The Letus35 Redesigned :)

Andy Gordon · January 21st, 2006, 02:21 AM

Yes it was around 3x4 inches, I just measured it, 75mm x 100mm roughly, it's big! For medium format. Which is why I sanded it down to a 50mm diameter circle to fit my 56mm pipe.

The bokeh on these plastic bags looks freaky to me, kind of like a plastic bag. :)

Michael Maier · January 21st, 2006, 02:54 AM

I also don't like the plastic bag images at all.

Ben Winter · January 21st, 2006, 09:18 AM

Oh, blast!

I forgot to mention that my GL2's sharpness setting was turned all the way down--I did that to try out Frank's image sharpening technique, because that's what he recommended doing, and I forgot to turn it back up.

Dangnabbit! I'm going to throw this out there and say that might be why the images are a little soft :)

Ben Winter · January 21st, 2006, 05:30 PM

Installed the Beattie that came today, image looks amazing. Nuff said, I'm not even going to bother to post screengrabs or footage, it looks that good. I'm stickin with it.

Oscar Spierenburg · January 21st, 2006, 05:35 PM

Surely you don't think you'd get away with that? <<<I'm not even going to bother to post screengrabs or footage, it looks that good>>>
Got rid of the vignetting too?

Alain Bellon · January 21st, 2006, 05:49 PM

Quote:

Originally Posted by Ben Winter

Installed the Beattie that came today, image looks amazing. Nuff said, I'm not even going to bother to post screengrabs or footage, it looks that good. I'm stickin with it.

Ben, don't tease us like that. Please post some images with the Beattie, preferably some similar shots as the ones you posted earlier on this thread so we can compare.

I want to buy a Beattie too, but I would like to see how good it really is first :)

Ben Winter · January 21st, 2006, 06:05 PM

Haha...ok fine, I was joking. It's dark out now so I'll post some screengrabs and test footage tomorrow.

Leo Mandy · January 21st, 2006, 06:17 PM

Just to update about what I have been doing. I tried the bag from Home Depot as a spinning CD, and believe me it was fun. The images are great, very little light loss, but the same thing as Ben - problem with the out-of-focus background (the bohek). It doesn't look that great. Too bad.
Using 1.4 lens.

Craig Bellaire · January 21st, 2006, 06:24 PM

Did you take out the glass that comes with the Letus and replace it with the Beattie?
Also did you have to cut the Beattie?

thanks

Ben Winter · January 21st, 2006, 06:32 PM

To Craig: yes and no, respectively. In fact the small tab kept the glass from falling through the hole as I was gluing it.

Francois Poitras · January 21st, 2006, 07:28 PM

Great Ben, can’t wait to see the footage. It would be great too if you could post a pic of the Beattie on the mounting plate...

Leo Mandy · January 21st, 2006, 07:29 PM

Ben be careful with that thing!
Is the Beattie smaller than the letus35A mount?

Craig Bellaire · January 21st, 2006, 07:29 PM

My Thoughts to, I love the letus but have thought the image could be slightly sharper.. Pictures and item number/type for the Beattie would be great...

Francois Poitras · January 21st, 2006, 07:37 PM

If Ben is using the Intenscreen 82430 (for the Contax RTS II), which I think he is, it is 1.466" x 1.016" (37.2mm X 25.8mm). I already inquired about this. I think there is only another plain Beattie Intenscreen for the 35mm format (according to their site), and it is slightly smaller. It’s the one for the Nikon F100.

All the others have grid lines or circles.

Dennis Wood · January 21st, 2006, 07:50 PM

Ben, if possible, post some high and low light footage, full frame, low (or no) compression. Also, some with higher shutter speeds if you can. A comparison of eia1956 with and without would be icing on the cake. I'm interested in how quick the pager motor will rotate the screen. I actually have all the parts to execute this (using bushings) so like a lot of folks, am very curious to see if the motion can be limited appropriately, and with minimal z axis motion.

Chromatic issues are also worth checking out carefully if the motion cannot be tightly controlled.

I've been doing some experiments with my cam (a GS400 like yours) and would also be curious if you can get the GG within 1.6 inches without vignetting...therefore getting rid of the achromat.

January 21st, 2006, 09:18 AM	#33
Ben Winter Trustee Join Date: Jun 2005 Location: Hollywood, CA Posts: 1,675 Images: 1	Oh, blast! I forgot to mention that my GL2's sharpness setting was turned all the way down--I did that to try out Frank's image sharpening technique, because that's what he recommended doing, and I forgot to turn it back up. Dangnabbit! I'm going to throw this out there and say that might be why the images are a little soft :) __________________ BenWinter.com

January 21st, 2006, 05:30 PM	#34
Ben Winter Trustee Join Date: Jun 2005 Location: Hollywood, CA Posts: 1,675 Images: 1	Installed the Beattie that came today, image looks amazing. Nuff said, I'm not even going to bother to post screengrabs or footage, it looks that good. I'm stickin with it. __________________ BenWinter.com

January 21st, 2006, 06:05 PM	#37
Ben Winter Trustee Join Date: Jun 2005 Location: Hollywood, CA Posts: 1,675 Images: 1	Haha...ok fine, I was joking. It's dark out now so I'll post some screengrabs and test footage tomorrow. __________________ BenWinter.com

January 21st, 2006, 06:24 PM	#39
Craig Bellaire Major Player Join Date: Aug 2004 Location: Rochester, NY Posts: 422	Ben Did you take out the glass that comes with the Letus and replace it with the Beattie? Also did you have to cut the Beattie? thanks __________________ Craig Bellaire www.VerticalVideoSolutions.com

January 21st, 2006, 06:32 PM	#40
Ben Winter Trustee Join Date: Jun 2005 Location: Hollywood, CA Posts: 1,675 Images: 1	To Craig: yes and no, respectively. In fact the small tab kept the glass from falling through the hole as I was gluing it. __________________ BenWinter.com

January 21st, 2006, 02:21 AM	#31
Andy Gordon Regular Crew Join Date: Mar 2005 Location: Perth WA Posts: 103	Yes it was around 3x4 inches, I just measured it, 75mm x 100mm roughly, it's big! For medium format. Which is why I sanded it down to a 50mm diameter circle to fit my 56mm pipe. The bokeh on these plastic bags looks freaky to me, kind of like a plastic bag. :)

January 21st, 2006, 02:54 AM	#32
Michael Maier Trustee Join Date: Apr 2005 Posts: 1,269	I also don't like the plastic bag images at all.

January 21st, 2006, 05:35 PM	#35
Oscar Spierenburg Major Player Join Date: Jan 2005 Location: (The Netherlands - Belgium) Posts: 735	Surely you don't think you'd get away with that? <<<I'm not even going to bother to post screengrabs or footage, it looks that good>>> Got rid of the vignetting too?

January 21st, 2006, 06:17 PM	#38
Leo Mandy Major Player Join Date: Dec 2004 Posts: 749	Just to update about what I have been doing. I tried the bag from Home Depot as a spinning CD, and believe me it was fun. The images are great, very little light loss, but the same thing as Ben - problem with the out-of-focus background (the bohek). It doesn't look that great. Too bad. Using 1.4 lens.

January 21st, 2006, 07:28 PM	#41
Francois Poitras Regular Crew Join Date: Nov 2004 Location: Québec (Canada) Posts: 133	Great Ben, can’t wait to see the footage. It would be great too if you could post a pic of the Beattie on the mounting plate... __________________ François

January 21st, 2006, 07:29 PM	#42
Leo Mandy Major Player Join Date: Dec 2004 Posts: 749	Ben be careful with that thing! Is the Beattie smaller than the letus35A mount?

January 21st, 2006, 07:29 PM	#43
Craig Bellaire Major Player Join Date: Aug 2004 Location: Rochester, NY Posts: 422	My Thoughts to My Thoughts to, I love the letus but have thought the image could be slightly sharper.. Pictures and item number/type for the Beattie would be great... __________________ Craig Bellaire www.VerticalVideoSolutions.com

January 21st, 2006, 07:37 PM	#44
Francois Poitras Regular Crew Join Date: Nov 2004 Location: Québec (Canada) Posts: 133	If Ben is using the Intenscreen 82430 (for the Contax RTS II), which I think he is, it is 1.466" x 1.016" (37.2mm X 25.8mm). I already inquired about this. I think there is only another plain Beattie Intenscreen for the 35mm format (according to their site), and it is slightly smaller. It’s the one for the Nikon F100. All the others have grid lines or circles. __________________ François

January 21st, 2006, 07:50 PM	#45
Dennis Wood Major Player Join Date: Mar 2005 Location: Ontario, Canada Posts: 916	Ben, if possible, post some high and low light footage, full frame, low (or no) compression. Also, some with higher shutter speeds if you can. A comparison of eia1956 with and without would be icing on the cake. I'm interested in how quick the pager motor will rotate the screen. I actually have all the parts to execute this (using bushings) so like a lot of folks, am very curious to see if the motion can be limited appropriately, and with minimal z axis motion. Chromatic issues are also worth checking out carefully if the motion cannot be tightly controlled. I've been doing some experiments with my cam (a GS400 like yours) and would also be curious if you can get the GG within 1.6 inches without vignetting...therefore getting rid of the achromat.