Excellent video! Thanks for taking the time to show how this process can be completed in home darkrooms.

Time consuming but well worth the effort; I highly recommend it.

Thank you Marco, very good insights. I definitely gonna try this!

Fantastic video!

Very informative. Looking forward to giving it a try!

GRAZIE

Amazing video; super helpful. Thank you!

Great video! Thank you! )))

Thank you for your clear and comprehensive video. I’ve recently tried this technique with some good results. There is one difference; I go from the sepia toner to the selenium toner with only a 2-3 minute wash between. Do you think it is necessary to carry out a full wash between the two toners?

Silver sulfide Ag2S Silver selenite Ag2Se

@MarcoFantin1

4 жыл бұрын

You are correct on the formulas. I think I did not want to add too many numbers in my description. However it is silver seleniDe Ag2Se, silver seleniTe would have selenium with oxidation state +4 as Ag2SeO3. This might be part of what is in the toner, altought I am just speculating.

Put a bit of petrol or other organic solvent on that apple cider label and peel it off, bad habits. Real enjoying the video mind just the health and safety officer in me coming out.

@MarcoFantin1

3 жыл бұрын

This is a very good point, I appreciate your comment. That bottle no longer exists!

Great vid bro👏Would this work using a standard bleach and sepia kit then selenium toning at the end?

@MarcoFantin1

4 жыл бұрын

Yes, I think it would work the same.

Hi Marco, this video was really great. Around 6:12 you mentioned something about a separate video that shows possible different colors in the sepia tone that result from using different ratios of Thiourea and Potassium Hydroxide. Did you post this other video? I would like to know more (specifically what ratio you used to get the "colder" sepia tone)

@MarcoFantin1

3 жыл бұрын

I find the ratio that I used in this video (8 g thiourea and 2 g potassium hydroxide per liter) to be the most pleasing. In my testing both higher and lower ratio were a less pleasant and warmer shade of yellow. This is why I was not motivated to do a follow up video, because I found the 8:2 ratio used in this video to be my favorite!

@rdawg7982

3 жыл бұрын

@@MarcoFantin1 Thanks !

Hi would this work with FOTOSPEED Sepia and Kodak selenium?

Can this be done with off the shelf sepia toner? Or do you have to mix specific chemicals to a specific dilution?...Also, do bleach come in any sort of off the shelf kit? I don't care much for playing chemistry.

@MarcoFantin1

2 жыл бұрын

This was done with off the shelf sepia. For bleach is just one chemical, potassium ferricyanide, ti dissolve in water, so pretty straightforward. Just need that a $10 balance for weighing a small amount

@Adrian-wd4rn

2 жыл бұрын

@@MarcoFantin1 Perfect! Any sources on how much Pot. Ferri. to mix to water? I'm not great at chemical mixing and ratios lol. I barely passed chemistry.

How do you control the different tones of brown ? Have you publish the video yet ?

@MarcoFantin1

5 жыл бұрын

The tones of brown can be controlled by changing the potassium hydroxide/thiourea ratio. I think the recipe described in this video gives the best shade of brown. Changing it gives more of a yellow tone, with lower contrast, that I think it is not suitable for most photos.

@earvinquero2037

4 жыл бұрын

@@MarcoFantin1 is it supposed to be sodium hydroxide instead of potassium hydroxide

Where do you purchase your chemicals from!?!

@MarcoFantin1

3 жыл бұрын

Photographers' formulary or ebay. I would trust the former more. Also, I may have gotten a few grams of KOH from the lab (I am a chemist). I won't get in prison for that. I remember in grad school my prof used to take 1 kg bottles just to unclog the toilet 😂.

is it not sodium hydroxide??