Condensors & Achromats?

Ben Winter · November 5th, 2005, 10:54 AM

Shot with static Optosigma adapter. My Nikon D screen broke, and my Letus wasn't working (not Quyen's fault, it was mine, I didn't test my modifications enough).

http://www.frozenphoenixproductions.com/misc/still1.bmp
http://www.frozenphoenixproductions.com/misc/still2.bmp
http://www.frozenphoenixproductions.com/misc/still3.bmp
http://www.frozenphoenixproductions.com/misc/still4.bmp
http://www.frozenphoenixproductions.com/misc/still5.bmp

All I can say is that I love the sun. I was able to shoot at 1.8, 1/8000 shutter even with this baby on. That much light = zero grain.

Leo Mandy · November 5th, 2005, 11:11 AM

Ben,

The images look good, but I think your focal length is off - the focused images are a bit soft
BTW, what is the Optosigma adpater you speak of?

Ben Winter · November 5th, 2005, 12:58 PM

The focal length is indeed off, I changed it mid-shoot since it had been too close and I didn't have enough time to fine-tune it. The adapter I speak of is one suggested very early on by Richard Mellor, found here:

http://www.dvinfo.net/conf/showthrea...threadid=37296

I had originally intended to build only this adapter but my Nikon D Screen arrived first in the mail, and, impatient as I am, I found ways to use that instead of the Optosigma glass and liked the results too much to try other options. Of course, once my Nikon D got scratches...

Jimmy Herdberg · November 5th, 2005, 06:56 PM

My adapter is built on the optisgma-glass and it works really good! I have some sample pictures at www.kokokaka.com/35mm. The adapter costs me about $250. It was not that hard to build it!

Bill Porter · November 5th, 2005, 11:39 PM

Quote:

Originally Posted by Jimmy Herdberg

My adapter is built on the optisgma-glass and it works really good! I have some sample pictures at www.kokokaka.com/35mm. The adapter costs me about $250. It was not that hard to build it!

I get this: "You need Flash 8 to visit this site, download it for free. Best regards Kokokaka.com "

Yet I have Flash 8.

Also your giant and lengthy Flash intro is cute but my GAWD please put a "Skip" on there.

You may want to put a list or back/forward arrows on your list of More News. I had to scroll through the whole collection to get back to the 35mm link!

Leo Mandy · November 6th, 2005, 09:07 AM

Wow, I found that too. I couldn't get to the link!

Bill Porter · November 7th, 2005, 01:53 AM

It's fixed now. Very nicely designed page, Jimmy!

Jimmy Herdberg · November 7th, 2005, 02:37 PM

Ok, fixed the flashcheck now I think. No one likes my my site, I know. But you can skip the intro if you click on "read the koko kaka news" in the footer.

I use Flash 8 becasue it's really good on videocompression and you don't need any codecs, only flash 8.

People asks me if I will sell the adapter but I don't have the time to build it and sell it. It costs about $200 to build so if I want to sell it it would be quite expensive. When I have some time I will create a "build your own adapter tutorial" with links where to buy all stuff and more but first I have to build my next version of the adapter, I'm going to use two condensorlenses, +10 diopter, a better nikon f-mount and a lens holder.

Leo Mandy · November 7th, 2005, 04:45 PM

I still can't get the link to work. It is just a blank black page with the koko type on the bottom. Nothing happens.

Bill Porter · November 7th, 2005, 05:45 PM

Jimmy I like your site! It's just that the intro is so long and you can't interrupt it once it starts, hehe

Ben Winter · November 21st, 2005, 04:46 PM

Just want to mention that ebay is a great place to get achromats.

Don't murder me, but I picked up the $200 Century Optics 7+ achromat on ebay yesterday for 73 bucks. Doesn't get much better than that, does it?

Manu Pinto · November 24th, 2005, 08:46 AM

someone can post some photos of the condenser lens and of the proper GG.

in some threads I have read that someone use Aspheric Lens.
which is the difference?

I have chosen to use a GG of the Mamyia RZ.
what do you think of it?

thanks Manu

Manu Pinto · November 24th, 2005, 09:15 AM

an other small question.

and....
...the lenses of Fresnel?

who has as condenser used it?

__________________________
thanks Manu

Frank Vrionis · November 24th, 2005, 06:27 PM

i vote for a sticky. the knowledge in these forums will really drive the development better and better 35 adapters.

...and for newbies that are DIYers or cannot afford them

November 5th, 2005, 10:54 AM	#16
Ben Winter Trustee Join Date: Jun 2005 Location: Hollywood, CA Posts: 1,675 Images: 1	Shot with static Optosigma adapter. My Nikon D screen broke, and my Letus wasn't working (not Quyen's fault, it was mine, I didn't test my modifications enough). http://www.frozenphoenixproductions.com/misc/still1.bmp http://www.frozenphoenixproductions.com/misc/still2.bmp http://www.frozenphoenixproductions.com/misc/still3.bmp http://www.frozenphoenixproductions.com/misc/still4.bmp http://www.frozenphoenixproductions.com/misc/still5.bmp All I can say is that I love the sun. I was able to shoot at 1.8, 1/8000 shutter even with this baby on. That much light = zero grain. __________________ BenWinter.com

November 5th, 2005, 12:58 PM	#18
Ben Winter Trustee Join Date: Jun 2005 Location: Hollywood, CA Posts: 1,675 Images: 1	The focal length is indeed off, I changed it mid-shoot since it had been too close and I didn't have enough time to fine-tune it. The adapter I speak of is one suggested very early on by Richard Mellor, found here: http://www.dvinfo.net/conf/showthrea...threadid=37296 I had originally intended to build only this adapter but my Nikon D Screen arrived first in the mail, and, impatient as I am, I found ways to use that instead of the Optosigma glass and liked the results too much to try other options. Of course, once my Nikon D got scratches... __________________ BenWinter.com Last edited by Ben Winter; November 5th, 2005 at 02:09 PM.

November 21st, 2005, 04:46 PM	#26
Ben Winter Trustee Join Date: Jun 2005 Location: Hollywood, CA Posts: 1,675 Images: 1	Just want to mention that ebay is a great place to get achromats. Don't murder me, but I picked up the $200 Century Optics 7+ achromat on ebay yesterday for 73 bucks. Doesn't get much better than that, does it? __________________ BenWinter.com

November 5th, 2005, 11:11 AM	#17
Leo Mandy Major Player Join Date: Dec 2004 Posts: 749	Ben, The images look good, but I think your focal length is off - the focused images are a bit soft BTW, what is the Optosigma adpater you speak of?

November 5th, 2005, 06:56 PM	#19
Jimmy Herdberg New Boot Join Date: Oct 2005 Posts: 22	My adapter is built on the optisgma-glass and it works really good! I have some sample pictures at www.kokokaka.com/35mm. The adapter costs me about $250. It was not that hard to build it!

November 6th, 2005, 09:07 AM	#21
Leo Mandy Major Player Join Date: Dec 2004 Posts: 749	Wow, I found that too. I couldn't get to the link!

November 7th, 2005, 01:53 AM	#22
Bill Porter Major Player Join Date: Mar 2005 Location: Ventura, California, USA Posts: 751	It's fixed now. Very nicely designed page, Jimmy!

November 7th, 2005, 02:37 PM	#23
Jimmy Herdberg New Boot Join Date: Oct 2005 Posts: 22	Ok, fixed the flashcheck now I think. No one likes my my site, I know. But you can skip the intro if you click on "read the koko kaka news" in the footer. I use Flash 8 becasue it's really good on videocompression and you don't need any codecs, only flash 8. People asks me if I will sell the adapter but I don't have the time to build it and sell it. It costs about $200 to build so if I want to sell it it would be quite expensive. When I have some time I will create a "build your own adapter tutorial" with links where to buy all stuff and more but first I have to build my next version of the adapter, I'm going to use two condensorlenses, +10 diopter, a better nikon f-mount and a lens holder.

November 7th, 2005, 04:45 PM	#24
Leo Mandy Major Player Join Date: Dec 2004 Posts: 749	I still can't get the link to work. It is just a blank black page with the koko type on the bottom. Nothing happens.

November 7th, 2005, 05:45 PM	#25
Bill Porter Major Player Join Date: Mar 2005 Location: Ventura, California, USA Posts: 751	Jimmy I like your site! It's just that the intro is so long and you can't interrupt it once it starts, hehe

November 24th, 2005, 08:46 AM	#27
Manu Pinto New Boot Join Date: Oct 2005 Posts: 14	someone can post some photos of the condenser lens and of the proper GG. in some threads I have read that someone use Aspheric Lens. which is the difference? I have chosen to use a GG of the Mamyia RZ. what do you think of it? thanks Manu

November 24th, 2005, 09:15 AM	#28
Manu Pinto New Boot Join Date: Oct 2005 Posts: 14	an other small question. and.... ...the lenses of Fresnel? who has as condenser used it? __________________________ thanks Manu

November 24th, 2005, 06:27 PM	#29
Frank Vrionis Regular Crew Join Date: Feb 2005 Posts: 93	i vote for a sticky. the knowledge in these forums will really drive the development better and better 35 adapters. ...and for newbies that are DIYers or cannot afford them