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caspert79
Joined: 31 Oct 2010 Posts: 2926 Location: The Netherlands
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Posted: Sat Feb 16, 2019 3:06 pm Post subject: Tokina AT-X 90mm f/2.5 vs SMC Pentax 85mm f/1.8 |
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caspert79 wrote:
How does the SMC Pentax 'K' 85mm f/1.8 hold up against the Tokina AT-X 90mm f/2.5, which is generally regarded as one of the best manual focus lenses one can get? I decided to do a quick test on my Sony A7.
I equally like both lenses, but I'm planning to buy a Sony 85mm f/1.8 (I take a lot of pictures of my son, but because he moves so much I find 75% of the pictures to be out of focus with a manual lens). So I was going to sell one of the two lenses, and did a quick test to make sure I would not regret my decision.
First impression: hard to draw any conclusions. Bokeh is nice from both lenses.
Let's have a look at the 100% crops:
Sharpness and contrast of the Pentax are remarkably good @ F/1.8 I think. Results get better once stopped down a little. Both lenses are plenty sharp and contrasty; it seems they both outperform my sensor. Most remarkable difference is the DOF: at similar aperture settings the Pentax shows higher DOF. If this is due to the difference in focal length? My guess is that there is an actual difference in aperture.
For whoever is interested: I decided to sell the Pentax (see sales section). I still like both lenses, but the Tokina (being a macro lens) offers me a bit more flexibility.
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sat Feb 16, 2019 4:25 pm Post subject: |
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calvin83 wrote:
Good choice for keeping the Tokina. The Sony is a very good lenses and focus very fast. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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kiddo
Joined: 29 Jun 2018 Posts: 1121
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Posted: Sat Feb 16, 2019 5:03 pm Post subject: |
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kiddo wrote:
Very nice samples, tokina is a better keeper for macro, the 1.8 better for portraits in low light. As i don't have any 85-90 yet, probably my best/practical lens would be the sony 85 , everyone is speaking nice things about it.....even though i hate plastics,sometimes the AF is needed . |
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caspert79
Joined: 31 Oct 2010 Posts: 2926 Location: The Netherlands
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Posted: Sat Feb 16, 2019 5:14 pm Post subject: |
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caspert79 wrote:
kiddo wrote: |
Very nice samples, tokina is a better keeper for macro, the 1.8 better for portraits in low light. As i don't have any 85-90 yet, probably my best/practical lens would be the sony 85 , everyone is speaking nice things about it.....even though i hate plastics,sometimes the AF is needed . |
Yeah, my choice for the Sony is purely practical: make nice and sharp portraits that are always in focus. It will be my only AF lens, because I like MF lenses much more. And the good ones last for generations, not being dependent of electronics and plastics. |
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Antoine
Joined: 08 Jan 2016 Posts: 298 Location: London
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Posted: Sat Feb 16, 2019 7:47 pm Post subject: |
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Antoine wrote:
Surely, if you need AF, you can buy a techart and save money...?... _________________ Antoine
Sony A6000 APS-C and Sony A7 Rii
Minolta Fisheye MD Rokkor 7.5 mm f4, Fisheye MD 16 f2.8 MD R 17mm f4, MD R 20mm f2.8, MC VFC & MDIII 24mm f2.8, MD 28mm f2.0 &3.5, MD II 35mm 1.8, MD 45mm f2.0, MD 50mm f 1.2 & MD I f1.4, MC PG 58mm 1.2, MD 85mm f2.0, MD R 85mm f2.8 Varisoft, MC 85mm f1.7 MD R 100mm f2.5, MD R 100mm f4.0 macro, MD III 135mm f2.8, MD R 200mm f2.8 & 4.0, RF 250mm f5.6, MD 300mm f4.5, MD APO 400 mm f5.6, RF 500mm f8.0, RF 800mm f8.0 *2 300-s and 300-l
100 mm f4 macro bellows (5/4)
Vivitar 17mm f3.5, Elicar 300mm mirror f5.6, Zhongi turbo ii
Sigma 16mm f 2.8 fish eye
Zooms:24-50 mm f4, 35-70 mm f3.5 macro, 28-85mm f3.5-4.5, 50-135 f 3.5, 70-210 f4 and MD APO 100-500 mm f8 |
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caspert79
Joined: 31 Oct 2010 Posts: 2926 Location: The Netherlands
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Posted: Sat Feb 16, 2019 8:11 pm Post subject: |
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caspert79 wrote:
I will certainly look into that option. Do you have experience with it? |
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kiddo
Joined: 29 Jun 2018 Posts: 1121
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Posted: Sat Feb 16, 2019 8:21 pm Post subject: |
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kiddo wrote:
Antoine wrote: |
Surely, if you need AF, you can buy a techart and save money...?... |
I haven't found enough information to convince me that's the right way,in fact there's to little info about it, I'm using A7II |
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caspert79
Joined: 31 Oct 2010 Posts: 2926 Location: The Netherlands
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Posted: Sat Feb 16, 2019 8:26 pm Post subject: |
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caspert79 wrote:
It appears the Techart is not compatible with the A7, but only from A7ii on. |
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blotafton
Joined: 08 Aug 2013 Posts: 1554 Location: Sweden
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Posted: Sat Feb 16, 2019 8:41 pm Post subject: |
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blotafton wrote:
Thanks for posting, I've been interested in both for a while. Actually the Vivitar version for some reason. |
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caspert79
Joined: 31 Oct 2010 Posts: 2926 Location: The Netherlands
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Posted: Sat Feb 16, 2019 8:51 pm Post subject: |
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caspert79 wrote:
blotafton wrote: |
Thanks for posting, I've been interested in both for a while. Actually the Vivitar version for some reason. |
Would be interesting to see a comparison between the Tokina and the Vivitar version. Under most light circumstances no difference I guess. |
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Lightshow
Joined: 04 Nov 2011 Posts: 3669 Location: Calgary
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Posted: Sun Feb 17, 2019 12:02 am Post subject: |
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Lightshow wrote:
I'd love to have your 28/3.5 and 85.1.8, but you are asking for more than I'm willing to part with.
Good luck with the sale. _________________ A Manual Focus Junky...
One photographers junk lens is an artists favorite tool.
My lens list
http://www.flickr.com/photos/lightshow-photography/ |
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kiddo
Joined: 29 Jun 2018 Posts: 1121
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Posted: Sun Feb 17, 2019 6:59 am Post subject: |
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kiddo wrote:
At the same aperture, Pentax seems a little bit sharper,in fact they seem igual in sharpening when pentax is one stop faster,which is very good for details in portraits. But the bokeh, the way that tokina is dealing highlights and shadows,is better,to my eyes. Now ,the weight ,if taken into account, it's not the same neither,and probably Pentax would be faster to focus portraits. Regarding the vivitar versus tokina, are there any differences ? |
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caspert79
Joined: 31 Oct 2010 Posts: 2926 Location: The Netherlands
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Posted: Sun Feb 17, 2019 7:42 am Post subject: |
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caspert79 wrote:
kiddo wrote: |
At the same aperture, Pentax seems a little bit sharper,in fact they seem igual in sharpening when pentax is one stop faster,which is very good for details in portraits. But the bokeh, the way that tokina is dealing highlights and shadows,is better,to my eyes. Now ,the weight ,if taken into account, it's not the same neither,and probably Pentax would be faster to focus portraits. Regarding the vivitar versus tokina, are there any differences ? |
I agree, the Pentax's performance is beyond my expectations. Only optical difference between the Tokina and the Vivitar should be the coating. |
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caspert79
Joined: 31 Oct 2010 Posts: 2926 Location: The Netherlands
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Posted: Sun Feb 17, 2019 7:48 am Post subject: |
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caspert79 wrote:
Lightshow wrote: |
I'd love to have your 28/3.5 and 85.1.8, but you are asking for more than I'm willing to part with.
Good luck with the sale. |
I've send you a PM. |
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