My latest (and best) telecine

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paulcotto
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Post by paulcotto »

I received the BonsaiDrive in the mail today and I also built the custom RGB to BNC plug needed to hook it up to the Sony XC-003 camera. After a few minutes of reading the manuals I was able it to record the RGB signal from the camera. Since it has SDI output I will be able to transfer the uncompressed video to my PC. I don’t own the Blackmagic Decklink yet but I will probably order one tomorrow. I was able to monitor the Bonsai output on an old Amiga monitor with Y/C input (svideo) and it look great! I now believe I have built the ultimate home telecine :D It's always been a dream of mine to be able to transfer my films at the highest quality. The ultimate goal is to be able to shoot, process, transfer and master a DVD all in house without compromising quality at any stage. I built this system over the course of about 6 years so the pieces finally fell into place.

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Paul Cotto
Don't worry about equipment so much and make your movie!
pbrstreetgang
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Post by pbrstreetgang »

I got it, it's on its way. Now all I need is a 3chip cam and my w/printer xp setup is almost ready to go. Anyone know where I can get hold of a reasonably priced 3chip industrial camera??

Andy...
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Post by paulcotto »

Here is a 10 Bit transfer from the BonsaiDrive to the BlackMagic Decklink over SDI and converted to MPEG2 using TMPGenc. I will post a very short uncompressed .mov and . avi shortly.


http://smallgagefilms.com/video/SDI_10B ... kMagic.mpg

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Paul Cotto
Don't worry about equipment so much and make your movie!
paulcotto
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Post by paulcotto »

Here is an 80 meg short uncompressed AVI for compairison>>

http://smallgagefilms.com/video/SDI_10B ... cShort.avi

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Paul Cotto
Don't worry about equipment so much and make your movie!
christoph
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Post by christoph »

paulcotto wrote:Here is an 80 meg short uncompressed AVI for compairison>>
looks quite nice, glad to hear the bonsai works well...
unfortunately the highlights still blow out quite badly, which is one of the hardest things to correct (basically only a better camera or multi capture can work against that).

++ christoph ++
Mitch Perkins
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Post by Mitch Perkins »

christoph wrote:
paulcotto wrote:Here is an 80 meg short uncompressed AVI for compairison>>
looks quite nice, glad to hear the bonsai works well...
unfortunately the highlights still blow out quite badly, which is one of the hardest things to correct (basically only a better camera or multi capture can work against that).

++ christoph ++
Negs and/or 16mm and/or more even illumination helps, too. ~:?)

Paul, what stock/guage is the footage? Looks like small guage reversal.

You'll notice that high-end filmed TV shows often blow out highlights, but since it's 35mm colour neg, it just looks better - inherently more area/information.

Mitch
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Post by christoph »

Mitch Perkins wrote:
christoph wrote:unfortunately the highlights still blow out quite badly, which is one of the hardest things to correct (basically only a better camera or multi capture can work against that).
Negs and/or 16mm and/or more even illumination helps, too. ~:?)
yeah, neg will help the highlights because of lower contrast, but will introduce the risk of poor color, banding and dust :P i'd suspect 16mm to have exactly the same problems with the same transfer unit though.
Paul, what stock/guage is the footage? Looks like small guage reversal.
it's K40 in super8 i think.
You'll notice that high-end filmed TV shows often blow out highlights, but since it's 35mm colour neg, it just looks better - inherently more area/information.
well, obviously you'll have to clip highlight at *some* point since the tv just cant reproduce the same range as a projection, but with high end machines the falloff will look much smoother.. also, what i was refering to is the large areas that are completely filled with white, and the red channel actually already clips in the fleshtones.

been fighting with that myself for a while till i found a solution
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Post by paulcotto »

That footage is K25 DS8 I think. I shot DS8 and K40 super-8 the same day so I cant remember which it is. I think if I adjust exposure to capture the highlights I can adjust the gamma to correct the rest. Keep in mind I just put this system together yesterday so I will get better results when I have more practice.

Regards,
Paul Cotto
Mitch Perkins wrote:
christoph wrote:
paulcotto wrote:Here is an 80 meg short uncompressed AVI for compairison>>
looks quite nice, glad to hear the bonsai works well...
unfortunately the highlights still blow out quite badly, which is one of the hardest things to correct (basically only a better camera or multi capture can work against that).

++ christoph ++
Negs and/or 16mm and/or more even illumination helps, too. ~:?)

Paul, what stock/guage is the footage? Looks like small guage reversal.

You'll notice that high-end filmed TV shows often blow out highlights, but since it's 35mm colour neg, it just looks better - inherently more area/information.

Mitch
Don't worry about equipment so much and make your movie!
Mitch Perkins
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Post by Mitch Perkins »

christoph wrote:
Mitch Perkins wrote:
christoph wrote:unfortunately the highlights still blow out quite badly, which is one of the hardest things to correct (basically only a better camera or multi capture can work against that).
Negs and/or 16mm and/or more even illumination helps, too. ~:?)
yeah, neg will help the highlights because of lower contrast, but will introduce the risk of poor color, banding and dust :P i'd suspect 16mm to have exactly the same problems with the same transfer unit though.
How so, poor colour from the negs?
Why would negs band any more than reversal?
You can't not shoot the negs for fear of dust. PTRs, or an Iso "wetgate" help(s) a lot.
christoph wrote:
You'll notice that high-end filmed TV shows often blow out highlights, but since it's 35mm colour neg, it just looks better - inherently more area/information.
well, obviously you'll have to clip highlight at *some* point since the tv just cant reproduce the same range as a projection, but with high end machines the falloff will look much smoother.. also, what i was refering to is the large areas that are completely filled with white, and the red channel actually already clips in the fleshtones.

been fighting with that myself for a while till i found a solution
++ christoph ++
Did you already post the solution?
I was a bit unclear in my meaning wrt TV show highlight blowouts - I meant they do it on purpose for effect, sometimes...but of course it looks so much better cuz it's top of the line all the way, eh?

Using the VX2000, I basically avoid clipping by dimming the light source until highlight detail is there, then white balancing to get the colours in line.

I need to post some stuff so you can tell me if you see something I'm missing - very important. I s'pose I should start a new thread for the purpose [sorry Paul].

Mitch
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Post by christoph »

hi mitch,

a few clarifications to my comments...
Mitch Perkins wrote:How so, poor colour from the negs?
because getting accurate colors from negatives requires a advanced color LUT (look-up table).. just adjusting the levels is not going to give accurate transfers.
Why would negs band any more than reversal?
because you only use about half of the range of the camera, then stretch it out and have to do serious color adjustments.. this will be slightly less of an issue if you capture in 10bits, however, most cameras have too much noise to make full advantage of this anyway.
You can't not shoot the negs for fear of dust. PTRs, or an Iso "wetgate" help(s) a lot.
true, i just wanted to point out that it's a bigger issue then reversal on diy transfers ;)
on the other hand, most professional transfers dont have a wetgate either for super8, so i guess you have a point there, maybe it's better to do it yourself.
btw, how does your wetgate work?

been fighting with that myself for a while till i found a solution
Did you already post the solution?
jeah, get a better ccd or do multi captures ;)
the first is expensive though, and the second is slow and requires quite a lot of experience with digital post-production.
Using the VX2000, I basically avoid clipping by dimming the light source until highlight detail is there, then white balancing to get the colours in line.
that will help the highlights but loose shadow details.. depending on the subject and your personal preferences, this might look better than blown out highlights though.

btw, i'm not trying to criticise everything, most people are happy with the results they get and this is what counts in the end... i'm just trying to point out some things that personally i found to be an issue with diy transfers (actually, most of those points apply to professional services too, which is the main reason i started to do some research myself)

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Post by HTTK »

Those are really some great transfers. Thanks alot for sharing this info/clips with us. ;)
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Post by Mitch Perkins »

christoph wrote:hi mitch,

a few clarifications to my comments...
Mitch Perkins wrote:How so, poor colour from the negs?
because getting accurate colors from negatives requires a advanced color LUT (look-up table).. just adjusting the levels is not going to give accurate transfers.
Okay. I'll not quibble over the difference between "poor", and "inaccurate". ~:?)
It's been my experience that, during capture, if white's white, the rest pretty much falls in line, at least until further CC...
So far, with certain exceptions, I haven't found colour to be a problem with the negs. Check out the first pic that comes up on the PhotoPlays link below. What I *am* still grappling with is the grain in darker areas/shots. You can crush it out, but it comes right back when you subsequently lighten the shot. I'm looking for a way to reduce or blend/blur this grain without loss of sharpness. The real solution is to shoot in enough light that it's not a problem - it's weird; outdoor shots properly exposed do not exhibit this grain even in black areas...
christoph wrote:
Why would negs band any more than reversal?
because you only use about half of the range of the camera, then stretch it out and have to do serious color adjustments.. this will be slightly less of an issue if you capture in 10bits, however, most cameras have too much noise to make full advantage of this anyway.
I'm not certain of this, but I think with the turqoise filter in the light path to deal w/the orange mask, and the VX2000 inverting the image in realtime, more than half the range of the camera is being used. Again, I'm far less technically involved in this than you are, so perhaps I'm not even addressing your point.
christoph wrote:
You can't not shoot the negs for fear of dust. PTRs, or an Iso "wetgate" help(s) a lot.
true, i just wanted to point out that it's a bigger issue then reversal on diy transfers ;)
on the other hand, most professional transfers dont have a wetgate either for super8, so i guess you have a point there, maybe it's better to do it yourself.
btw, how does your wetgate work?
Yes, the negs are in love with dust more than reversal. My "wetgate" consists of two pads soaked in Isopropylene placed before takeup. The Iso stays on the film until through the gate, fillng/eliminating base scratches. The dust stays on the pads.

christoph wrote:
been fighting with that myself for a while till i found a solution
Did you already post the solution?
jeah, get a better ccd or do multi captures ;)
the first is expensive though, and the second is slow and requires quite a lot of experience with digital post-production.
Add to that how good stuff looks xferred with a 3chip prosumer camera, and I can't justify spending any more cash.~:?)
I really must post some more stuff...though viewing on an NTSC monitor is the only way to judge these issues.
christoph wrote:
Using the VX2000, I basically avoid clipping by dimming the light source until highlight detail is there, then white balancing to get the colours in line.
that will help the highlights but loose shadow details.. depending on the subject and your personal preferences, this might look better than blown out highlights though.
The negs have so much latitude you can have your highlights and shadows too - again, provided the film is properly exposed to begin with...
christoph wrote:btw, i'm not trying to criticise everything, most people are happy with the results they get and this is what counts in the end... i'm just trying to point out some things that personally i found to be an issue with diy transfers (actually, most of those points apply to professional services too, which is the main reason i started to do some research myself)

++ christoph ++
No worries - it's good to discuss these things. I have noticed I'm way less technical about the xfer than a lot of folks here. I always figured if looks good, then let's go. Hence the feature "Sleep Always". That was over five years ago, and the transfer is even better now!

Mitch
Last edited by Mitch Perkins on Sun Jul 09, 2006 10:27 pm, edited 1 time in total.
Mitch Perkins
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Post by Mitch Perkins »

paulcotto wrote:That footage is K25 DS8 I think. I shot DS8 and K40 super-8 the same day so I cant remember which it is. I think if I adjust exposure to capture the highlights I can adjust the gamma to correct the rest. Keep in mind I just put this system together yesterday so I will get better results when I have more practice.

Regards,
Paul Cotto


Make it perfect NOW!! ~:?)

I think you're right about highlights/gamma, within certain parameters; the K40 was so contrasty, going to TV only made things worse. Do you plan to set up to xfer the negs?
If you can't invert during capture, you can learn to recognise a healthy neg image - OR - I'm not sure, have to check, but I think you can white balance off the neg image to get you close so that when you do invert, minimal CC will be required.

Mitch
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Post by paulcotto »

I have been playing around with VirtualDub 1.6 and real-time capture with filters. I can correct almost any problem in real time while transferring from the BosaiDrive to my XP box via SDI by applying filters during capture. The only problem is I cant do any real-time adjustment to the filters, but it still is a big improvement. The CPU on my PC wont even break 25% usage during capture and no dropped frames to my Raid-0. The megabit rate of SDI is 270 and since there is no compression going on the CPU just works on applying the filters. The utility that comes from Blackmagic is very unsophisticated and just allows deck control and automated capture. So far I am very happy with the results.

Regards,
Paul Cotto
Don't worry about equipment so much and make your movie!
camera8mm
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Post by camera8mm »

i cant find any reference to the kodak telecine projector you are using as a 8mm or super 8 projector. its listed as 16mm.
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