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EwanD
Joined: 28 Dec 2016
Posts: 10
Location: Sydney, Australia
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 Posted: Thu Jan 26, 2017 7:08 am Post subject: Weird flare from Tair-11A 135mm?? |
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EwanD wrote:
Hi guys,
I've got a Tair-11A 135mm f/2.8, which has some beautiful characteristics; however when shooting recently I've been getting really frustrated by this strange, small, circular centre flare it seems to produce.
It's not even or pretty, and actually really distracting.
I saw it whilst filming some clips at my friend's Wedding, then did a flare test at home, and the results are posted here (frame grabs) -
Has anyone else experienced a similar effect? Is it inherent with that lens? Or do I just own a lemon copy? haha
Thanks,
Ewan
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marcusBMG
Joined: 07 Dec 2012
Posts: 1318
Location: Conwy N Wales
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| Posted: Thu Jan 26, 2017 2:32 pm Post subject: |
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marcusBMG wrote:
I would say pretty definitely that looks like a reflection off the sensor, due to the bright point light source in the image.
Polarising filter might help? but certainly adjust your position if you can so that bright point is out of image or at least isn't pretty much head on.
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Pentax K3-ii; pentax K-S2; Samsung NX 20; Lumix G1 + adapters;
Adaptall collection (proliferating!) inc 200-500mm 31A, 300mm f2.8, 400mm f4.
Primes: takumar 55mm; smc 28mm, 50mm; kino/komine 28mm f2's, helios 58mm, Tamron Nestar 400mm, novoflex 400mm, Vivitar 135mm close focus, 105mm macro; Jupiter 11A; CZJ 135mm.
A classic zoom or two: VS1 (komine), Kiron Zoomlock... |
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Lloydy
Joined: 02 Sep 2009
Posts: 7795
Location: Ironbridge. UK.
Expire: 2022-01-01
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| Posted: Thu Jan 26, 2017 10:29 pm Post subject: |
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Lloydy wrote:
Flat rear element?
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EwanD
Joined: 28 Dec 2016
Posts: 10
Location: Sydney, Australia
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| Posted: Fri Jan 27, 2017 6:14 am Post subject: |
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EwanD wrote:
| marcusBMG wrote: |
I would say pretty definitely that looks like a reflection off the sensor, due to the bright point light source in the image.
Polarising filter might help? but certainly adjust your position if you can so that bright point is out of image or at least isn't pretty much head on. |
Thanks mate.
The point light was just to do a test and check what was going on.
But in the first 2 grabs, the same effect is present just from background lights that arent even that strong.
I shoot backlit lots for video, so this circle flare will be problematic.
I haven't seen it before though, so wondering if it's a lens make/model thing, or a lens copy thing?... |
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EwanD
Joined: 28 Dec 2016
Posts: 10
Location: Sydney, Australia
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| Posted: Fri Jan 27, 2017 6:16 am Post subject: |
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EwanD wrote:
| Lloydy wrote: |
| Flat rear element? |
Could that be what's causing it?
Cheers |
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TAo2
Joined: 09 Mar 2012
Posts: 319
Location: Scotland
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| Posted: Fri Jan 27, 2017 9:56 am Post subject: Re: Weird flare from Tair-11A 135mm?? |
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TAo2 wrote:
| EwanD wrote: |
Hi guys,
I've got a Tair-11A 135mm f/2.8, which has some beautiful characteristics; however when shooting recently I've been getting really frustrated by this strange, small, circular centre flare it seems to produce.
It's not even or pretty, and actually really distracting.
I saw it whilst filming some clips at my friend's Wedding, then did a flare test at home, and the results are posted here (frame grabs) -
Has anyone else experienced a similar effect? Is it inherent with that lens? Or do I just own a lemon copy? haha
Thanks,
Ewan
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Hi Ewan,
It's single coated, thus prone tae lens flare...and if ye point it straight at light sources (as yer 3 photos show)... then that's exactly what ye'll get...  |
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lucca1x
Joined: 09 Feb 2014
Posts: 93
Location: Romania
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| Posted: Fri Jan 27, 2017 5:04 pm Post subject: |
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lucca1x wrote:
To answer your initial question : I don't think you have a bad copy. I've tried to reproduce your test with my almost new tair 11a and got similar result:
This is a great lens but it has it's flaws. In bright sunlight it is also prone to flare (badly) and loses contrast, but I still like it |
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BurstMox
Joined: 04 Dec 2011
Posts: 2018
Location: France
Expire: 2016-08-02
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| Posted: Fri Jan 27, 2017 11:11 pm Post subject: |
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BurstMox wrote:
| Lloydy wrote: |
| Flat rear element? |
Not flat
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EwanD
Joined: 28 Dec 2016
Posts: 10
Location: Sydney, Australia
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| Posted: Sat Jan 28, 2017 12:59 am Post subject: Re: Weird flare from Tair-11A 135mm?? |
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EwanD wrote:
[quote="TAo2"]
| EwanD wrote: |
Hi Ewan,
It's single coated, thus prone tae lens flare...and if ye point it straight at light sources (as yer 3 photos show)... then that's exactly what ye'll get... |
Hi mate,
Yeh I understand that, but there's pretty flare and pleasant flare - this is just a dirty orange dot in the centre of frame.
Doesn't introduce any character or style - just looks like something went wrong. |
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EwanD
Joined: 28 Dec 2016
Posts: 10
Location: Sydney, Australia
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| Posted: Sat Jan 28, 2017 1:07 am Post subject: |
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EwanD wrote:
| lucca1x wrote: |
To answer your initial question : I don't think you have a bad copy. I've tried to reproduce your test with my almost new tair 11a and got similar result:
This is a great lens but it has it's flaws. In bright sunlight it is also prone to flare (badly) and loses contrast, but I still like it |
Hi Lucca,
Thanks so much for the feedback - yes it looks like maybe this is just how that lens renders flare.
Good to know - I hate wondering if you've just been unlucky and picked up a rubbish copy haha.
Cheers |
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Lloydy
Joined: 02 Sep 2009
Posts: 7795
Location: Ironbridge. UK.
Expire: 2022-01-01
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| Posted: Sat Jan 28, 2017 1:15 am Post subject: |
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Lloydy wrote:
| BurstMox wrote: |
| Lloydy wrote: |
| Flat rear element? |
Not flat
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It's a lens I haven't got, but a few flat rear element lenses that I've got do make similar flare spots by reflecting on the sensor.
_________________
LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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