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Occasional Contributor
Posts: 14
Registered: ‎02-20-2021

Re: Inconsistent Sharpness Issue withCanon 5d Mark iv

SipnSnap#2-02-2021-Kristin_Boyer_IMG-2992.jpg

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Occasional Contributor
Posts: 14
Registered: ‎02-20-2021

Re: Inconsistent Sharpness Issue withCanon 5d Mark iv

Yes!  Totally willing and SO very very appreciative of your help!!!  I have been dealing with this for a year and can NOT seem to figure it out.  I will upload to dropbox and come back here with the link.  These are all SOOC and will upload the RAW to dropbox.  Thank you!!!   HUGE HUGE thank yoU!! 

Honored Contributor
Posts: 7,670
Registered: ‎11-13-2012

Re: Inconsistent Sharpness Issue withCanon 5d Mark iv

Does it seem to happen with all lenses or just the 24-70?

John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic
Occasional Contributor
Posts: 14
Registered: ‎02-20-2021

Re: Inconsistent Sharpness Issue withCanon 5d Mark iv

That is a great question. 24-70 is my go to lens so that is what I primarily shoot with. I am going to go look at my 70-200 images and see if it does the same thing.

here is the dropbox link: https://www.dropbox.com/sh/yyyo5lx30lsusu8/AABamoCdILoG4D5qNA6zIVxHa?dl=0
Occasional Contributor
Posts: 14
Registered: ‎02-20-2021

Re: Inconsistent Sharpness Issue withCanon 5d Mark iv

Ok - I had to go back to August of 2020 as that was the last time I used my 70-200... I don't see the issue in August w/ my 70-200 But I make a practice oout of deleting "bad" images and only keeping the good ones for my clients.  So, it is hard to tell if I had the issue or not with the 70-200.  As a side note, I am fairly certain that I had it even when I rented a a 24-70 lens in the fall as a backup because I was having such issues.  You bring up a good point... this 24-70 lens has seen ALOT of wear and tear....  I use it very heavily.  Maybe it is worn out? 

Valued Contributor
Posts: 358
Registered: ‎02-23-2020

Re: Inconsistent Sharpness Issue withCanon 5d Mark iv

In looking at the metadata, it states you were using a "pattern" metering mode.  Is that evaluative?  How many focus points do you recall having on the images as you took them?   I'm wondering if multiple points were being used and it just grabbed focus on a point other than on the eyes.

--
Ricky

EOS 5D IV, 50mm f/1.2L, 135mm f/2L, 600EX-RT (x6), ST-E3-RT, Vixia HF G50
Honored Contributor
Posts: 7,670
Registered: ‎11-13-2012

Re: Inconsistent Sharpness Issue withCanon 5d Mark iv

The cmaera is reporting the same info on both groups of images.

1.jpg

2.jpg3.jpg4.jpg

 

The only thing I can think of is that these subjects aren't what I would consider requiring AI Servo. As you no doubt know, AI Servo senses subject motion as you initially acquire focus via a 1/2 press of the shutter button and then predicts where the subject will be when the shutter fires.

 

If the subject is stationary and you are perhaps moving the camera slightly it may result in an incorrect prediction - the subject didn't really move but the camera predicted it would.

 

That's just my thoughts. Maybe some other folks can jump in.

John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic
Reputable Contributor
Posts: 597
Registered: ‎10-21-2016

Re: Inconsistent Sharpness Issue withCanon 5d Mark iv


@jrhoffman75 wrote:

 

The only thing I can think of is that these subjects aren't what I would consider requiring AI Servo. As you no doubt know, AI Servo senses subject motion as you initially acquire focus via a 1/2 press of the shutter button and then predicts where the subject will be when the shutter fires.

 

If the subject is stationary and you are perhaps moving the camera slightly it may result in an incorrect prediction - the subject didn't really move but the camera predicted it would.

 

That's just my thoughts. Maybe some other folks can jump in.


I think that is very likely, going by the the thumbnails in the original screenshots the OP is using the camera in machine gun mode and I guess handheld so AI servo is struggling with this combination.

VIP
Posts: 11,272
Registered: ‎08-13-2015

Re: Inconsistent Sharpness Issue withCanon 5d Mark iv


@KBoyerPhotos wrote:

Ok - I had to go back to August of 2020 as that was the last time I used my 70-200... I don't see the issue in August w/ my 70-200 But I make a practice oout of deleting "bad" images and only keeping the good ones for my clients.  So, it is hard to tell if I had the issue or not with the 70-200.  As a side note, I am fairly certain that I had it even when I rented a a 24-70 lens in the fall as a backup because I was having such issues.  You bring up a good point... this 24-70 lens has seen ALOT of wear and tear....  I use it very heavily.  Maybe it is worn out? 


At first glance, I would point out that you are not using the most accurate AF point(s) in the camera.

 

1F84EEE2-BF31-42D4-A9C3-DE6043E6C1CA.jpeg

 

Both of our lenses are "Group A" lenses.  This lens group yields the highest performance.

 

701A67E7-D7B7-4BF6-B23D-5C48AF58B408.jpeg

 

I do agree that your images could be sharper than how they appear to be.  The softness in the above images seems to be evenly distributed on the subject, which leads me to conclude that DoF is not an issue.  But, camera shake could be.

 

One Shot AF is faster and more accurate than AI Servo.  When taking portraits of still subjects, the subject must learn how to remain still, or freeze in place, until the picture is taken.

----------------------------------------------------------------------------------------------------------------------------------------------------------

"Doctor told me to get out and walk, so I bought a Canon."
Occasional Contributor
Posts: 14
Registered: ‎02-20-2021

Re: Inconsistent Sharpness Issue withCanon 5d Mark iv

Thank you all so very much for your input and research.   I typically shoot schools and young children and families so shooting fast and with subjects that move is a priority.  I will research the focal points show below and see if I can't figure out what is going on.  It is literally making me crazy.  Smiley Sad 

 

Thanks again to all of you for your help. If you think of anything else, I would love to hear it and open to any conversations or tips you might have! Smiley Happy

 

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