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Kuribayashi K.C. Petri Orikkor 1:3.5 f=35mm
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PostPosted: Wed Aug 18, 2021 9:03 pm    Post subject: Kuribayashi K.C. Petri Orikkor 1:3.5 f=35mm Reply with quote

Kuribayashi K.C. Petri Orikkor 1:3.5 f=35mm (Kuri Coat/Klear Coat?)

With IR pass filter and LED lamp.

#1


With IR pass filter and 365 UV torch.

#2


With UV Pass filter and 2 strobes

#3


Crop

#4


PostPosted: Wed Aug 18, 2021 10:37 pm    Post subject: Reply with quote

Wow.
That's sharp.
Amazing really
Tom


PostPosted: Wed Aug 18, 2021 11:06 pm    Post subject: Reply with quote

Oldhand wrote:
Wow.
That's sharp.
Amazing really
Tom


That photo and crop were taken at f11, and I did add a little sharpening to make it pop.


PostPosted: Thu Aug 19, 2021 12:00 am    Post subject: Reply with quote

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PostPosted: Thu Aug 19, 2021 12:15 am    Post subject: Reply with quote

Knudsen wrote:
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Here...

https://photographyoftheinvisibleworld.blogspot.com/search?q=kuribayashi+35mm+f3.5

More...

https://pakira3.sakura.ne.jp/wp/?p=19296#


PostPosted: Fri Aug 20, 2021 12:41 am    Post subject: Reply with quote

That is I believe one of the Kyoei Acall rebranded series that Petri sold with its early SLR's. I had several, but I never tried them with IR or UV.

Excellent work!


PostPosted: Fri Aug 20, 2021 4:45 am    Post subject: Reply with quote

luisalegria wrote:
That is I believe one of the Kyoei Acall rebranded series that Petri sold with its early SLR's. I had several, but I never tried them with IR or UV.

Excellent work!


The only reason I got this lens was for UV. The performance has already been documented and compared. It does look slightly different than the other Kuribayashi Petri lenses of the time. Maybe the initials are short for Kyoei Coat.


PostPosted: Fri Aug 20, 2021 7:57 am    Post subject: Reply with quote

Great result using a great for UV lens! There are several copies of this lens, but nothing beats the original version!

As someone has already posted the link to my site, I don't have to do that again Wink

You might want to consider doing UV white balancing using matted (sanded down) white Teflon (alcohol rinsed and untouched)


PostPosted: Fri Aug 20, 2021 3:12 pm    Post subject: Reply with quote

kds315* wrote:
Great result using a great for UV lens! There are several copies of this lens, but nothing beats the original version!

As someone has already posted the link to my site, I don't have to do that again Wink

You might want to consider doing UV white balancing using matted (sanded down) white Teflon (alcohol rinsed and untouched)


Thanks for the tip! I will look into that.


PostPosted: Fri Aug 20, 2021 5:58 pm    Post subject: Reply with quote

Lens with attached filter and macro focus helical.

Filters used for sample photos.

#1


#2


PostPosted: Sat Aug 21, 2021 5:00 am    Post subject: Reply with quote

I was getting a white balance error in the Sony a6000, so I would not proceed to validate the accuracy in camera. Turns out the message was just a warning and not really an error. I would just fine tune the WB in post. Based on the link below I should be able to run WB as many times until I like the results in camera. (Eg. DuPont Teflon etc)

https://www.lifepixel.com/shop/converted-cameras/sony-converted-cameras/sony-a6000-camera-lens-and-conversion#tab-white-balance-tips


White balance re-adjusted in post.

#1


PostPosted: Sat Aug 21, 2021 8:33 am    Post subject: Reply with quote

That warning is caused by that odd (for the camera) color distribution, nothing to worry about!

Looks better - I do lift the shadows a bit at times to not lose structures in the dark center.

The Baader-U is my "work horse" since about 10 years now, hard to find a better one...


PostPosted: Thu Oct 21, 2021 8:40 am    Post subject: Reply with quote

Photo stack taken with the Kuribayashi Petri 35mm f3.5. Twenty three frames using Heliconfocus and focus stacking method. Might be reflected UV. Truth be told I don't recall which filter I used.


#1


#2 Crop


PostPosted: Thu Oct 21, 2021 9:30 am    Post subject: Reply with quote

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