Photographer Finds Massive De Oude Delft 105mm f/0.75 Lens

schnitzer79 · 10-17-2014, 12:34 AM

dont know if this has already been posted but found it interesting

Photographer Finds Massive De Oude Delft 105mm f/0.75 Lens, Manages to Use it with His D610

**mwilky55** · 10-17-2014, 05:11 AM

Originally posted by schnitzer79

dont know if this has already been posted but found it interesting

Photographer Finds Massive De Oude Delft 105mm f/0.75 Lens, Manages to Use it with His D610

Hi Schnitzer,
Unrelated to the lens....really like your Life is Like a Camera quote....

schnitzer79 · 10-17-2014, 05:51 AM

Originally posted by dcshooter

I'm surprised that the guy in the article was not able to figure out what kind of lens it was. It literally took me 5 seconds of googling to determine that Delft Rayxar lenses were indeed used for X ray applications. Heck, I even found a pic of a 50mm f/.75 mounted on a Pentax!

hes even got a phd in optics, or at least not yet

apparently very few of those were made, so he could have a fake in his hands....

Originally posted by mwilky55

Hi Schnitzer,
Unrelated to the lens....really like your Life is Like a Camera quote....

thanks man.its getting a bit old now though

owl · 10-17-2014, 12:11 PM

X ray? I've packaged x-ray detectors and they don't use glass, too dense. Usually the lenses are basically bundles of wave guides and the windows are made of low density metal (some obvious choices, but you figure it out). Sometimes the lenses are made of metals, but I have never seen glass used.

owl · 10-18-2014, 02:22 PM

Originally posted by dcshooter

Certainly glass has been used, but because the diffraction characteristics of X rays are quite different form visible light, they tend to perform quite poorly when attached to DSLRs and the like.

We must be talking about two different spectrums, like how infrared photography has nothing to do with thermal imaging.

10-17-2014, 12:34 AM	#1
schnitzer79 Pentaxian Join Date: Jul 2013 Photos: Albums Posts: 1,248	Photographer Finds Massive De Oude Delft 105mm f/0.75 Lens dont know if this has already been posted but found it interesting Photographer Finds Massive De Oude Delft 105mm f/0.75 Lens, Manages to Use it with His D610

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10-17-2014, 05:11 AM	#2
mwilky55 Site Supporter Join Date: Feb 2012 Location: Southeastern Connecticut Photos: Albums Posts: 816	Originally posted by schnitzer79 dont know if this has already been posted but found it interesting Photographer Finds Massive De Oude Delft 105mm f/0.75 Lens, Manages to Use it with His D610 Hi Schnitzer, Unrelated to the lens....really like your Life is Like a Camera quote....

10-17-2014, 05:51 AM	#3
schnitzer79 Pentaxian Join Date: Jul 2013 Photos: Albums Posts: 1,248 Original Poster	Originally posted by dcshooter I'm surprised that the guy in the article was not able to figure out what kind of lens it was. It literally took me 5 seconds of googling to determine that Delft Rayxar lenses were indeed used for X ray applications. Heck, I even found a pic of a 50mm f/.75 mounted on a Pentax! hes even got a phd in optics, or at least not yet apparently very few of those were made, so he could have a fake in his hands.... Originally posted by mwilky55 Hi Schnitzer, Unrelated to the lens....really like your Life is Like a Camera quote.... thanks man.its getting a bit old now though

10-17-2014, 12:11 PM	#4
owl Forum Member Join Date: Jun 2008 Location: Upstate New York, USA Posts: 92	X ray? I've packaged x-ray detectors and they don't use glass, too dense. Usually the lenses are basically bundles of wave guides and the windows are made of low density metal (some obvious choices, but you figure it out). Sometimes the lenses are made of metals, but I have never seen glass used.

10-18-2014, 02:22 PM	#5
owl Forum Member Join Date: Jun 2008 Location: Upstate New York, USA Posts: 92	Originally posted by dcshooter Certainly glass has been used, but because the diffraction characteristics of X rays are quite different form visible light, they tend to perform quite poorly when attached to DSLRs and the like. We must be talking about two different spectrums, like how infrared photography has nothing to do with thermal imaging.