ND Filter for Fisheye

I like the Pentax 10-17 Fisheye lens, but wish i could fit a ND or Grad Filter. Saw this video below for DIY filter for M4/3 cameras. A lot of the posts below say not to do it on DSLR as it would break the mirror. My thought is there is a bit of gap between the mirror and the back of the lens so it might be ok. Has anybody any experience or thoughts with this before i trash my camera.

link

Have you thought about using gelatin filters? You can cut them to size and so long as you handle them with great care and don't get them wet. They will do the job without causing any harm. Many lenses, including some Pentax ones, incorporate a clip or slot behind the rear element, it's a shame there isn't one on the DA fisheye

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Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -

Gel filters was what is was thinking, I will give it a go and see what happens.

I agree its a shame there is not a slot behind the lens.

I gave it a try the other day and it seems to work, fixed the gels to the back of the lens using dot stickers as it made it quick to do when out and about.




I tried stacking a number of 3 gels, this photo also had a half gel for the top half of the photo (its worth remembering that the image comes out of the lend upside down) As you can see there is a strong color cast. I could not retrieve the greens.




here is a black and white conversion.

well done for trying but are these genuine gelatin filters or bits of plastic that are used in front of lamps? In the photograph of the lens that doesnt look like a real gel to me.

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Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -

What i used was this Rosco Strobist. It is a bit of plastic that you put in front of flash, but often referred to as gels.

Do you have something that would be more suitable in mind that you could point towards.

I thought it was something like that. Proper gels are actually made from gelatin, hence my earlier remark about not getting them wet - they will dissolve. Many camera filters are actually a sheet of gelatin sandwiched between two pieces of glass. This is what you are looking for link

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Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -

Thanks for that, will give them a try

Did you ever find any? I have come across one in a box and it's yours if you want it.

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Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -

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