Yes I'm afraid I have another adaptor.

ive probably spent more than 150 on both of my d focus screens (one skratched.. one was a weired one with a wacky hot spot) and also on a bunch of random stuff..just trying to experiment.. i got a wax solution working pretty good.. except a few air bubbles.. (wax is a very difficult thing to deal with). it wasnt until i went to throw away some failed wax solutions when in the trash i saw something that looked almost exactly like something i could use.. i pulled it out and it was a little (TO GO) container.. one which would hold salsa.. salad dressing.. ect.) i cut it to size.. and tried it out.. PERFECT!!!! no weird lines.. no bumps.. no dots.. its perfect.. the depth of field im getting with it is much better than the focus screen i had on there.. its crazy i know... but it seriously works. ill post some footage as soon as i shoot some tomorrow..
this brings me to my next point.. anyone know a free hosting site where i could post video? should i just set up a phoney .mac account?
 
I'm telling ya, the beercup35!!
C0014.jpg

Good lord I hope it doesn't work, people are out there paying close to $100 for these damn D screens, and if someone puts a piece from a beer cup into an adapter....I....I just dont know what the hell I'm gonna do... :crybaby:

jk Zakaree, good luck and we look forward to your results!
 
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Ed, just for the sake of clarification, and YES I did do a search first, but have you received the Linhof screen that you ordered yet? I'm interested to see the results from that as I think it may be a viable option to any of the existing screens.

On a sidenote, I have most of the parts for my adapter (minus the lens mount and focusing screen) but I put together a small test adapter using a bag similar to the kind you get in the grocery store for vegetables. The grain was evident and light loss was apparent, but the concept worked. Even though I've seen this work on a ton of other people's adapters I couldn't believe that I had made this work. Amazing. I can't wait for my other parts to get here, especially the Nikon B III screen.
 
Havent got the linhof screen yet, BH told me about 4 days before it was in stock, that was a week ago. Still waiting.
 
yah i did the party cup idea along time ago.. i posted those pictures:) but there was still some weird lines in the beer cup.. the to go salad dressing cup doesnt have those weird lines.. im stoked.. ill post it tomorrow..
ps... anyone have a good solution to cleaning the damn uv filters??? theres always something on it.. and it bugs me
 
Hey Ed. Look what you made me do! :)

Footage from my first day out with my Ed35.
http://snodart.com/snodpublic/35mm_FIRST_TEST.mov (4.6MB)

It is just a quick test, but looks pretty good to me. I didn't set up any lights and probably didn't have the f-stop and shutter set on the money. I finished the adapter the day before UPS dropped off my DVX, so I still need to get used to both items. Looks like a few specs of dust found there way in after I cleaned everything too.

The adapter was built exactly as Ed has described in this thread. I took pics along the way and will be posting the basic steps and stages on my website later (probably a month or so). Ed let me know if you do not wish for me to do this. The adapter has the Nikon D screen (red dot). I see some grain, but this could be in part due to the poor lighting I used. I will have to fool around with it some more.

I think the rod support system (don't have yet... backorder at EVS) is a must. Since the cam is zoomed into the D screen, any slight movement in the cam or the adapter is picked up in the footage. I hope the rod support will solve this because I will be using a dolly, jib, steadicam, etc.

Thanks for all the info Ed. You the man.
 
Hey.......very nice!! You did a really great job! Yep......need the support system, I'm just about finished building mine (why don't I just buy the rods?).

Since finishing my first adapter using the Nikon D screen, I've been working on making a wax screen. I now have what I think is a good one. I ran a preliminary test today to check it out before sealing it into the system and I was very happy.

As soon as I get it all finished (including the support) I'll post some footage.

But......snodart........looks like you have a really nice adapter there.......congrats!!!

Marlene
 
Nice work snodart. I like the footage (for the most part). The first inside shot is showing some chromatic aberration, but that can be fixed.

Ed, speaking of this you mentioned that your footage got much sharper when you turned one of your macros in reverse. I think I now understand the reason for this. An achromat (or achromatic lens) consists of two different types of glass (usually crown and flint glass). The reversal of magnification in one of the lenses changes the focal length of certain wavelengths of light. This decreases chromatic aberration significantly. Reducing chromatic aberration will make your picture look sharper as there is not any color fringing in your image. This is all based on my limited knowledge of optics that I have gathered in my quest for a great 35mm adapter. I'm just passing this along in the hope that it will help others.

So, with all of this information, how the heck do we find a useful achromat? I need to get all of my materials together first (still waiting on that Nikon screen) but once I do I believe I have an easily obtainable (read: cheap) solution to the achromat problem. :D Don't hold me to that, but I wanted to throw that out there for consideration.
 
Thanks marlenedegrood.

ovjamaica, I noticed this as well, but didn't know what it was called or how it got there.. now I know: chromatic aberration. Thanks for the info!

ovjamaica said:
I need to get all of my materials together first (still waiting on that Nikon screen) but once I do I believe I have an easily obtainable (read: cheap) solution to the achromat problem.
Click to expand...

Can you give us a hint as to your idea?

And I though I was done. :)
 
You know what? Screw it. I'm not going to play these little cat-and-mouse games. The idea I have (and that I am developing with someone who is very well versed in cameras and optics) is to use the enlarging lenses from binoculars. The very front lens in most binoculars is an achromat. I'm going to try it as soon as I have all of my parts. If zakaree comes through with these D screens that may be sooner than I thought as the B III is still on backorder. :( If anyone wants to try this method before I do please let us know how it works. I recommend mounting it between your regular macro and the groundglass. Depending on the power of the binocular lens you may not need your regular macro. I'm not promising any spectacular results, but the tests my associate has done seem promising.
 
Thanks for posting your idea ovjamaica. Nice choice. I would like to try this out. If I do I will let you know how it comes out.

I have a quick question. I feel silly asking, but I couldn't find it by searching the thread. I have the nikon D screen. Does the GG part face toward the 50mm lense and the plano side face the camera? I realized while pondering the chromatic aberration issue that in my test shots I had it turned the other way (GG toward the cam).

I would think that the plano goes toward the cam. If so, it looks like I will be cutting a new PVC cap for the mount as turning the D screen sandwich changes the distance from the lense.
 
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SNODART YOU ROCK!!!! :) :Drogar-BigGrin(DBG) Your footage looks awesome! I had a crappy day at work but this totally made my night. Bright colors (the red dot) and a sharp focus, I am impressed :2vrolijk_08:

Re: the abberation: yes there is a teeny bit but mine also does that in certain situations, its the nature of the macro. Certainly much less than I have seen in other DIY projects. Didnt really notice until ovjamaica pointed it out and watched it on the third viewing. Whites seem to push the macro....

You are correct, the matte/GG side faces the DVX, the condenser side faces the 35mm lens. Are you using a macro+4 on the DVX?? Is your 58mm macro+10 turned backwards (round part facing the DVX)? I have also thought about ditching the Asian macro and upgrading to the B+W 58mm macro +10 (its Shneider after all- its gota be better)

Good job! You and Marlene definitely stuck with it and did well. Now tell us about your experience, what did you have trouble with, any mistakes, what was easy what was hard. How much did you spend....dish honey dish!

Oh, and BTW- your Cavision support piece will ship tomorrow, thanks!
 
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well done snodart...

Well, now it's my turn. the ED 35 UK version

You will notice that I'm selling it as it is(should be easy enough to replace the mount to for other lenses), it's just because I want to buid a new one with more functionality and dedicated to my HD project so I need to reduce the grain a bit, probably with vibrating plates, and also I want to rotate the image with a prism. so if anyone is interested in my current ED35 please do let me know.

on the footage you will notice on the first part that there is a little vignetting, just because I didn't zoom enough, my mistake, but don't have time to take more footage, on the second part of it you will see that there is no vignetting.

So here is the site for stills and footage

http://www.calypsopictures.com

Anthony
 
your adapter looks nice and clean, but I'm not sure how big the footage is... clicked on it and my browser sits there thinking/downloading for a very long time. Had to give up and get back to work...will try again later...

Good looking unit though, seems shorter too :)
 
Does anyone have any suggestions as to how I can coat a piece of glass before taking it to the frame shop to be cut? Thought about masking tape as it peels off clean...
 
moochy's vid file is 34.7 MB. I'm on a fast connection here (extremely so, as I work for Overstock.com) and it's estimated at about 40 minutes for the download. I'm about 60% done now. Moochy, if you want I can throw this up on my server and act as a mirror so others can see this if you want. The adapter looks rather clean though. Good form on it.
 
ovjamaica said:
moochy's vid file is 34.7 MB. I'm on a fast connection here (extremely so, as I work for Overstock.com) and it's estimated at about 40 minutes for the download. I'm about 60% done now. Moochy, if you want I can throw this up on my server and act as a mirror so others can see this if you want. The adapter looks rather clean though. Good form on it.
Click to expand...

yes that would be good, much appriciated, maybe someone could tell me how to compress my short, I used quicktime mpeg4, so I don't if there is any better without pixelating the short.

Suggestion anyone?
 
Sorry, I tried to upload it to my server but my firewall here at work doesn't like to play nice with my FTP server. As an option, here is another link you can use to view moochy's footage.

I REALLY liked your footage moochy. Grain was minimal and I did not notice any chroma aberration. You already identified the vignetting that occurred in the first part of the clip. The inside shots were great. Looked really even across the entire screen. Nice work. Did you do anything to modify Ed's design? Excellent work.

One more note. Why does everyone shoot sample footage from 35mm adapters in their kitchens? :D
 
ovjamaica said:
Sorry, I tried to upload it to my server but my firewall here at work doesn't like to play nice with my FTP server. As an option, here is another link you can use to view moochy's footage.

I REALLY liked your footage moochy. Grain was minimal and I did not notice any chroma aberration. You already identified the vignetting that occurred in the first part of the clip. The inside shots were great. Looked really even across the entire screen. Nice work. Did you do anything to modify Ed's design? Excellent work.

One more note. Why does everyone shoot sample footage from 35mm adapters in their kitchens? :D
Click to expand...

thanks for the link, and yes that's right, kitchen seems to the favorite filming place :). I dind't change a lot of thing, the concept is basically the same but because pvc pipes in UK are different I had to sort few problems out that resulted in an adapter with no fixed part, which I'm proud of. this adapter can take anytype of ground glass(have to fit in a 2" tube though), the gg can be replaced in seconds, you can open the adapter in second and spray some air to remove the dust, so I think, that's a success. and it is also very practical. I didn't use the 72 mm ring holder, my x10 screwws directly at the back in an aluminium ring and then onto a stepdown ring 72 to 55-58

and here you go the ed35....
 
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