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Thread started 28 Nov 2014 (Friday) 21:15
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7d mark ii sharp image

 
Snydremark
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Nov 30, 2014 00:52 |  #31

digital paradise wrote in post #17300695 (external link)
Probably that is why they recommend it. It is not easy with my 200. I wonder what those people with a 500mm lens and a 1.4 TC do? 115 feet. I don't think my lot is that deep and I'd have to move the garage over.

Hey lady. Sorry about the the tripod in the back lane. Can you go the other way today? I guess I better stop saving for one :D

I know Lens Align and a few others recommend a minimum of 25X. Not sure what Focal recommends.

Or, how about the 600 + 2x? :p

I'm still curious as to the 'why' of that distance.


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digital ­ paradise
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Nov 30, 2014 01:06 |  #32

Getting late. I''ll try to find that article where they interviewed Chuck Westfall.

Here is Canon's take but I just skimmed through it. On page 6 it states the same thing the manual says. This is a little dated 2011 because it says you can only MA at one focal length. These days it offers W and T.

-Shoot test pictures using the lens(es) you normally use, and at the distances you typically use them. In other words, if you're seeing a consistent focus shift when you shoot group pictures at weddings, don't take test shots of a ruler on your desk with a macro lens.

http://www.learn.usa.c​anon.com …oadjustment_art​icle.shtml (external link)


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Nov 30, 2014 01:18 |  #33

Then here on page 6 it states to use "no less" than 50X the focal length. So which one is it? The normal distances you shoot at or no less than 50X? This is what I have always questioned about MFA. Multiple methods and distance suggestions. The main reason I sent in my 7D2 because it was too far out for me to be confident enough to get it right at all my various shooting distances. I don't mind tweaking it if it needs it.

http://learn.usa.canon​.com …ate_EOS_AF_Quic​kGuide.pdf (external link)


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Nov 30, 2014 01:20 |  #34

digital paradise wrote in post #17300695 (external link)
Probably that is why they recommend it. It is not easy with my 200. I wonder what those people with a 500mm lens and a 1.4 TC do? 115 feet. I don't think my lot is that deep and I'd have to move the garage over.

Hey lady. Sorry about the the tripod in the back lane. Can you go the other way today? I guess I better stop saving for one :D

I know Lens Align and a few others recommend a minimum of 25X. Not sure what Focal recommends.

A professional company that makes body's clean and callibrate lenses here in Holland for canon , are shooting at their mfa targets with the 500mm f + 1.4 Tc from a distance of 7 meters.

Weja


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Nov 30, 2014 01:33 |  #35

Hmmm. At one time a Philippines bird photographer named Romy Ocon (Liquidstone) stated that he MFA'd at the minimum focusing distance. That was several years ago and many be doing something different now.


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DanC.Licks
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Nov 30, 2014 02:40 |  #36

My instinct tells me one should calibrate the MFA at the distance at which the lens is typically used. I generally shoot 600mm at a distance of about 15 to 25 meters, seldom either closer or further away, so that is where I would want to have AF perform at its best.
All academic though, as I only shoot MF.;)




  
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Dec 01, 2014 13:51 |  #37

Weja wrote in post #17300721 (external link)
A professional company that makes body's clean and callibrate lenses here in Holland for canon , are shooting at their mfa targets with the 500mm f + 1.4 Tc from a distance of 7 meters.

Weja

Hey. Could you ask them why they do this? What is their reason for that distance. Thanks


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Dec 01, 2014 15:08 |  #38

DanC.Licks wrote in post #17300776 (external link)
My instinct tells me one should calibrate the MFA at the distance at which the lens is typically used. I generally shoot 600mm at a distance of about 15 to 25 meters, seldom either closer or further away, so that is where I would want to have AF perform at its best.
All academic though, as I only shoot MF.;)

That is what the manual tells us to do.


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Dec 02, 2014 07:06 |  #39

8612images wrote in post #17299508 (external link)
Totally concur

This person took these on expanded with factory settings and Case 1. Erratic movement and as the skiers go side to side there is acceleration and deceleration.

http://www.dpreview.co​m/forums/post/54844970 (external link)


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Dec 02, 2014 07:58 |  #40

digital paradise wrote in post #17300729 (external link)
Hmmm. At one time a Philippines bird photographer named Romy Ocon (Liquidstone) stated that he MFA'd at the minimum focusing distance. That was several years ago and many be doing something different now.

I do remember him posting that. I think I might try that first as I could always back off latter if needed. Thanks for reminding me. :-)




  
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Dec 02, 2014 08:32 |  #41

Vance1 wrote in post #17304167 (external link)
I do remember him posting that. I think I might try that first as I could always back off latter if needed. Thanks for reminding me. :-)

Thanks for that. I was hoping I was not losing it. When you make a claim about a respected photographer like Romy you better have your ducks in a row :oops: That was a few years ago and he may have changed his process.


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Dec 02, 2014 15:04 |  #42

I'm on +8 with my 500mm f/4L IS II and 7D II. This was done at ~25x distance. Too bad it's been raining here I want to go test it out soon.

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Dec 02, 2014 15:55 |  #43

dons wrote in post #17298590 (external link)
=don's;17298590]I saw a thread that pointing about 7d mark ii has a focus issue,
But in the other side, in another thread '7d mark ii owners unite' i saw almost all photo's on that thread a looks amazing and sharp.
The question is, where's a bad focusing system ? Where's a focus issue,.? I didn't see any focusing issue on that baby ..

People generally don't post the out of focus images in the "7d mark ii owners unite" thread, at least I didn't. I posted those that came out sharp.


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Dec 02, 2014 16:01 |  #44

Thorsten wrote in post #17305936 (external link)
People generally don't post the out of focus images in the "7d mark ii owners unite" thread, at least I didn't. I posted those that came out sharp.

Look again because they are there. I edited so I was not misunderstood. Not OOF. There is sharp and then there is crisp.


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Dec 02, 2014 17:34 as a reply to  @ post 17299019 |  #45

My experience was the same. I used a cable release, mirror lock-up, a tripod and several different lenses. The results were all the same. The images appear soft and in no way compare to my 5DIII. I returned the camera. Solving the issue with MFA does not seem reasonable with a brand new camera. I will pass on the 7DII.


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