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Archive 2017 · Sigma 135 1.8 thoughts? AF functionality

  
 
Ken_Cravillion
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p.2 #1 · Sigma 135 1.8 thoughts? AF functionality


With my phone and my bony knees! Also have the RRS L plate attached.

Fred Miranda wrote:
Sony shooters are getting EyeAF and Image stabilization with this lens. Two features not offered to Canon or Nikon and this lens was designed for them!

Ken,
Can you post a picture showing the Sigma 135/1.8 with MC-11? Thanks for the samples!
Fred









Apr 16, 2017 at 01:44 PM
drewle
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p.2 #2 · Sigma 135 1.8 thoughts? AF functionality


Hi Everyone -- This is my first post in a long while. Happy day to y'all.

I took delivery of a Canon-mount 135A with MC-11 last week. With latest firmware running on the lens, the dock software/MC-11, and my A7R2, I'm experiencing a lot of maddening AF hiccups when my subject is approximately 12+ feet away. It seems to front-focus heavily. However, nearer than 12-ish feet, it's spot on. And like Ken above, Eye-AF is spot on at closer distances. This was experienced in slightly-overcast daylight, shot wide-open, and true for both AF-S and AF-C. I'm also experiencing a lot of focus-racking, where it would spin the entire range of focus from MFD to infinity, then back again, only to fail to achieve focus.

Nonetheless, when this lens/adapter/A7R2 combo hits, it really sings. Holy moly, it's sharp.

Bokeh is lovely, but could probably be lovelier if I had remembered to disable first-curtain e-shutter (especially since I was shooting in the 1/4000+ range). Initially, I felt that the 85GM's bokeh was a tad creamier -- less "edgy" -- but I need to do some controlled tests to be certain.

On a side note, I also own a 5DIV and the 135A performs absolutely impeccably on it out of the box. I had almost decided to sell off what's left of my Canon system, but the 135A is currently doing better on it than on my A7R2.

I hope this info helps. I'd be interested to see if anyone else is experiencing similar hiccups with the 135A/MC-11 combo.

Cheers!



Apr 16, 2017 at 01:57 PM
GMPhotography
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p.2 #3 · Sigma 135 1.8 thoughts? AF functionality


Lens hood is huge. I'll get a metal screw inhood.


Apr 16, 2017 at 02:40 PM
GMPhotography
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p.2 #4 · Sigma 135 1.8 thoughts? AF functionality


This is when I would try reloading firmware. Worth a try

drewle wrote:
Hi Everyone -- This is my first post in a long while. Happy day to y'all.

I took delivery of a Canon-mount 135A with MC-11 last week. With latest firmware running on the lens, the dock software/MC-11, and my A7R2, I'm experiencing a lot of maddening AF hiccups when my subject is approximately 12+ feet away. It seems to front-focus heavily. However, nearer than 12-ish feet, it's spot on. And like Ken above, Eye-AF is spot on at closer distances. This was experienced in slightly-overcast daylight, shot wide-open, and true for both AF-S and AF-C. I'm also experiencing a lot of
...Show more



Apr 16, 2017 at 02:41 PM
bjornthun
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p.2 #5 · Sigma 135 1.8 thoughts? AF functionality


Latest firmware for the MC-11 is version 1.04.

Mounts EF-E
Ver.1.04
Update Date 2017.03.21
● It has become compatible with the SIGMA 135mm F1.8 DG HSM | Art and SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary.



Apr 16, 2017 at 03:32 PM
GabrielPhoto
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p.2 #6 · Sigma 135 1.8 thoughts? AF functionality


GMPhotography wrote:
We have no Sony users yet it seems. Guinea pig time.

Oh I got it already
Eye AF is working fine..not as fast as native but surely working fine and it is indeed razor sharp.
I am planning a shoot today or tomorrow depending on weather and models, to compare:
Sigma 135mm F1.8
Sony 135mm STF
Sony 100mm STF
Sony 85mm 1.4

Plus I got my hands on the 70-200mm GM to compare to my Canon 7-200 2.8 IS ii and a biggie Canon EF 300mm 2.8 for massive bokeh comparisons
I just need time and weather to cooperate.
Here is a quick sample I did comparing to the 100mm stf. Of course, the real test is coming soon!

https://c1.staticflickr.com/3/2847/33268770563_a24affc9ef_h.jpg
https://c1.staticflickr.com/3/2815/34079978535_ea66f2950b_h.jpg




Apr 16, 2017 at 04:06 PM
GMPhotography
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p.2 #7 · Sigma 135 1.8 thoughts? AF functionality


You da Man. Thanks for the report. Getting exciting


Apr 16, 2017 at 04:18 PM
GMPhotography
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p.2 #8 · Sigma 135 1.8 thoughts? AF functionality


Thanks I'll keep eye on what's loaded

bjornthun wrote:
Latest firmware for the MC-11 is version 1.04.

Mounts EF-E
Ver.1.04
Update Date 2017.03.21
● It has become compatible with the SIGMA 135mm F1.8 DG HSM | Art and SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary.




Apr 16, 2017 at 04:19 PM
GMPhotography
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p.2 #9 · Sigma 135 1.8 thoughts? AF functionality


The STF lens becomes too slow for me but seeing the comparison will be interesting


Apr 16, 2017 at 04:20 PM
AGeoJO
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p.2 #10 · Sigma 135 1.8 thoughts? AF functionality


shaolin95 wrote:
Here is a quick sample I did comparing to the 100mm stf. Of course, the real test is coming soon!


Which is which, please? The first one with the Sigma, I assume?



Apr 16, 2017 at 04:21 PM
GabrielPhoto
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p.2 #11 · Sigma 135 1.8 thoughts? AF functionality


AGeoJO wrote:
Which is which, please? The first one with the Sigma, I assume?


Yep, you got it right. I decided to get the 135mm STF to see how it compares to the new 100mm and to a normal but fast 135mm like the sigma.



Apr 16, 2017 at 04:24 PM
GMPhotography
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p.2 #12 · Sigma 135 1.8 thoughts? AF functionality


I like the Sigma look myself.


Apr 16, 2017 at 05:33 PM
Vcize
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p.2 #13 · Sigma 135 1.8 thoughts? AF functionality


Fred Miranda wrote:
Sony shooters are getting EyeAF and Image stabilization with this lens. Two features not offered to Canon or Nikon and this lens was designed for them!

Ken,
Can you post a picture showing the Sigma 135/1.8 with MC-11? Thanks for the samples!
Fred


Why wouldn't the Nikon Eye AF work with this lens?



Apr 16, 2017 at 06:49 PM
chez
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p.2 #14 · Sigma 135 1.8 thoughts? AF functionality


Vcize wrote:
Why wouldn't the Nikon Eye AF work with this lens?


Speaking from ignorance on how the Nikon eye AF works, once locked onto the eye, does the Nikon AF track that eye as it moves around the viewfinder?

Also, does the eye have to be under one of the AF points to be locked on to?



Apr 16, 2017 at 06:54 PM
Vcize
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p.2 #15 · Sigma 135 1.8 thoughts? AF functionality


chez wrote:
Speaking from ignorance on how the Nikon eye AF works, once locked onto the eye, does the Nikon AF track that eye as it moves around the viewfinder?


I believe so. I sold my D750 not long after I found out it had EyeAF (no idea why Nikon doesn't advertise the feature) so I can't test it again.

Additionally unlike Sony's system if it can't find an eye it will find the next available object in its algorithm to focus on. So you can just hold down the focus button and it will track between eye and next best object and then back to the eye as the eye moves in and out of the frame. No need to change focus modes back and forth when the eye becomes unavailable.



Apr 16, 2017 at 06:58 PM
Fred Miranda
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p.2 #16 · Sigma 135 1.8 thoughts? AF functionality


Vcize wrote:
Why wouldn't the Nikon Eye AF work with this lens?


I didn't know Nikon bodies offered EyeAF!



Apr 16, 2017 at 07:22 PM
charles.K
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p.2 #17 · Sigma 135 1.8 thoughts? AF functionality


Fred Miranda wrote:
I didn't know Nikon bodies offered EyeAF!


Yes the Nikon eye AF does work very well. It is not well documented and I recently started a thread. I have the D750 and D810 and it works extremely well in a dynamic AF situations. It is not obvious as all you have to do is change the metering (b) matrix metering to face detection on. The AF-C is set Auto and it will find the face and nearest eye. The only issue with the OVF is that the AF may track onto any part of the face but the algorithm will find the nearest eye accurately. I have used this a lot with difficult lenses like the 58/1.4G, 85/1.4G and 105/1.4G



Edited on Apr 17, 2017 at 06:02 PM · View previous versions



Apr 16, 2017 at 07:40 PM
Ken_Cravillion
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p.2 #18 · Sigma 135 1.8 thoughts? AF functionality


Couple more from this afternoon... These have my normal portrait processing so they're not straight out of the camera.

















Apr 16, 2017 at 08:00 PM
bjornthun
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p.2 #19 · Sigma 135 1.8 thoughts? AF functionality


charles.K wrote:
Yes the Nikon eye AF does work very well. It is not well documented and I recently started a thread. I have the D750 and D850 and it works extremely well in a dynamic AF situations. It is not obvious as all you have to do is change the metering (b) matrix metering to face detection on. The AF-C is set Auto and it will find the face and nearest eye. The only issue with the OVF is that the AF may track onto any part of the face but the algorithm will find the nearest eye accurately. I have
...Show more

I suppose you don't get a little green square placed on the eye that the camera is tracking, using an OVF. How do you then know which eye or what the camera is tracking before you take the picture?



Apr 16, 2017 at 08:06 PM
charles.K
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p.2 #20 · Sigma 135 1.8 thoughts? AF functionality


bjornthun wrote:
I suppose you don't get a little green square placed on the eye that the camera is tracking, using an OVF. How do you then know which eye or what the camera is tracking before you take the picture?


Yes I know, but it accurately captures the nearest eye about 95% of the time. Maybe it is not possible to change the display of AF points in the OVF with live view it is a lot more obvious.




Apr 16, 2017 at 08:40 PM
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