Ah, finally
Exactly what I thought, some sort of perfectly round masking in the lens
Denice Barsness, CRA, COMT, CDOS, FOPS
CPMC Dept of Ophthalmology/ The Eye Institute
Ophthalmic Diagnostic Services
711 Van Ness Avenue Suite 250
San Francisco CA 94109
415-600-5781
FAX 415-558-7011
From: Barsness, Denice
Sent: Tuesday, January 28, 2020 4:40 PM
To: CPMC Ophthalmic Diagnostic Center <cpmceyelab@xxxxxxxxxxxxxxxx>
Subject: FW: [optimal] Re: [**External**] Re: Iris photography
________________________________
From: optimal-bounce@freelists.orgOn<mailto:optimal-bounce@freelists.orgOn>
Behalf OfPaul Paquette
Sent: Tuesday, January 28, 2020 4:38:59 PM (UTC-08:00) Pacific Time (US &
Canada)
To: optimal@xxxxxxxxxxxxx<mailto:optimal@xxxxxxxxxxxxx>
Subject: [optimal] Re: [**External**] Re: Iris photography
WARNING: This email originated outside of the Sutter Health email system!
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Just some quick thoughts...
If it's not a masked placed in post production then my guess is they have a
blackout filter with a hole in the center screwed on to the end of the lens &
when they get close enough to fill the hole with iris then they focus & shoot.
The other option might be a tin masking plate glued on the camera back just in
front of chip like the fundus camera masks with the different notches to ID
which manufacturer's camera it came from... or it's simply the round shape the
lens attachment leaves on the chip.... after all, we are still getting round
fundus images that are taken on a square digital chip!!
Paul
-----Original Message-----
From: CPMC Ophthalmic Diagnostic Center
<dmarc-noreply@xxxxxxxxxxxxx<mailto:dmarc-noreply@xxxxxxxxxxxxx>>
To: optimal@xxxxxxxxxxxxx<mailto:optimal@xxxxxxxxxxxxx>
<optimal@xxxxxxxxxxxxx<mailto:optimal@xxxxxxxxxxxxx>>
Sent: Tue, Jan 28, 2020 10:21 am
Subject: [optimal] Re: [**External**] Re: Iris photography
All this talk about corneal reflex
I haven't heard comment about the masking? Any thoughts on how they are doing
that INSIDE the camera? Not Photoshop or other editing tricks
Denice Barsness, CRA, COMT, CDOS, FOPS
CPMC Dept of Ophthalmology/ The Eye Institute
Ophthalmic Diagnostic Services
711 Van Ness Avenue Suite 250
San Francisco CA 94109
415-600-5781
FAX 415-558-7011
From: Barsness, Denice
Sent: Monday, January 27, 2020 5:38 PM
To: CPMC Ophthalmic Diagnostic Center
<cpmceyelab@xxxxxxxxxxxxxxxx<mailto:cpmceyelab@xxxxxxxxxxxxxxxx>>
Subject: FW: [**External**] [optimal] Re: Iris photography
________________________________
From: optimal-bounce@freelists.orgOn<mailto:optimal-bounce@freelists.orgOn>
Behalf Oft.egnatz@xxxxxxxxxxx<mailto:Oft.egnatz@xxxxxxxxxxx>
Sent: Monday, January 27, 2020 5:37:15 PM (UTC-08:00) Pacific Time (US & Canada)
To: Optimal Freelist; optimal@xxxxxxxxxxxxx<mailto:optimal@xxxxxxxxxxxxx>
Subject: [**External**] [optimal] Re: Iris photography
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Hasan,
Have you checked out Lester Dine Co? They used to make a small flash that just
gave a small corneal reflex. Look them up on the Interwebz.
On Jan 26, 2020, 3:35 PM -0500, Hasan Omairah
<shagroon@xxxxxxxxxxx<mailto:shagroon@xxxxxxxxxxx>>, wrote:
I have been looking for a technique to capture iris images without any
artifacts for some time, experimented with ring flash, different light sources
all failed to give me such a perfect iris illumination, and saturation.
I stumbled across this video and couldn't make what is the light source used!
clearly they are not using a flash, but a continuous light source instead
https://youtu.be/nP1LfV2WcQs
[https://i.ytimg.com/vi/nP1LfV2WcQs/maxresdefault.jpg]
Eye Art - Eye Photography | Promo
Turn your guests' eyes into stunning abstract art. If you look closely, every
iris contains an incredible galaxy of colours and patterns, each more
individua...
youtu.be
Anyone might help what is the light source used here? or a different approach
to achieve the same result
thank you
[http://arabeyes.net/imgs/Hasan_sig.png]
,-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-,
, Hasan Omairah AAS COT OCT-C CRA
, Senior Ophthalmic photographer
, Department of Ophthalmology MBC (97)
, King Faisal Specialist Hospital & Research Center
, PO Box 3354
, Riyadh, 11211
, Saudi Arabia
,--------------
, Mobile-Pager within KFSH 44345
, +966 11-557-6131(work)
, +966 11 442-4975 (fax)
, -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-,
"Be not overcome of evil, but overcome evil with good"
