

David




  
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John ­ Sheehy
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Feb 25, 2020 08:53 |  #1562

DreDaze wrote in post #19015480 (external link)
live view doesn't take into affect any focus mistakes...it uses a different type of AF, so it will always be right on...you need to adjust it through the viewfinder

i think a quick easy test is a live view shot, and then a through the viewfinder shot...if they don't line up something is off

There are lenses, though, that have slightly different focus distances wide open, vs stopped down for exposure. I wonder if there can still be problems with that in sensor AF.




  
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pknight
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Feb 25, 2020 10:24 |  #1563

DreDaze wrote in post #19015480 (external link)
live view doesn't take into affect any focus mistakes...it uses a different type of AF, so it will always be right on...you need to adjust it through the viewfinder

i think a quick easy test is a live view shot, and then a through the viewfinder shot...if they don't line up something is off

You are correct that if the AF through the OVF is different than the AF in Live View, something is off, but what does the Live View add to the process of calibrating the OVF AF? If the OVF AF is not in focus, that is all you need to know that something is off. Unless you are suggesting the use of the Live View image to judge the sharpness of the OVF image. Perhaps some might find that helpful. I suspect that most know what sharp focus looks like.


Digital EOS 90D Canon: EF 50mm f/1.8 II, EF 50mm f/2.5 Compact Macro, Life-Size Converter EF Tamron: SP 17-50mm f/2.8 DiII, 18-400mm f/3.5-6.3 DiII VC HLD, SP 150-600 f/5-6.3 Di VC USD G2, SP 70-200 f/2.8 Di VC USD, 10-24mm f/3.5-4.5 DiII VC HLD Sigma: 30mm f/1.4 DC Art Rokinon: 8mm f/3.5 AS IF UMC

  
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Archibald
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Feb 25, 2020 10:35 |  #1564

pknight wrote in post #19016122 (external link)
You are correct that if the AF through the OVF is different than the AF in Live View, something is off, but what does the Live View add to the process of calibrating the OVF AF? If the OVF AF is not in focus, that is all you need to know that something is off. Unless you are suggesting the use of the Live View image to judge the sharpness of the OVF image. Perhaps some might find that helpful. I suspect that most know what sharp focus looks like.

Put camera on tripod - focus on contrasty subject in good light using live view - then half-press the shutter button (or BBF). If the focus shifts, the viewfinder AF is not optimal.


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DreDaze
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Feb 25, 2020 21:04 |  #1565

pknight wrote in post #19016122 (external link)
You are correct that if the AF through the OVF is different than the AF in Live View, something is off, but what does the Live View add to the process of calibrating the OVF AF? If the OVF AF is not in focus, that is all you need to know that something is off. Unless you are suggesting the use of the Live View image to judge the sharpness of the OVF image. Perhaps some might find that helpful. I suspect that most know what sharp focus looks like.

i feel like something could not be in perfect focus and still appear sharp...with live view you know what the optimal sharpness would be


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DreDaze
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Feb 25, 2020 21:50 |  #1566

IMAGE: https://live.staticflickr.com/65535/49579846042_2ea350b2a8_c.jpg
IMAGE LINK: https://flic.kr/p/2ixc​ETL  (external link) p-week8_20_0253bw (external link) by andre gregoire (external link), on Flickr

IMAGE: https://live.staticflickr.com/65535/49586466957_8333e65094_b.jpg
IMAGE LINK: https://flic.kr/p/2ixM​B4t  (external link) p-week8_20_0434 (external link) by andre gregoire (external link), on Flickr

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Feb 25, 2020 21:52 |  #1567

Great shots!

And a B/W pic that to me looks to work better that way than in color. :-)


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Feb 25, 2020 23:16 |  #1568

Archibald wrote in post #19016500 (external link)
Great shots!

And a B/W pic that to me looks to work better that way than in color. :-)

thanks...there wasn't much color to it even in color :)


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Feb 26, 2020 09:34 |  #1569

Archibald wrote in post #19016136 (external link)
Put camera on tripod - focus on contrasty subject in good light using live view - then half-press the shutter button (or BBF). If the focus shifts, the viewfinder AF is not optimal.

Gotcha.


Digital EOS 90D Canon: EF 50mm f/1.8 II, EF 50mm f/2.5 Compact Macro, Life-Size Converter EF Tamron: SP 17-50mm f/2.8 DiII, 18-400mm f/3.5-6.3 DiII VC HLD, SP 150-600 f/5-6.3 Di VC USD G2, SP 70-200 f/2.8 Di VC USD, 10-24mm f/3.5-4.5 DiII VC HLD Sigma: 30mm f/1.4 DC Art Rokinon: 8mm f/3.5 AS IF UMC

  
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Feb 26, 2020 13:44 as a reply to  @ DreDaze's post |  #1570

#1 is a stunner!! Well done!


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Feb 27, 2020 09:27 |  #1571

No crop

IMAGE: http://okanaganwildlifephotography.com/20/IMG_2090-1_0161-a.jpg

50% crop

IMAGE: http://okanaganwildlifephotography.com/20/IMG_2090-1_0161-a50c.jpg

100% crop

IMAGE: http://okanaganwildlifephotography.com/20/IMG_2090-1_0161-a100c.jpg

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Post edited over 1 year ago by Archibald.
     
Feb 27, 2020 21:01 |  #1572

Roseate Spoonbill. (90D.)

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David_Wales
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Feb 27, 2020 23:44 |  #1573

Little Egret: 90D Sigma 150-600mm Contemporary, centre-weighted metering, still a soft image after first lens calibration, but work in progress:


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Tufted Duck: 90D Canon 100-400mm f4.5-5.6 is usm mkii spot metering, calibration and settings still need refining further, believe its still front focusing slightly, but getting there:


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Becoming happier with 90D as time goes by. Both images handheld.



  
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Archibald
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Feb 27, 2020 23:52 |  #1574

David_Wales wrote in post #19017809 (external link)
Little Egret: 90D Sigma 150-600mm Contemporary, centre-weighted metering, still a soft image after first lens calibration, but work in progress:


thumbnail
Hosted photo: posted by David_Wales in
./showthread.php?p=190​17809&i=i79032402
forum: Canon EOS Digital Cameras


Tufted Duck: 90D Canon 100-400mm f4.5-5.6 is usm mkii spot metering, calibration and settings still need refining further, believe its still front focusing slightly, but getting there:


thumbnail
Hosted photo: posted by David_Wales in
./showthread.php?p=190​17809&i=i17035180
forum: Canon EOS Digital Cameras


Becoming happier with 90D as time goes by. Both images handheld.

Looks like progress. It is a bit puzzling why the first is a bit soft. You had a great subject to focus on. Maybe try again when the light is brighter, and with a higher shutter speed.


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Feb 28, 2020 19:15 as a reply to  @ David_Wales's post |  #1575

Looks like the light and the moisture in the air were bouncing off of each other. Been there. Not much you can do..


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