Search Amazon.com:
Register a SA Forums Account here!
JOINING THE SA FORUMS WILL REMOVE THIS BIG AD, THE ANNOYING UNDERLINED ADS, AND STUPID INTERSTITIAL ADS!!!

You can: log in, read the tech support FAQ, or request your lost password. This dumb message (and those ads) will appear on every screen until you register! Get rid of this crap by registering your own SA Forums Account and joining roughly 150,000 Goons, for the one-time price of $9.95! We charge money because it costs us $3,400 per month for bandwidth bills alone, and since we don't believe in shoving popup ads to our registered users, we try to make the money back through forum registrations.
«12 »
  • Post
  • Reply
McMadCow
Jan 19, 2005

With our rifles and grenades and some help from God.

nielsm posted:

1. Picture side towards the metal or towards the canvas?
2. How long should prints stay in it? Any visible indicators that they are finished?
3. How hot do these things actually get? It's probably best to load the print, turn on power, then turn off power before removing the print again, right?

1: Towards the canvas. What rontalvos said is correct. If you want to do them toward the metal side, you need some special chemical- the name of which escapes me. The result is a super glossy finish.
2: I keep mine in until the canvas dries on top. If you take them out when that goes away, the print is ever so slightly damp, but hot enough that the rest of the moisture evaporates off in a few minutes.
3: I leave mine on the entire time I'm working with washing and drying prints. It doesn't get so hot that it's a safety hazard.

Adbot
ADBOT LOVES YOU

8th-samurai
Aug 28, 2005

My office is in front room of a run down 12 megapixel sensor but the rent suits me and the landlord doesn't ask many questions.

Dorkroom Short Fiction Champion 2012

Rontalvos posted:

Interest check which I'll also be crossposting in the buy/sell thread.

Is anybody in the Central California (Fresno, Madera, Visalia, Hanford, Bakersfield) or the greater (Northern) Los Angeles Area interested in a darkroom setup? Enlarger that goes up to 4x5, a few lenses, a bunch of accessories.

I picked it up at a garage sale in a bundle with other stuff I wanted, but as I'm going to be in college for the next 5 years or so I don't have time to get back into wet printing so I might as well sell it to a goon cheap.

I'll document it all tomorrow in the daylight, but it's taking up space and I could use a few bucks.

If somebody outside california wants it that bad I will ship it but the enlarger is a beast and it won't be cheap.

I might be interested in a lens if you don't mind splitting things up and shipping to Seattle.

wanderlost
Dec 3, 2010


I am trying to print some negatives from the Lomo 360 spinner camera, and predictably having problems. The camera takes 35mm film, but each exposure captures a 360 degree image taking up roughly 6 frames worth of film.

I have access to my schools darkroom, which has bessler enlargers and negative carriers for 35mm and 6x7 120 film. Is there any way of putting a 4x5 negative carrier in this enlarger? How else can I go about this?

Pompous Rhombus
Mar 11, 2007


Didn't know this thread existed, got some reading to do. On ventilation, how good does it need to be? I've got some fans in my bathroom, but they don't seem super-strong. It's otherwise pretty ideal for converting to a darkroom; roomy enough and with small windows that can easily be blacked out.

My other option is taking a train an hour each way and paying for time at a darkroom cafe place in the prefectural capital. I think it's like $23/hour.

wanderlost posted:

I am trying to print some negatives from the Lomo 360 spinner camera, and predictably having problems. The camera takes 35mm film, but each exposure captures a 360 degree image taking up roughly 6 frames worth of film.

I have access to my schools darkroom, which has bessler enlargers and negative carriers for 35mm and 6x7 120 film. Is there any way of putting a 4x5 negative carrier in this enlarger? How else can I go about this?

Doing the math, it looks like you'd need an 8x10 enlarger to get all 6 frames (36mm = 1.41732283 inches, 1.41732283 x 6 is 8.5), then would either want to sandwich it between two sheets of glass or have a custom neg carrier cut.

QPZIL
Jun 1, 2003

THE SLOVAK SHOCK


When I enlarge, I do it in my bathroom with just the overhead fan on, and it's not even that strong. I've never passed out and I haven't died yet.

Though when I first Kodak bought stop bath way back when, I took a huge whiff of it because I was curious how it smelled and almost passed out. My nose tingled for like a week afterwards.

wanderlost
Dec 3, 2010


Pompous Rhombus posted:

Doing the math, it looks like you'd need an 8x10 enlarger to get all 6 frames (36mm = 1.41732283 inches, 1.41732283 x 6 is 8.5), then would either want to sandwich it between two sheets of glass or have a custom neg carrier cut.

Awesome, thank you! I went to the store today and picked up some optically flawless glass, I'm going to try to jurry rig a negative carrier in the darkroom tomorrow afternoon after I develop some film.

But, speaking of developing, I found a bottle of Adinol (rodinol) in the back of the developer cabinet, and I am anxious to try a 1:100 development. I have a roll of film, and a development time from the massive dev chart, but I wanna make sure I do the measurement right for the developer.

My tank holds 1 reel and has a volume of 10 oz. to make 10oz of developer at 1:100, I'd need .1oz of the Adinol. .1oz is 2.96cc. So, armed with a syringe and graduated cylinder, I want 10 oz of h20 and 3cc's of Adinol. Is that really right?

At that dilution, a single bottle must last decades. Does it go bad?

McMadCow
Jan 19, 2005

With our rifles and grenades and some help from God.

wanderlost posted:

At that dilution, a single bottle must last decades. Does it go bad?

Developer DOES go bad once it gets in contact with the air. At full-strength you should be good for a while, though.

atomicthumbs
Dec 26, 2010



Rodinal has a shelf life measured in years, even opened. Don't worry about it.

Pompous Rhombus
Mar 11, 2007


wanderlost posted:

Awesome, thank you! I went to the store today and picked up some optically flawless glass, I'm going to try to jurry rig a negative carrier in the darkroom tomorrow afternoon after I develop some film.

But, speaking of developing, I found a bottle of Adinol (rodinol) in the back of the developer cabinet, and I am anxious to try a 1:100 development. I have a roll of film, and a development time from the massive dev chart, but I wanna make sure I do the measurement right for the developer.

My tank holds 1 reel and has a volume of 10 oz. to make 10oz of developer at 1:100, I'd need .1oz of the Adinol. .1oz is 2.96cc. So, armed with a syringe and graduated cylinder, I want 10 oz of h20 and 3cc's of Adinol. Is that really right?

At that dilution, a single bottle must last decades. Does it go bad?

If you've got access to an 8x10 enlarger, go hog wild, and I'm really looking forward to seeing the results! I should have included in my post that your lab may very well not have one; 8x10 enlargers are fairly rare due to the massive size. Either way, I wish you luck!

I'd grab a bigger tank, being able to do 2 or 3 reels at a time is nice.

TheLastManStanding
Jan 14, 2008
Mash Buttons!

Pompous Rhombus posted:

If you've got access to an 8x10 enlarger, go hog wild, and I'm really looking forward to seeing the results! I should have included in my post that your lab may very well not have one; 8x10 enlargers are fairly rare due to the massive size. Either way, I wish you luck!
Comedy option: Build an 8x10 enlarger. (glass+bellows+8x10lens+lamp)

Ferris Bueller
May 12, 2001

"It is his fault he didn't lock the garage."


TheLastManStanding posted:

Comedy option: Build an 8x10 enlarger. (glass+bellows+8x10lens+lamp)

+Huge contraption to hold all of that a ways away from the paper with no vibrations.

wanderlost
Dec 3, 2010


Pompous Rhombus posted:

If you've got access to an 8x10 enlarger, go hog wild, and I'm really looking forward to seeing the results! I should have included in my post that your lab may very well not have one; 8x10 enlargers are fairly rare due to the massive size. Either way, I wish you luck!

I'd grab a bigger tank, being able to do 2 or 3 reels at a time is nice.

We don't have any 8x10 enlargers or 4x5 negative carriers for our bessler 23Cs. I found a 6x9 carrier that I used to print some stuff off this morning, but I'm pretty disappointed by the results. I'll try and get something scanned this week.

I have a 1 roll tank and a 5 roll tank. - I try to develop 5 at a time, but when I'm going to try new development techniques, I don't want to risk ruining 5 rolls so I want to try a single roll first with the Rodinol 1+100

Ferris Bueller
May 12, 2001

"It is his fault he didn't lock the garage."


wanderlost posted:

We don't have any 8x10 enlargers or 4x5 negative carriers for our bessler 23Cs. I found a 6x9 carrier that I used to print some stuff off this morning, but I'm pretty disappointed by the results. I'll try and get something scanned this week.

For good reason, the 23c can't go past 6x9.

8th-samurai
Aug 28, 2005

My office is in front room of a run down 12 megapixel sensor but the rent suits me and the landlord doesn't ask many questions.

Dorkroom Short Fiction Champion 2012

Ferris Bueller posted:

+Huge contraption to hold all of that a ways away from the paper with no vibrations.

Here after known as a tripod, since your huge rear end paper is going to have to be hung on the wall

Dr. Cogwerks
Oct 28, 2006

all I need is a grant and Project is go

Big printing is pretty damned fun. I played around with some forty-year-old 16x20 kodabromide recently, and despite it being a deep gray at the brightest, it's got me wanting to print a lot larger now.

nielsm
Jun 1, 2009

Not gonna wear that.

Dr. Cogwerks posted:

Big printing is pretty damned fun. I played around with some forty-year-old 16x20 kodabromide recently, and despite it being a deep gray at the brightest, it's got me wanting to print a lot larger now.

How do you develop huge prints like that? A bucket of developer and a painting brush?

atomicthumbs
Dec 26, 2010



nielsm posted:

How do you develop huge prints like that? A bucket of developer and a painting brush?

I've heard a bathtub can be useful.

Dr. Cogwerks
Oct 28, 2006

all I need is a grant and Project is go

nielsm posted:

How do you develop huge prints like that? A bucket of developer and a painting brush?

I work at my old college and the darkroom there has a bunch of 16x20 trays. I've got a 6x9 enlarger in my apartment hallway though, and since I'm cheap, I've been using painters trays to develop stuff up to 11x14 in my bathtub.

wanderlost
Dec 3, 2010


Tried a darkroom experiment today, things did not go well.

I ran two rolls of 120 Illford Delta 400 through my rolleiflex, identical exposure, lighting, and composition.
Roll 1 I developed normally using my school's standard (free) Kodak Developer 1:4.
Roll 2 I developed using some Rodinol/Adinol at a 1:100 dilution using a dev time I pulled from the Massive Dev Chart.

The first roll came out right, the second roll came out essentially blank. If I hold it up to the light, I can make out incredibly faint, ghostly images, but otherwise the strip is blank. What did I do wrong?

Paul MaudDib
May 2, 2006


Did you agitate properly? Low agitation times are different from high-agitation ones. Same thing for concentration, if you did a 1:25 time for a 1:100 solution it won't work. Is the Adinol relatively new (last 25 years)?

mysticp
Jul 15, 2004

BAM!

What were the exact amounts of liquid and what specific times did you use? The negatives must be underdeveloped, so it sounds like you did the 1:100 wrong. Considering it is supposed to have no agitations after the first minute you either got the timing wrong or the volume of developer wrong.

QPZIL
Jun 1, 2003

THE SLOVAK SHOCK


Also, I know some developers require at least 5ml of actual developer in the working solution to work correctly. I.e., if you had 3ml of Adinol in 300ml of water, it may not develop correctly - you would have to do 5ml+500ml.

...though now that I think of it, that doesn't make a lot of sense. Meh.

wanderlost
Dec 3, 2010


Paul MaudDib posted:

Did you agitate properly? Low agitation times are different from high-agitation ones. Same thing for concentration, if you did a 1:25 time for a 1:100 solution it won't work. Is the Adinol relatively new (last 25 years)?

I'm not sure that I agitated properly, see below. Adinol is new, ordered it from freestyle this month.

mysticp posted:

What were the exact amounts of liquid and what specific times did you use? The negatives must be underdeveloped, so it sounds like you did the 1:100 wrong. Considering it is supposed to have no agitations after the first minute you either got the timing wrong or the volume of developer wrong.

I tried to follow the directions on the massive dev chart as best I could: The smallest increment my darkroom is capable of measuring is 1/2oz, so that's what I based my ratio on. I used .5oz of developer and 50oz of water, mixed it up thoroughly, and developed for 36 minutes. The water was at the right temperature when it went into the tank, I agitated gently for 30 seconds, and then gave it a gently agitation every 5 minutes as per the dev chart.

mysticp
Jul 15, 2004

BAM!

wanderlost posted:

I tried to follow the directions on the massive dev chart as best I could: The smallest increment my darkroom is capable of measuring is 1/2oz, so that's what I based my ratio on. I used .5oz of developer and 50oz of water, mixed it up thoroughly, and developed for 36 minutes. The water was at the right temperature when it went into the tank, I agitated gently for 30 seconds, and then gave it a gently agitation every 5 minutes as per the dev chart.

Your timing is too short. The average time for 1:100 stand development is an hour (with the first minute agitation), though you can go longer, I wouldn't recommend it with the amount of developer you are using. You should buy a graduated cylinder that can measure in milliliters. One that goes to 500ml in 25ml increments and one that goes to 10ml in 1ml increments (or use a medication syringe).

Try this formula next time. 500ml water (assuming this covers the reel in your tank), 5ml rodinal. Agitate for first minute, stand for an hour. Stop/fix/wash.

Stand development is based on the fact that in regular development you are overusing the developer by a huge amount, so you have to limit the time. Stand dev you use just the amount of developer that you need to totally develop the film and no more, so when you are done the developer is totally exhausted. So theoretically you can leave it for as long as you want with no harm, but you need to leave it for long enough to exhaust the developer.

Paul MaudDib
May 2, 2006


^^^

My process is very similar to this. I use a baby syringe, you get them at the grocery store, they're about $2, have no needle, and are very good for measuring ml-volume stuff. I do one empty cycle (fill, empty back into the bottle) to get the airbubble out as much as possible.

He's right, you need to do more like an hour at 1:100. I do first minute, agitate at 5m and 30m for 5s each). Also, if you're in an especially cold area try to set it somewhere warm or worst case put it in a bit warmer to get the average at 20C.

Generally speaking, the more you agitate, the faster it will develop and the more contrast it will have. Stand development causes some areas to develop quickly and deplete their supply of locally available developer, which makes them stop. The other areas continue to develop normally, which reduces contrast. Make sure to knock the bubbles off before you let it sit, then try to disturb it as little as possible.

wanderlost
Dec 3, 2010


Ok, I think I might have discovered my problem. When I developed my roll, I did it in a single roll tank. It sounds like I didn't use enough of my developer solution. So, I'm going to go back today, and develop more film, but using a larger tank and a few dummy reels. I'll develop for longer, and report back this evening.

All my development is done with filtered 20c water. I'm working in my school's darkroom, which has mad decent gear.

Ferris Bueller
May 12, 2001

"It is his fault he didn't lock the garage."


[[ Please wait, retrieving information... ]]

QPZIL posted:

Also, I know some developers require at least 5ml of actual developer in the working solution to work correctly. I.e., if you had 3ml of Adinol in 300ml of water, it may not develop correctly - you would have to do 5ml+500ml.

...though now that I think of it, that doesn't make a lot of sense. Meh.

Even though the ratio would be correct there would not be enough actual chemical to adequately develop the film before it's depleted.

Spedman
Mar 12, 2010

Kangaroos hate Hasselblads

I've never had too much of a problem stand developing with Rodinal at 1:100 for 135 and 1:125 for 120 with the appropriate volumes. I just followed this guys tips at the rangefinder forum: http://www.rangefinderforum.com/for...96&postcount=47

Genderfluid
Jun 18, 2009

my mom is a slut

The darkroom at nyu has the best enlarger I've ever used; now that i've started using it, my prints have genuinely improved and I can't imagine working on anything else. It's a Zone VI LED enlarger. Instead of having a lamp, or two lamps, it has two banks of LEDs, one green (for soft light) and one blue (for hard). Each can be adjusted anywhere from 00 to 99 in terms of their brightness, leading to ridiculous amounts of control over brightness and contrast, and it makes it incredibly easy to split filter. Do one exposure at 99-00 (maximum soft light) and then one at (00-99) maximum hard light, and then burn if needed with anywhere from (99-33) to (33-99). It's a genuinely wonderful machine.

One catch: it's not available for sale any more, and neither are parts. If you can find one, that's awesome.

Paul MaudDib
May 2, 2006


I read about someone making his own somewhere out of a block of aluminum. If you've got a mill, you're set. Might still be possible with just a drill press, a hacksaw, and some ingenuity. Superbright LEDs are cheap, then you need some way to diffuse it a bit and possibly a way to cool the head.

Honestly I've even thought about trying to build one with dual blue and UV lights. Get an enlarger lens that's corrected from UV to at least blue if not the whole visible spectrum (so the blue and UV focus at the same distance), focus in blue, switch to the UV for printing. You could print silver-chloride like Lodima with something like that.

Paul MaudDib fucked around with this message at Oct 12, 2011 around 13:27

Genderfluid
Jun 18, 2009

my mom is a slut

Paul MaudDib posted:

I read about someone making his own somewhere out of a block of aluminum. If you've got a mill, you're set. Might still be possible with just a drill press, a hacksaw, and some ingenuity. Superbright LEDs are cheap, then you need some way to diffuse it a bit and possibly a way to cool the head.

Honestly I've even thought about trying to build one with dual blue and UV lights. Get an enlarger lens that's corrected from UV to at least blue if not the whole visible spectrum (so the blue and UV focus at the same distance), focus in blue, switch to the UV for printing. You could print silver-chloride like Lodima with something like that.

after some googling, there's a german company that makes LED banks up to 8x10 in blue and green. http://www.heilandelectronic.de/htm...tlicht_main.htm

here's the text from that site roughly translated

quote:

They wanted to use long Splitgrade ®?
But not replace your old enlarger, not convert the color head or not to allow the estimated Kondensorbeleuchtung you give up?



Then we have a solution for you. Replace the existing lighting system with little effort by our modern cold-light source. We supply the correct adapter with the same.

After intensive research, we have decided not to simply copy the technology to date, the noble gas-filled tubes. The Saviour cold light source consists of hundreds of high-intensity light emitting diodes (LED's) of the primary colors red, green and blue. This has many practical advantages over the previously known cold light sources.

No significant drift of light - stable light from the first second of
For the focus you have nearly white light available
No shock sensitivity
Arbitrarily adaptable to any enlarger
Function integrated red light, red light to change from direct exposure possible
Any size format achieved


In comparison with traditional halogen lamps opal or the LED light source produces only about 25% of the heat with an otherwise identical exposure effect. Randlichtabfall by the light source is now a thing of the past.
The life span of LEDs is several thousand hours, changing lamps are no longer valid. The cold light source is directly controlled by the Split Grade ® controller.

We adjust the size of the light surface and the adapter customized to your enlarger, are currently available sizes: 6x9 cm / 4x5 inch / 13x18 cm / 8x10 inch. Special versions are also possible, ask and ask us!

Technical data:

Supply: 230 V AC (+ / - 10%)
Available sizes: 6x9 / 4x5 inch / 13x18 cm / 8x10 inch
Consumption: Depending on size (see above) about 25 W / 50 W / 100 W / 200 W
Light density: blue: 0.5 cd / cm ², green: 0.7 cd / cm ², red: 0.4 cd / cm ², White: 1.5 cd / cm ²
Light Drift: <0.1 f-stops

Technical changes without prior notice.

http://www.heilandelectronic.de as of 14 August 2007

Ferris Bueller
May 12, 2001

"It is his fault he didn't lock the garage."


Paul MaudDib posted:

I read about someone making his own somewhere out of a block of aluminum. If you've got a mill, you're set. Might still be possible with just a drill press, a hacksaw, and some ingenuity. Superbright LEDs are cheap, then you need some way to diffuse it a bit and possibly a way to cool the head.

Honestly I've even thought about trying to build one with dual blue and UV lights. Get an enlarger lens that's corrected from UV to at least blue if not the whole visible spectrum (so the blue and UV focus at the same distance), focus in blue, switch to the UV for printing. You could print silver-chloride like Lodima with something like that.

Probably could do what the salt water aquarium folks do with their DIY LED light arrays they use in lieu of all the other fancy lights for coral and what not. Concept is pretty much the same.

Spedman
Mar 12, 2010

Kangaroos hate Hasselblads

I'm planing on doing some contact printing with some 4x5 film in the near future, and just wanted to know a few things if anyone has tried it:

- What kind of paper is best suited? I've seen people talk about silver chloride, but that seems like it's more trouble than its worth

- Are you using just a lamp or bare bulb?

- I'm right in assuming the process after the exposure of the paper is the same as any other printing process?

Genderfluid
Jun 18, 2009

my mom is a slut

Just started printing using 16x20 Ilford Warmtone Semi-matt. It's such a gorgeous paper, but at $4.20 a sheet it'd better be.

Dr. Cogwerks
Oct 28, 2006

all I need is a grant and Project is go

JaundiceDave posted:

Just started printing using 16x20 Ilford Warmtone Semi-matt. It's such a gorgeous paper, but at $4.20 a sheet it'd better be.

Selenium toning with warmtone paper =

Fragrag
Aug 3, 2007
The Worst Admin Ever bashes You in the head with his banhammer. It is smashed into the body, an unrecognizable mass! You have been struck down.

JaundiceDave posted:

Just started printing using 16x20 Ilford Warmtone Semi-matt. It's such a gorgeous paper, but at $4.20 a sheet it'd better be.

Holy poo poo, I feel bad for complaining that a 40x60cm sheet from Kentmere cost a euro.

Genderfluid
Jun 18, 2009

my mom is a slut

Dr. Cogwerks posted:

Selenium toning with warmtone paper =

I've never toned before, is it really worth the effort.

mysticp
Jul 15, 2004

BAM!

JaundiceDave posted:

I've never toned before, is it really worth the effort.

It's more than worth the effort. Just do it in a well ventilated room and wash the print thoroughly. It's essential if you want to produce an archival print.

Genderfluid
Jun 18, 2009

my mom is a slut

mysticp posted:

It's more than worth the effort. Just do it in a well ventilated room and wash the print thoroughly. It's essential if you want to produce an archival print.

Well, just ordered some Ilford selenium toner. Looking forward to seeing the results.

Adbot
ADBOT LOVES YOU

McMadCow
Jan 19, 2005

With our rifles and grenades and some help from God.

mysticp posted:

It's more than worth the effort. Just do it in a well ventilated room and wash the print thoroughly. It's essential if you want to produce an archival print.

I've still never pulled the trigger on selenium toning. From what I understand, it darkens the blacks a bit, adding a bit of contrast. That's all well and good, but I already print with my blacks about as far dark as possible while still getting some tone separation. Do you find you need to do any printing correction to prep for selenium?

My Flickr Page!

  • 1
  • 2
  • 3
  • 4
  • 5
  • Post
  • Reply
«12 »