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Thread started 21 Sep 2010 (Tuesday) 04:37
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Sigma 120-300 f/2.8 EX OS

 
gabebalazs
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Jul 11, 2013 06:08 |  #3826

yeah, and even if let's say - hypothetically - that Sigma has improved the coating on the new model, that change should only affect contrast, and only a little bit (we're not talking about a revolutionary change that a new coating can cause). And in this case it's not a contrast issue but either decentering of the old copy or field curvature, or perhaps slight misfocus causing the difference in crops.


SONY A7RIII | SONY A7III | SONY RX10 IV | SONY RX100 | 24-70 2.8 GM | 70-200 2.8 GM | 16-35 F/4 | PZ 18-105 F/4 | FE 85 1.8 | FE 28-70 | SIGMA 35 1.4 ART | SIGMA 150-600 C | ROKINON 14 2.8
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Brummel
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Jul 11, 2013 13:33 as a reply to  @ gabebalazs's post |  #3827

Some more teleconverterstacking.

Both with Canon EOS 5D Mark III and Kenko 2.0 DGX Pro 300 + Sigma 1.4 EX DG


IMAGE: http://farm6.staticflickr.com/5511/9261809061_469424bcf2_b.jpg
IMAGE LINK: http://www.flickr.com …s/brummel2010/9​261809061/  (external link)
Bläßralle (external link) von Brummel2010 (external link) auf Flickr

Kamera-Modell: Canon EOS 5D Mark III
Objektiv: 168-420mm
Aufnahmedatum: 2013-07-11 17:10:29 +0000
Brennweite: 840mm
Blende: f/10.0
Belichtungszeit: 0.0010s (1/1000)
ISO: 2500
Belichtungsabweichung: -1.00 EV
Belichtungsmessung: Matrix
Belichtung: Blendenpriorität (halbautomatisch)
Weißabgleich: auto
Blitz ausgelöst: nein (erzwungen)

IMAGE: http://farm6.staticflickr.com/5539/9261554169_0514d408bf_b.jpg
IMAGE LINK: http://www.flickr.com …s/brummel2010/9​261554169/  (external link)
Libelle (external link) von Brummel2010 (external link) auf Flickr


Kamera-Modell: Canon EOS 5D Mark III
Objektiv: 168-420mm
Aufnahmedatum: 2013-07-11 17:57:35 +0000
Brennweite: 510mm
Blende: f/10.0
Belichtungszeit: 0.0020s (1/500)
ISO: 640
Belichtungsabweichung: -1.00 EV
Belichtungsmessung: Teilweise
Belichtung: Blendenpriorität (halbautomatisch)
Weißabgleich: auto
Blitz ausgelöst: nein (erzwungen)

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Frankfurt / Main, Germany,
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ptcanon3ti
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Jul 11, 2013 14:13 |  #3828

Brummel wrote in post #16111326 (external link)
Some more teleconverterstacking.

Both with Canon EOS 5D Mark III and Kenko 2.0 DGX Pro 300 + Sigma 1.4 EX DG

:eek: You took those shots with TWO teleconverters attached at the same time?


Paul
https://www.flickr.com​/photos/petshots/ (external link)
Body - Nikon D750
Lenses - Nikon 20 f1.8 / Nikon 16-35 f4 / Sigma 105 OS Macro / Sigma 24-105 f4 Art / Tamron 70-200 2.8 Di VC / Sigma 150-600 "S"

  
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Brummel
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Jul 11, 2013 14:17 |  #3829

ptcanon3ti wrote in post #16111452 (external link)
:eek: You took those shots with TWO teleconverters attached at the same time?

Yes ;)


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monographix
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Jul 11, 2013 14:37 |  #3830

Is the kenko TC THAT good ?? I tried the Sigma 1.4x + Sigma 2x TC to shoot the supermoon but i was discouraged. Didn't had AF and i cant trust my impaired vision for Manual Focus. I tried a few shots but they just looked like grainy soft enlargements of what i took with the 1.4x or the 2x alone.

Is it possible to see 100% size of those two pics maybe ? looking at the 1800 size ones its amazing that they look so sharp , (and probably no sharpening applied to the 1800px version?)

unbelievable


www.photographix.me (external link)

  
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Brummel
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Jul 11, 2013 14:53 |  #3831

monographix wrote in post #16111523 (external link)
Is the kenko TC THAT good ?? I tried the Sigma 1.4x + Sigma 2x TC to shoot the supermoon but i was discouraged. Didn't had AF and i cant trust my impaired vision for Manual Focus. I tried a few shots but they just looked like grainy soft enlargements of what i took with the 1.4x or the 2x alone.

Stacking both Sigma teleconverters result in very poor autofocus with the 5D³ The camera isn't able to find a focus in almost all times. With the Kenko 2.0 DGX PRO 300 AF + Sigma 1.4 attached AF is okay. Once the camera finds the focus, results are in focus. So i am using the Kenko now. Sharpness is almost equal to the Sigma. I have to stop down the exposure compensation to -1 to with the Kenko to get correct exposured pictures.

Is it possible to see 100% size of those two pics maybe ? looking at the 1800 size ones its amazing that they look so sharp , (and probably no sharpening applied to the 1800px version?)

I attach the RAW of the the 'Bläßralle' (sorry, i dont know its english name) and a 100%crop (with no sharpening) of the 'fly'. Both pictures were made handheld, so maybe there is some motionblur in it.

http://www.brummels.ne​t/exp/IMG_6594.CR2 (external link) (attention, 30 MB)
http://www.brummels.ne​t/exp/lblcrp.jpg (external link)

I hope you understand my poor english.


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flickr (external link)

  
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monographix
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Jul 11, 2013 14:58 |  #3832

forgot to mention, i am Nikon user. What is the order to piggyback TC? Body->1.4->2x->Lens ? I tried both combinations (1.4|2, 2|1,4) in both cases AF was deactivated and reporting in Viewfinder was completely off (showing f/2.8 for example)


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Brummel
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Jul 11, 2013 15:05 |  #3833

monographix wrote in post #16111583 (external link)
forgot to mention, i am Nikon user. What is the order to piggyback TC? Body->1.4->2x->Lens ? I tried both combinations (1.4|2, 2|1,4) in both cases AF was deactivated and reporting in Viewfinder was completely off (showing f/2.8 for example)

On the Canon mount, the teleconverters fit mechanically only in one way.

Camera -> Kenko 2.0 DGX -> Sigma 1.4 -> Sigma 120-300/2.8 OS.

I have to mention, that AF and two stacked tc will work only on the 5D³ and some 1D models. Canon cropkameras deactivate the AF if aperture <5.6 is reported to the camera.
The Kenko DGX does tricks and hides its presence to the camera (exif are mostly correct). Thats why the Kenko sometimes works on DX-Cameras.
But i did not test this on DX. I have only FX atm.


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tdodd
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Jul 12, 2013 12:19 |  #3834

This comparison may have been performed before, but I don't remember seeing it posted, so here is a 100% crop (no edits) comparison of :

7D + Sigma 1.4X at 420mm
vs
5D3 + Sigma 2X at 600mm.

The subject is a chewed up football, offering a good focus target (the dark blob at the bottom of the crop) confirmed using 10X Live View and plenty of texture detail for evaluation of sharpness/contrast.

Firstly I compared at equivalent exposure settings - 1/1000, f/5.6, 200 ISO - since the final magnification on screen is close and DOF and shake/blur considerations pretty much balance out, and then I opened up the 7D combo to f/4 and lowered the ISO to compensate. It looks like swapping bodies is a much better solution than using the longer TC when I run out of focal length on the 5D3, at least when shooting at low ISO values.

Here are the results....


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freddyronny
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Jul 13, 2013 12:18 |  #3835

tdodd wrote in post #16114016 (external link)
This comparison may have been performed before, but I don't remember seeing it posted, so here is a 100% crop (no edits) comparison of :

7D + Sigma 1.4X at 420mm
vs
5D3 + Sigma 2X at 600mm.

The subject is a chewed up football, offering a good focus target (the dark blob at the bottom of the crop) confirmed using 10X Live View and plenty of texture detail for evaluation of sharpness/contrast.

Firstly I compared at equivalent exposure settings - 1/1000, f/5.6, 200 ISO - since the final magnification on screen is close and DOF and shake/blur considerations pretty much balance out, and then I opened up the 7D combo to f/4 and lowered the ISO to compensate. It looks like swapping bodies is a much better solution than using the longer TC when I run out of focal length on the 5D3, at least when shooting at low ISO values.

Here are the results....

I'd prefer if you would do a comparison 420mm f/5.6 and 600mm f/8 and 420mm f/8 and 600mm f/11. That would equal out the iso advantage of fullframe and show the lens at it's sharpest. I don't really care about the performance at 600mm f/5.6 since I know that it isn't very good. Stopped down performance at 600mm is more intresting.


Canon EOS 70D / Canon Eos 450D / Sigma 10-20mm f/4-5.6 / Sigma 120-300mm f/2.8 OS / Canon 50mm f/1.8 II - Canon 18-55mm IS / Kenko Pro 300 1.4 DG / Sigma 2x APO DG / Canon 430 EX II Flickr (external link) / 500px (external link) / lsfotografie.webs.com (external link)

  
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Nmura
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Jul 14, 2013 00:09 as a reply to  @ freddyronny's post |  #3836

5d mk III, cropped.
Bodysurfing meet.

IMAGE: http://farm4.staticflickr.com/3814/9279425461_ab4025b4bf_b.jpg

IMAGE: http://farm4.staticflickr.com/3685/9279425443_f1f0015656_b.jpg

IMAGE: http://farm3.staticflickr.com/2876/9279425445_be0227f91b_b.jpg

IMAGE: http://farm8.staticflickr.com/7353/9279425543_0d435770bd_b.jpg

Gear

  
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Pax2You
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Jul 14, 2013 19:41 as a reply to  @ Nmura's post |  #3837

Looks like you had fun Nmura:)
This was a visitor to the backyard today.
538mm @ F6.3 (Exif intact)

IMAGE: http://farm3.staticflickr.com/2882/9286468209_bdd0fbf0e7_b.jpg

Panasonic G9, Panaleica 100-400, Samyang 12mm F2 NCS CS, 7Artisans 7.5mm f2.8 fisheye, Panagor 90mm f2.8 Macro (OM), Sigma APO 2x DG EX TC, Tiffen aXent ND 3.0 (ND1000) filter, Olympus OMD E-M5, Oly 14-42mm, Oly 12-50mm, ZEQ25gt Mount, plus a few other lenses, extension tubes, and general mish-mash

  
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knuckfoes
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Jul 15, 2013 04:51 |  #3838

taken with 5D III the Sports version with Sigma 2x TC. Al Servo

IMAGE: https://farm6.staticflickr.com/5456/9292499560_af7d28e4c5_b.jpg
IMAGE LINK: http://www.flickr.com/​photos/jonesboy/929249​9560/  (external link)
IMG_3925 (external link) by knuckfoes (external link), on Flickr

5D MK III with grip, Canon EF 70-200L f4 IS, Canon EF 24-105L f4 IS, Sigma 85 f1.4 EX DG HSM, Sigma 35 f1.4 HSM DG, Sigma 120-300mm f2.8 S DG OS HSM, Sigma 1.4X EX APO TC, Sigma 2X EX APO TC, Canon 600 EX-RT

  
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Pepe ­ Guitarra
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Jul 15, 2013 07:09 as a reply to  @ knuckfoes's post |  #3839

Nice photos so far, everyone. I had not played with my OS (non-S) for a while, here are some shots with the 7D + Sigma 2x TC:


IMAGE: http://farm4.staticflickr.com/3670/9288343913_a8f5514d7f_b.jpg
IMAGE LINK: http://www.flickr.com/​photos/palenquero/9288​343913/  (external link)
7D-Sigma120-300-2x-Colibri1-1 (external link) by Palenquero (external link), on Flickr

IMAGE: http://farm6.staticflickr.com/5466/9288292033_ec88e2127c_b.jpg
IMAGE LINK: http://www.flickr.com/​photos/palenquero/9288​292033/  (external link)
7D-Sigma120-300-2x-Moscardon1-1 (external link) by Palenquero (external link), on Flickr


IMAGE: http://farm6.staticflickr.com/5523/9291052518_d4945794a0_b.jpg
IMAGE LINK: http://www.flickr.com/​photos/palenquero/9291​052518/  (external link)
7D-Sigma120-300-2x-Gorion4-1 (external link) by Palenquero (external link), on Flickr

It's not a photo until you print it! :cool:
Click here (external link), this is myflickr (external link) gallery

  
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Leigh
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Jul 15, 2013 08:27 as a reply to  @ Pepe Guitarra's post |  #3840

Previous posts linked IQ tests from The Digital Image depicting that the new 120-300 2.8 appeared to have superior image quality over the former; and Bryan stated as much, as per quote below"

"I'm still trying to find out exactly what is new with this lens, but the image quality of the lens in my hands right now is impressive – noticeably better than my previous version lens (comparison)."

I checked the comparison with the Canon EF 300 2.8 IS (1), and where the Canon "beat" the former OS model "across the board" in those tests, the new one appears to compete far more favorably:

At 300mm 2.8 the IQ of the Canon looks to be superior, but moving up through 5.6 & F8 the Sigma not only equals, but very possibly exceeds that of the Canon.

http://www.the-digital-picture.com …omp=0&FLIComp=0​&APIComp=3 (external link)

When you go to 2X/600mm, however, the Canon with the 2Xii appears to trump the Sigma with the Sigma 2X.

Can't help but wonder if there is significant copy variation; as with the former model, some are achieving superlative results, & others "not so hot"???

Leigh
www.leighwax.com (external link)




  
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