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FORUMS Sony Cameras, Lenses & Accessories Sony Cameras 
Thread started 24 Feb 2014 (Monday) 08:30
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Sony A7 models with non-Sony lenses

 
StudioAbe
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Aug 23, 2014 15:35 |  #2431

Charlie wrote in post #17113432 (external link)
another possibility of the blur, maybe the docks were causing vibrations? wind?

either way, I havent experienced the issue of shutter shake yet, but have only taken the camera out for two dedicated landscape sessions. 100% in focus, shake free so far. Even while shooting on the pier, since you can kinda feel the wave vibrations.

There is movement of the docks affecting the images for sure. However, the rusted pole in the sample crop is driven solidly into the riverbed and they should not move under given shooting condition. As for me, I was on solid ground - on a huge concrete box encasing drainage outlet. There was hardly any wind - in fact, I wish there were some more so that the cloud would move faster. The Gitzo setup has endured much windier conditions and I can attest it's not a factor this time around.

This is only my third day of A7R ownership so there is still a lot of getting to know the camera to do. Stay tuned. ;)



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Aug 23, 2014 16:12 as a reply to  @ StudioAbe's post |  #2432

A7 + Sigma 500mm

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Aug 23, 2014 19:10 |  #2433

Charlie wrote in post #17113472 (external link)
I did my moon shots with the 600mm, ISO 200, 1/200, F8. Didnt have issues with it. It could be that I was pointing straight up, hence not having the seesaw effect.

i think we're lucky enough not to have the shutter vibrations others are experiencing.


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David ­ Arbogast
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Aug 23, 2014 19:14 |  #2434

For all the shutter-shock alarmism, I don't think I've ever seen it - not even when I mounted the 500mm f/4L IS USM + 2x extender on my a7R.

What annoys me is that I was initially hesitant to buy an a7R because of the alarmists and started out with the a7 (which supposedly doesn't have the shutter-shock concerns because of the first curtain electronic shutter).


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Aug 23, 2014 19:22 |  #2435

i was also hesitant to buy the FE70-200 because of it. I'm glad i did.


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Aug 23, 2014 19:44 |  #2436

i made a comparison on the bokeh of two different lenses.

Which one in your opinion is better in bokeh considering the difference in aperture and focal length.

shot in different days and time.

there's a slight difference in framing though. looks like i still have more room for the 70-200. if i move a little closer, maybe the bokeh will be cremier...

or the f2.8 really make a huge difference even if it's a little bit shorter lens.

Sigma 150mm F2.8 Macro OS
@ F2.8

IMAGE: https://farm6.staticflickr.com/5562/14661077998_414a2facf0_b.jpg
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Sony FE70-200/F4
@ 200mm F4
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this third one is Sigma 150mm at F4.
IMAGE: https://farm6.staticflickr.com/5561/14661067369_33ae9c3158_b.jpg
IMAGE LINK: https://flic.kr/p/okxN​xB  (external link) myModel-2 (external link) by vinzmunoz (external link), on Flickr

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Aug 23, 2014 20:02 as a reply to  @ vinmunoz's post |  #2437

My Sony RM-VPR1 shutter release quit working, I have to wiggle the cable to the controller and it might work. What are you guys using for a tethered shutter release.


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David ­ Arbogast
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Aug 23, 2014 20:10 |  #2438

Sigma bokeh looks smoother, but it's hard to say since the FE 70-200mm they are captured in different lighting conditions. The bokeh balls on the Sony appear to be cat's eyes around the frame while the Sigma's bokeh balls appear consistently rounder except at the edges. Even behind the neck, the Sony's bokeh balls are elliptical, while the Sigma balls are round.

Considering that you're comparing a prime to a zoom, the zoom looks very impressive. Looks amazingly sharp. I would love to have the Sony 70-200mm for my a7R! :)


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Aug 23, 2014 20:14 |  #2439

yah the difference in light condition may made the difference. i shoot the sigma late in the afternoon while today i shoot with sony around 3:30

it's really sharp especially that i compare it against a macro lens which should be a lot sharper than a non macro lens and zooms.

here's a close up shot from the sony at 200mm F4

IMAGE: https://farm4.staticflickr.com/3848/15011116821_73b3dfdd45_b.jpg
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Aug 23, 2014 20:32 as a reply to  @ vinmunoz's post |  #2440

Nice one man!

xpfloyd wrote in post #17113030 (external link)
Nice 35 ART shots Omar. Nice shots Vinz

Thanks! :)

In terms of shutter shock vibration everything i read points to it happening in a very specific range of shutter speed. Cant remember if its around 1/100.

In terms of sharpness you really need to be a bit more careful when shooting such a high MP camera. It is less forgiving than low MP cameras when it comes to slower SS and sharper images.


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Tareq
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Aug 23, 2014 20:56 |  #2441

Did you do that comparison with camera handholding?

I don't have Sigma 150mm nor FE 70-200, so what is the point of that comparison? I may try to use my Canon 70-200 mkII which has f2.8, and it is a sharp lens, so if i stopped down to F4 it will get sharper then, and honestly speaking, i don't have any plan or desire to buy that FE 70-200 even if i have plenty of budget, i feel i will not use 70-200 much as long i don't shoot portraits much, and mostly i use 70-200 for sports and action so that is my 1DX/1D3 for.


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Aug 23, 2014 21:07 |  #2442

Tareq wrote in post #17113939 (external link)
Did you do that comparison with camera handholding?

I don't have Sigma 150mm nor FE 70-200, so what is the point of that comparison? I may try to use my Canon 70-200 mkII which has f2.8, and it is a sharp lens, so if i stopped down to F4 it will get sharper then, and honestly speaking, i don't have any plan or desire to buy that FE 70-200 even if i have plenty of budget, i feel i will not use 70-200 much as long i don't shoot portraits much, and mostly i use 70-200 for sports and action so that is my 1DX/1D3 for.

Everyone has different needs and goals; they don't have to make sense to you. ;)


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Aug 23, 2014 21:22 |  #2443

David Arbogast wrote in post #17113816 (external link)
For all the shutter-shock alarmism, I don't think I've ever seen it - not even when I mounted the 500mm f/4L IS USM + 2x extender on my a7R.

What annoys me is that I was initially hesitant to buy an a7R because of the alarmists and started out with the a7 (which supposedly doesn't have the shutter-shock concerns because of the first curtain electronic shutter).

I think when the attached lens has sufficient weight, it will begin to act as a mass damper. Therefore, it is not exactly a focal length issue but may have more to do with lenses that fall in certain weight threshold that cause the shutter vibration to amplify. In reality, it's probably more complicated than that as it is also affected by weight distribution, center of gravity, and harmonic resonance, to name a few possible factors. Let's just say that I managed to nail it only on the third day of ownership. Checking other photos I took so far at about 1/100 sec, I haven't seen anything like it yet either.



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Aug 23, 2014 21:30 |  #2444

Tareq wrote in post #17113939 (external link)
Did you do that comparison with camera handholding?

I don't have Sigma 150mm nor FE 70-200, so what is the point of that comparison? I may try to use my Canon 70-200 mkII which has f2.8, and it is a sharp lens, so if i stopped down to F4 it will get sharper then, and honestly speaking, i don't have any plan or desire to buy that FE 70-200 even if i have plenty of budget, i feel i will not use 70-200 much as long i don't shoot portraits much, and mostly i use 70-200 for sports and action so that is my 1DX/1D3 for.

I'm in the same boat. I don't see a reason to get a FE 70-200mm, when I have a big Canon lens that I need for my 5D3. The Canon 70-200mm II 2.8 also out performs the FE 70-200mm and I can easily adapt it to the a7R.
Though the question now is, how well does Canon's IS handle the shutter vibration?


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vinmunoz
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Aug 23, 2014 21:30 |  #2445

Tareq wrote in post #17113939 (external link)
Did you do that comparison with camera handholding?

I don't have Sigma 150mm nor FE 70-200, so what is the point of that comparison? I may try to use my Canon 70-200 mkII which has f2.8, and it is a sharp lens, so if i stopped down to F4 it will get sharper then, and honestly speaking, i don't have any plan or desire to buy that FE 70-200 even if i have plenty of budget, i feel i will not use 70-200 much as long i don't shoot portraits much, and mostly i use 70-200 for sports and action so that is my 1DX/1D3 for.

handholding.... i'm comparing to know if i don't regret switching. while i still have time to return the sony. but considering i have flexibility in FL and the ability to AF, i think the sony wins.

f2.8 against and f4 + 50mm more FL bokeh comparison. i'm not looking at sharpness as both lenses may excel the same. the Sigma is a macro lens too which is supposed to be sharper. ang also a prime.


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Sony A7 models with non-Sony lenses
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