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Author Topic: Hitech Firecrest vignetting 17-40?  (Read 756 times)

iczek

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Hitech Firecrest vignetting 17-40?
« on: March 17, 2017, 01:27:41 PM »

Hi.
Does anyone have experience with Format Hitech Firecrest Holder with canon 17-40 or 16-35/4 lens?
I purchased this kit and with my 17-40 there is a juge vignetting at 17mm. Till 20mm I can see some cignetting too.
They inform that this holder works with no vignetting with lenses up to 16mm.



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BartvanderWolf

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Re: Hitech Firecrest vignetting 17-40?
« Reply #1 on: March 17, 2017, 01:42:02 PM »

Hi.
Does anyone have experience with Format Hitech Firecrest Holder with canon 17-40 or 16-35/4 lens?
I purchased this kit and with my 17-40 there is a juge vignetting at 17mm. Till 20mm I can see some cignetting too.
They inform that this holder works with no vignetting with lenses up to 16mm.

Hi,

There are two types of vignetting. One is mechanical vignetting, which should not be what you are experiencing. Another is potentially caused by a thick filter, where more oblique rays (towards the corners) travel a longer distance through the filter medium. You didn't mention which filter you used, but it's something that's common with dense ND filters.

Cheers,
Bart
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iczek

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Re: Hitech Firecrest vignetting 17-40?
« Reply #2 on: March 17, 2017, 03:20:25 PM »

Hi,
I'm talking about mechanic vignette with this particular holder Firecrest from Hitech. I use 100mm system and looking for someone who use this holder with canon 16-35/4.


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Dahlmann

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Re: Hitech Firecrest vignetting 17-40?
« Reply #3 on: March 17, 2017, 08:47:28 PM »

Do you use the circular polarizer as well? If i use that with say 10 stop filter i get a horrible vinjetting. So bad that i can't remove it without cropping the image in post. I use 16-35 nikon lens.

I like the 10 stop filter but I am not a fan of the rest of the system.  Hard to attach to the ring wich is attached to the lens. Nearly dropped the hole ting on the ground when i tried to  use it. I also get light leeks when i use it during daytime long exposure..

The circular polarizer creates a horrible uneven strange effect in the sky when you use it.

Sorry for of topic.  I hade to get it oit of my chest.

I wold recommend buying lee filter holder to use with the 10 stops firecrest filter. No color cast att all..

Cheers

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iczek

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Hitech Firecrest vignetting 17-40?
« Reply #4 on: March 18, 2017, 06:48:28 PM »

Agree. The firecrest is not a best solution. I used old  version which is much much better.
Firecrest has some issues that strictly comes from not-photography thinking.
Seems to be the product of lab not user friendly photo tool.


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« Last Edit: March 19, 2017, 07:02:51 PM by iczek »
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Dahlmann

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Re: Hitech Firecrest vignetting 17-40?
« Reply #5 on: March 19, 2017, 12:59:56 AM »

Yeah agree!!

I regret the buy.

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