XL-H1 with a straight PL mount adapter for Cinema Lenses.... at DVinfo.net

Shannon Rawls · January 23rd, 2006, 01:30 PM

This question is for everybody, but can probably be answered by Chris in 2 seconds....

I came across this website: http://xl1solutions.com/ADAPTERS.htm and they advertise if I use this adapter then it will multiply the focus length by only 2x. Other straight adapters (like these: http://www.letus35.com/XL.html) say the focus length is multiplied by 7x or more.

So what's up? 2x is not bad at all. I heard the custom-made adapters used on the XL1's from "28 Days Later" were only 2x as well. This seems very doable?

But is it true?

I'm just trying to get that narrow DOF we all strive for, and weighing my options, that's all.

- ShannonRawls.com

Steve Roark · January 23rd, 2006, 02:18 PM

Hi Shannon. I'm no expert, but it looks like they're talking about the 16mm lenses when they say 2x. Haven't done the math yet, but I'd guess that the frame of 16mm film is roughly twice the size of the 1/3" ccd, so only half of the lens' image is thrown away. I don't see how a 35mm lens could be also be 2x since they were designed for a much larger image plane. I think that's a convenient omission on the website.

I wonder how well older 16mm lenses would hold up against modern video lenses. Time to check out ebay...

EDIT: I just did the math:0.3333 inch = 8.46582 millimeter

EDIT II: found this on eBay:Zeiss ARRIFLEX Arri 16mm 9.5mm PL mount 1.3 mint lens

That should be 19mm on the Canon, would love to see someone try this baby on and post the results...

Chris Hurd · January 26th, 2006, 08:56 PM

This topic has been heavily discussed in our XL1 / XL1S Optics & Lens Options forum. Try searching there.

January 23rd, 2006, 01:30 PM	#1
Shannon Rawls Major Player Join Date: Nov 2003 Location: Los Angeles, California Posts: 853	XL-H1 with a straight PL mount adapter for Cinema Lenses.... This question is for everybody, but can probably be answered by Chris in 2 seconds.... I came across this website: http://xl1solutions.com/ADAPTERS.htm and they advertise if I use this adapter then it will multiply the focus length by only 2x. Other straight adapters (like these: http://www.letus35.com/XL.html) say the focus length is multiplied by 7x or more. So what's up? 2x is not bad at all. I heard the custom-made adapters used on the XL1's from "28 Days Later" were only 2x as well. This seems very doable? But is it true? I'm just trying to get that narrow DOF we all strive for, and weighing my options, that's all. - ShannonRawls.com __________________ Shannon W. Rawls ~ Motion Picture Producer & huge advocate of Digital Acquisition.

January 26th, 2006, 08:56 PM	#3
Chris Hurd Obstreperous Rex Join Date: Jan 2001 Location: San Marcos, TX Posts: 27,368 Images: 513	This topic has been heavily discussed in our XL1 / XL1S Optics & Lens Options forum. Try searching there. __________________ CH Search DV Info Net \| 20 years of DVi \| ...Tuesday is Soylent Green Day!

January 23rd, 2006, 02:18 PM	#2
Steve Roark Regular Crew Join Date: Apr 2005 Location: Vilseck, Germany Posts: 89	Hi Shannon. I'm no expert, but it looks like they're talking about the 16mm lenses when they say 2x. Haven't done the math yet, but I'd guess that the frame of 16mm film is roughly twice the size of the 1/3" ccd, so only half of the lens' image is thrown away. I don't see how a 35mm lens could be also be 2x since they were designed for a much larger image plane. I think that's a convenient omission on the website. I wonder how well older 16mm lenses would hold up against modern video lenses. Time to check out ebay... EDIT: I just did the math:0.3333 inch = 8.46582 millimeter EDIT II: found this on eBay:Zeiss ARRIFLEX Arri 16mm 9.5mm PL mount 1.3 mint lens That should be 19mm on the Canon, would love to see someone try this baby on and post the results...