Canon Community Canon Community
 


Reply
Respected Contributor
Posts: 1,967
Registered: ‎02-26-2015

Re: Upgrade what equipment first?


@RobertTheFat wrote:


'Taint so. I've used AFMA on several 3rd-party lenses. The camera doesn't identify them by brand name, but it does recognize them.

 

That's an apples vs oranges comparison anyway. What DPP doesn't recognize are 3rd-party lens distortion corrections, which have nothing to do with AFMA.

 

The rest of your explanation of the Sigma Dock (the part I didn't quote) does, of course, answer my question.


While you can AF micro adjust 3rd party lenses sometimes they are beyond the range of adjustment.

 

The first 3rd party lens I got for my 50D was a Sigma 70-200 f/2.8. It was near the limit of AF micro adjustment on my 50D. When I purchased my 7D it was beyond the range of adjustment for that camera. I sent it into Sigma and had them calibrate the lens. After Sigma calibrated it, it was spot on with both my 7D and my XTi which didn't have AF micro focus adjustment. It still required a small adjustment on the 50D, but, was much closer than before.

VIP
Posts: 8,346
Registered: ‎08-13-2015

Re: Upgrade what equipment first?


@RobertTheFat wrote:

@Waddizzle wrote:

@RobertTheFat wrote:

@Waddizzle wrote:
...
Good thing the Sigma has the Sigma Dock, so that I could tune the lens with AFMA.  I've been testing and tweaking if for over a year now.  That was shot with a 6D 1/2000, f/8, ISO 5000, ..., I think.  I'm not using the right PC to check the exposure.  

Why do you need the Sigma Dock? Doesn't the 6D have in-camera AFMA?


Canon camera bodies do not recognize third party lenses, just as DPP doesn't recognize them, either.  ....


'Taint so. I've used AFMA on several 3rd-party lenses. The camera doesn't identify them by brand name, but it does recognize them.

 

That's an apples vs oranges comparison anyway. What DPP doesn't recognize are 3rd-party lens distortion corrections, which have nothing to do with AFMA.

 

The rest of your explanation of the Sigma Dock (the part I didn't quote) does, of course, answer my question.


Misidentifying the lens is the same as not identifying the lens in my book, IMHO. 

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

"I don't rent software. I use Photoshop CS6, ACR 9.8 and Lightroom 6.8 ."
VIP
Posts: 8,346
Registered: ‎08-13-2015

Re: Upgrade what equipment first?


@TTMartin wrote:

@RobertTheFat wrote:


'Taint so. I've used AFMA on several 3rd-party lenses. The camera doesn't identify them by brand name, but it does recognize them.

 

That's an apples vs oranges comparison anyway. What DPP doesn't recognize are 3rd-party lens distortion corrections, which have nothing to do with AFMA.

 

The rest of your explanation of the Sigma Dock (the part I didn't quote) does, of course, answer my question.


While you can AF micro adjust 3rd party lenses sometimes they are beyond the range of adjustment.

 

The first 3rd party lens I got for my 50D was a Sigma 70-200 f/2.8. It was near the limit of AF micro adjustment on my 50D. When I purchased my 7D it was beyond the range of adjustment for that camera. I sent it into Sigma and had them calibrate the lens. After Sigma calibrated it, it was spot on with both my 7D and my XTi which didn't have AF micro focus adjustment. It still required a small adjustment on the 50D, but, was much closer than before.


Exactly.  My Sigma 150-600 was not only beyond the range of adjustment, the camera thought it was some Canon lens model.  This focusing error is exactly why I sold the 150-500, and bought the 150-600 and the Sigma Dock.  I started to send the 150-600mm lens to Sigma, but the only address I could find for Sigma USA was #I WTC, One World Trade Center.

Guess what brand of lens I will never buy again.  Sigma.

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

"I don't rent software. I use Photoshop CS6, ACR 9.8 and Lightroom 6.8 ."
Highlighted
VIP
Posts: 11,353
Registered: ‎12-07-2012

Re: Upgrade what equipment first?

[ Edited ]

Two things.

First send the Sigma in.  They have upgraded their CS a whole lot.  Not to Canon level or standard but certainly better than it once was.

Second, the dock allows firmware updates by the lens owner in addition to focus speed and others.  I don't believe that was mentioned.

 

IMHO, I think you got a bad copy.  My four current big Sigma zooms do no display what yours seems to.  You can get a bad copy of anybodies lens. Not just Sigma's!  I have owned about a dozen of the big Siggies.

 

I do know it is possible to get bad copies because I went through three Sigma 150-500mm f/5-6.3 APO DG OS HSM Lens before I got the one I currently have.  It is very good and I have no AFMA correction done on either camera I use it on.

 

SIGMA CORPORATION OF AMERICA

Attn: Service Department
15 Fleetwood Court
Ronkonkoma, NY 11779

EOS 1DX and 1D Mk IV and several lenses!
powered by Lithium

LIKE US on Facebook FOLLOW US on Twitter WATCH US on YouTube CONNECT WITH US on Linkedin WATCH US on Vimeo FOLLOW US on Instagram SHOP CANON at the Canon Online Store
© Canon U.S.A., Inc.   |    Terms of Use   |    Privacy Statement