Search found 37 matches

by andynguyen
Thu Jan 04, 2018 5:52 am
Forum: Black & White Film Development
Topic: dissolving phenidone
Replies: 3
Views: 417

Re: dissolving phenidone

I work quite regularly with Phenidone & I've found that the fastest way is to dissolve it in drug store alcohol, the 90% type. it dissolve quite quickly with minimum fuss
by andynguyen
Sun Sep 24, 2017 9:01 am
Forum: Black & White Film Development
Topic: a different logic to stand-dev
Replies: 2
Views: 445

Re: a different logic to stand-dev

ok, i'll run a test next week. 1 roll of film cut in half & rodinal should suffice. I'll measure the neg density with my Kodak color densitometer. Hopefully it will yield some sort of difference
by andynguyen
Fri Sep 22, 2017 6:06 am
Forum: Black & White Film Development
Topic: a different logic to stand-dev
Replies: 2
Views: 445

a different logic to stand-dev

well, we all know stand-dev & the way people most usually do it is agitation for 30s, then stand it for whatever amount of time they desire. The reasoning is that if there is no agitation then the chemical exchange happens mostly via diffusion & a little bit of convection due to density gradient. Th...
by andynguyen
Mon Aug 28, 2017 9:38 pm
Forum: Darkroom Equipment for Shipping Costs
Topic: Lots of Equipment for Shipping Cost
Replies: 6
Views: 884

Re: Lots of Equipment for Shipping Cost

Oh my... it's a gold mine you're sitting on, Steve...

If I may, I would like to have these:

Omega D5 enlarger (minus the baseboard for weight reduction)
2 11x14 paper safe
4 20x24 trays
2 grain focusers
1 archival washer (hopefully 11x14 or bigger)
1 135mm lens
by andynguyen
Wed Aug 23, 2017 2:08 am
Forum: Black & White Film Development
Topic: vertical tray for space constrain
Replies: 2
Views: 563

Re: vertical tray for space constrain

Thank you Steve for the affirmation. Now I can confidently put my money and time into making it.
by andynguyen
Tue Aug 15, 2017 10:02 am
Forum: Black & White Film Development
Topic: vertical tray for space constrain
Replies: 2
Views: 563

vertical tray for space constrain

Alright, this might sound weird, but please bear with me, & then give me your thoughts My darkroom is build inside my small washroom. the biggest set of trays I can accommodate without tripping over myself or the tray is 12x16, 4 of them. But occasionally I envision myself doing bigger prints than t...
by andynguyen
Wed Jul 12, 2017 10:49 am
Forum: Using Pyro
Topic: How I became a Pyro man.
Replies: 25
Views: 7185

Re: How I became a Pyro man.

i've been using Harald's formula for sometime now, in comparison with my version of Pyrocat-HD (+Vit C & some added organic restrainer). My comment is per following: - Beutler Pyro can yield extremely high-acutance, perhaps due to edge effect - It's very energetic & often stretch the midtone contras...
by andynguyen
Fri Jul 07, 2017 8:24 pm
Forum: Fixers
Topic: Convert TF-2 to a rapid fix with the addition of ammonium chloride
Replies: 3
Views: 1110

Re: Convert TF-2 to a rapid fix with the addition of ammonium chloride

you probably already tried it by now. fwiw, i just got hold of a Kodak manual & in it there's a formula for Kodak rapid fixing bath F-7 Hypo: 360gr Ammonium Chloride: 50gr Sodium Sulfite: 15gr Acetic Acid 28%: 48cc Boric Acid: 7.5gr Potass Alum: 15gr But i'd omit the alum & boric acid, assuming they...
by andynguyen
Thu Jul 06, 2017 9:07 am
Forum: Darkroom Equipment Wanted
Topic: beseler 45 dichroic head
Replies: 0
Views: 376

beseler 45 dichroic head

i'm currently using Minolta-beseler 45A head. it's great, but i'm having difficulty doing dodging & burning with it, because it operates base on density, not time. This is a long shot posting here, but I'm looking for a beseler 45 dichroic head. please shout out if you have a spare one to let go. th...
by andynguyen
Sat Jun 24, 2017 9:57 am
Forum: Color Film Processing
Topic: Pushing Ektar 100 (Help Needed)
Replies: 3
Views: 973

Re: Pushing Ektar 100 (Help Needed)

idk if this reply is too late for the roll you mentioned. but yes, it is do-able. I often do it with the Noritsu V-50 in my lab. I'd just stop the film drive as the film is fully submerged in the CD tank for an extra 30-40s for a 2-stop push. The films often come out with non-noticable color cast. S...
by andynguyen
Fri May 26, 2017 2:55 pm
Forum: Open Discussion
Topic: 8X10 LED VC ENLARGER HEAD PROJECT
Replies: 6
Views: 1973

Re: 8X10 LED VC ENLARGER HEAD PROJECT

This is insane! You really took it into your own hands to create things that work for you. I'm also trying to fashion a similar one out of a spolt 45A head. I'm still stuck though: I havent figured out how to wire the timer into the setup. From what i've figured out: - if the timer connects to the 1...
by andynguyen
Tue May 09, 2017 11:50 pm
Forum: Using Pyro
Topic: How I became a Pyro man.
Replies: 25
Views: 7185

Re: How I became a Pyro man.

Dear Harald, https://books.google.com.vn/books?id=xUCNBgAAQBAJ&pg=PA181&lpg=PA181&dq=ammonium+thiocyanate+fogging+photo&source=bl&ots=Kp1sY4BFY2&sig=2zykZmWcAQl-OWcL0cmoWG_D9as&hl=en&sa=X&ved=0ahUKEwjvouz2oePTAhWHp48KHSoCCmIQ6AEIPDAK#v=onepage&q&f=false I was wondering about the role of ATC & I foun...
by andynguyen
Mon Mar 20, 2017 8:33 pm
Forum: Darkroom Equipment for Shipping Costs
Topic: Beseler 4x5 w/ 3 lens turret
Replies: 2
Views: 984

Re: Beseler 4x5 w/ 3 lens turret

May I know which model it is? My friend, upon seeing the 45v-xl I've gotten from Linebarger is hugely hooked.

I myself i'm trying to make a VC head from the spare (non-working) 45A head that Linebarger gave me, but being electronically untrained i'm struggling.
by andynguyen
Mon Feb 27, 2017 7:51 pm
Forum: Darkroom Equipment for Sale
Topic: LF darkroom equipment for sale
Replies: 11
Views: 2947

Re: LF darkroom equipment for sale

Alright, so yesterday all the pieces arrived! I omitted the baseboard to cut shipping cost (to my country). So i've gotta make a new one b4 I can get this giant up & running. Several corners suffered bruises & bent, but nothing a good spanner wouldnt fix. The only sad thing is the glass neg carrier ...
by andynguyen
Wed Jan 18, 2017 8:10 pm
Forum: Black & White Printing (formerly Enlarging & Printing)
Topic: Similarities in MQ developers
Replies: 12
Views: 2522

Similarities in MQ developers

Hmmm, if I were you, I'd leave them out entirely & add some metabisulfite as additional preservatives. The carbonate can be added later on as powder. the KBr or BTZ can be added as % solution as you wish. That way you add the exact amount you want, instead of having to subtract the "base" from the r...
by andynguyen
Tue Jan 17, 2017 10:01 am
Forum: Black & White Printing (formerly Enlarging & Printing)
Topic: Similarities in MQ developers
Replies: 12
Views: 2522

Similarities in MQ developers

Tim, your observation is right on. & so is your MQFlex formula. Something similar should have been done before. I remember reading somewhere that Patrick Gainer (& many others) had some sort of "base" & they adjust it using carbonate (by tea-spoon) & 10% KBr (using a dropper). I dont see why your ap...
by andynguyen
Fri Dec 30, 2016 9:12 am
Forum: Black & White Film Development
Topic: Rodinal
Replies: 3
Views: 1252

Rodinal

i'm trying to put together Rodinal. somehow the formula given here https://www.flickr.com/groups/32592441@N00/discuss/72157633978523578/ and here http://www.digitaltruth.com/articles/stainingdevs.php look similar & the amount of active ingredient seems to agree. while in the Developing Cookbook vers...
by andynguyen
Mon Dec 05, 2016 8:28 am
Forum: Black & White Film Development
Topic: Halide ions & other byproduct's effect on developer
Replies: 1
Views: 845

Halide ions & other byproduct's effect on developer

I dont know who else to ask, so here goes: As most of us knows, halide ions are generated as developer reacts with silver halide on the film surface. & bromide, in particular, is a restrainer. As I test developer mix only using 6-7 135 frames, I start to wonder: would the film surface vs developer v...
by andynguyen
Sun Dec 04, 2016 11:52 pm
Forum: Fixers
Topic: Alkaline Hypo
Replies: 12
Views: 2809

Alkaline Hypo

Thank you both, Steve & Bill, for your replies. Certainly I'm enlightened quite a bit. I didnt know TF stands for Troop Fixers. I do have a pH meter, though I've not been checking & recording as often as I should. I will try to keep a log from now. I'm scaling up the operation (coz we're trying to o...
by andynguyen
Sun Dec 04, 2016 8:58 am
Forum: Fixers
Topic: Alkaline Hypo
Replies: 12
Views: 2809

Alkaline Hypo

Steve, i'm gonna pick your brain here a lil: I read somewhere that fixers were acidic because when the acid was necessary for the alum hardener. Otherwise it can be omitted. So recently, in an effort to make a fixer that: - is non-acidic - rapid, but without using AT (coz i cant source for that loca...
by andynguyen
Mon Nov 21, 2016 9:56 am
Forum: Darkroom Equipment for Sale
Topic: Photo Paper - 8x10 to 20x24 - Kodak, Ilford - RC and Fiber
Replies: 2
Views: 1214

Photo Paper - 8x10 to 20x24 - Kodak, Ilford - RC and Fiber

please send me the inventory list. thank you.
by andynguyen
Mon Oct 10, 2016 8:47 pm
Forum: Black & White Film Development
Topic: Fx-55???
Replies: 6
Views: 1698

Fx-55???

I use a solution of Phenidone in ethylene alcohol, so the measuring is somewhat simplified & the error is managed. perhaps i'll try it soon. Thanks for the time provided, Simon! Regarding fix, i believe adding NH4Cl would speed up your fix, but i doubt if it'd approach the speed of true rapid fix
by andynguyen
Sun Oct 02, 2016 10:40 pm
Forum: Darkroom Equipment for Sale
Topic: LF darkroom equipment for sale
Replies: 11
Views: 2947

LF darkroom equipment for sale

Steve, would you by any chance have thelinebargers contact? It seems he doesnt check in here often...
by andynguyen
Tue Sep 27, 2016 7:48 am
Forum: Darkroom Equipment for Shipping Costs
Topic: D5 Column and Lens Stage
Replies: 7
Views: 1813

D5 Column and Lens Stage

Thank you Steve. Let's see if I can secure his set. It does look very complete & ready to rock
by andynguyen
Mon Sep 26, 2016 9:00 am
Forum: Darkroom Equipment for Sale
Topic: LF darkroom equipment for sale
Replies: 11
Views: 2947

LF darkroom equipment for sale

i'd really love to have the set. may i have your email address in order to finalize this?