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FORUMS Sample Photo Archives Lens Sample Photo Archive 
Thread started 30 Mar 2015 (Monday) 22:20
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Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary

 
therobveiller
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Oct 09, 2019 09:56 |  #3901

Immaculens wrote in post #18938483 (external link)
Hi Gang,
Does anyone remember a post several months to a year ago that Sigma dock AF Microadjustment is like 2:1 vs Canon AF Microadjustment?

I do, but in my experience "...is more what you'd call 'guidelines' than actual rules" as Captain Barbossa would say. The value is a good starting point if you have already done MFA via the camera, but there are so many more variables such as multiple focal lengths and also focus distance for each of those focal lengths via the dock, that you are best marking out targets at appropriate distances and adjusting each and every one. Make sure you reset the camera MFA to zero for that lens before you use it to make dock adjustments.
Do bear in mind that the dock settings interact somewhat, so use the "guidlines" quoted as a starting point. Set the intermediary focal length adjustments on the dock to be on a suitable "curve of values" that link the 150 and 600 settings from the original camera MFA (x2), and fine tweak until you get bored. It's well worth it IMHO, but VERY tedious. You will also need (as per camera MFA setting) more than one shot at each of the settings to get a median value for the true setting due to mechanical slop inherent in any lens system.

These are what I got on my 6D which I use as reference for all other bodies I use the lens on. (Sorry, can't get a proper table to show, but you can see the values)
F.L. 2.8m 6m 14m In​f.
150 09 09 08 08
250 11 11 10 10
400 13 13 12 12
600 16 15 14 14


If you use more than one body, DON'T adjust the lens via the dock again, just use very basic MFA on that second/third/... body, keeping just one camera body as a reference for all Sigma dock adjustments.

Hope that helps.




  
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Immaculens
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Oct 09, 2019 10:20 |  #3902

Thanks for your reply, I set my lens via the dock a few years ago but a few months ago I did a +2 in my 7D2 and its bang on. So I asked my question so I could adjust using the dock and set my 7D2 back to -0-.

therobveiller wrote in post #18941222 (external link)
I do, but in my experience "...is more what you'd call 'guidelines' than actual rules" as Captain Barbossa would say. The value is a good starting point if you have already done MFA via the camera, but there are so many more variables such as multiple focal lengths and also focus distance for each of those focal lengths via the dock, that you are best marking out targets at appropriate distances and adjusting each and every one. Make sure you reset the camera MFA to zero for that lens before you use it to make dock adjustments.
Do bear in mind that the dock settings interact somewhat, so use the "guidlines" quoted as a starting point. Set the intermediary focal length adjustments on the dock to be on a suitable "curve of values" that link the 150 and 600 settings from the original camera MFA (x2), and fine tweak until you get bored. It's well worth it IMHO, but VERY tedious. You will also need (as per camera MFA setting) more than one shot at each of the settings to get a median value for the true setting due to mechanical slop inherent in any lens system.

These are what I got on my 6D which I use as reference for all other bodies I use the lens on. (Sorry, can't get a proper table to show, but you can see the values)
F.L. 2.8m 6m 14m In​f.
150 09 09 08 08
250 11 11 10 10
400 13 13 12 12
600 16 15 14 14


If you use more than one body, DON'T adjust the lens via the dock again, just use very basic MFA on that second/third/... body, keeping just one camera body as a reference for all Sigma dock adjustments.

Hope that helps.


Will immaculens.com (external link)

7Dmk II gripped | 5Dc | 150-600 (Σ) OS C | 55-250 IS STM | 100L f/2.8 IS Macro | 15-85 IS | 50 f/1.8 STM | 30 Σ f/1.4 'A'
Learn to love to do well, and you shall. ~ C. Poseidon

  
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Canon100-400
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Oct 10, 2019 14:33 |  #3903

Both male and female, Black-throated-Blue warblers
filling up on Berries, Rockville, Maryland.


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Robert ­ Germans
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Oct 27, 2019 04:04 |  #3904

salita


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Canon M with 22/2 mm and 1DSII and 5DSR with 135L2,0 and 50L1,2 and 24L1,4 olympus omd m10 | olympus zuiko 40-150 Ob. Sigma 150-600mm Contemporary and ob. Sigma 14mm/2,8

  
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Robert ­ Germans
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Oct 27, 2019 04:39 |  #3905

rosa


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Canon M with 22/2 mm and 1DSII and 5DSR with 135L2,0 and 50L1,2 and 24L1,4 olympus omd m10 | olympus zuiko 40-150 Ob. Sigma 150-600mm Contemporary and ob. Sigma 14mm/2,8

  
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Martin.D
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Nov 07, 2019 02:15 |  #3906

Just popping my head in to say Hi!

No longer have this lens but I do miss it on the 5D Mark IV


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Web Site (external link)
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Flickr (external link)
Canon 5D Mark IV + Canon 90D + Glass

  
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ct1co2
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Location: Denver, CO
     
Nov 11, 2019 13:24 |  #3907

Skies in the Denver metro area cleared out in time for the 2nd half of the Transit of Mercury to be visible. Here are a couple of my captures.

Tight crop of Mercury contacting the outer disc of the sun.


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Mercury approaching the outer edge of the sun. Some high clouds moved in, causing the smoky look,


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7D2 | 6D2 | 10-22 | 15-85is | Σ18-35 | Rokinon 14 2.8 | 16-35isL | 24-70isL | 85 1.8 | 100-400 II L | Σ150-600 C | 430ex |

  
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Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary
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