Very nice work. Photographic exposure is logarithmic, not linear. Note that the shutter speeds go in approximate doubling and the /f stops are powers of the square root of two. Rather that 1, 2, 3, 4, 5 and 6 minutes, you could use 1, 1:25, 2, 2:49, 4, 5:39 and 8. This will give a more uniform gradation of density.
Such a wonderfully informative video! Thank you for answering the question that I've had for a while about whither you can use the sun as your light source for platinum prints! Though I'm just beginning my journey in alternate photography I look forward to watching more of your informative videos.
You can expose either with a sun or with a UV box. The big advantages of a UV box are that it’s consistent and you can print in winter. But there are downsides: the cost, the footprint of the machine in your studio, the size limit (you can only make a print as big as your box will allow). Also, exposing in the sun allows you to dodge and burn. I prefer to use the sun for exposure whenever possible, so I try to save up my platinum printing for the summer. I’m so glad the video was helpful, and that’s great that you’re exploring alt process printing! I was surprised at how little video content there was when I got started with platinotype, so I just bought a kit, followed the instructions, and learned as I went. Hopefully I can help others by documenting my process.
Lovely work and well deserved of an exhibition. I would be interested to see how you make your digital negative. What process do you use for obtaining the ink colour/density before you print it on the pictorico paper? Many thanks for your content.
Thanks! I get my chemistry and Photoshop curves from Bostick & Sullivan, and I follow their digital negative instructions pretty much to the letter. As far as print settings, they suggest a color density of +20% (using an Epson printer). They also suggest adding yellow (color adjustment +75 vertical), which seems to help keep the highlights from getting too much UV exposure.
Congratulations on your upcoming exhibition. Are you really using platinum as your metal in the sensitizer, the warmth of the resulting print makes me think you are using palladium, not platinum?
Nicely done!
Thank you for this, nicely done sir, nicely done...
fascinating process ! great prints
Very nice work. Photographic exposure is logarithmic, not linear. Note that the shutter speeds go in approximate doubling and the /f stops are powers of the square root of two. Rather that 1, 2, 3, 4, 5 and 6 minutes, you could use 1, 1:25, 2, 2:49, 4, 5:39 and 8. This will give a more uniform gradation of density.
Such a wonderfully informative video! Thank you for answering the question that I've had for a while about whither you can use the sun as your light source for platinum prints! Though I'm just beginning my journey in alternate photography I look forward to watching more of your informative videos.
You can expose either with a sun or with a UV box. The big advantages of a UV box are that it’s consistent and you can print in winter. But there are downsides: the cost, the footprint of the machine in your studio, the size limit (you can only make a print as big as your box will allow). Also, exposing in the sun allows you to dodge and burn. I prefer to use the sun for exposure whenever possible, so I try to save up my platinum printing for the summer.
I’m so glad the video was helpful, and that’s great that you’re exploring alt process printing! I was surprised at how little video content there was when I got started with platinotype, so I just bought a kit, followed the instructions, and learned as I went. Hopefully I can help others by documenting my process.
Lovely work and well deserved of an exhibition. I would be interested to see how you make your digital negative. What process do you use for obtaining the ink colour/density before you print it on the pictorico paper?
Many thanks for your content.
Thanks! I get my chemistry and Photoshop curves from Bostick & Sullivan, and I follow their digital negative instructions pretty much to the letter. As far as print settings, they suggest a color density of +20% (using an Epson printer). They also suggest adding yellow (color adjustment +75 vertical), which seems to help keep the highlights from getting too much UV exposure.
Congratulations on your upcoming exhibition. Are you really using platinum as your metal in the sensitizer, the warmth of the resulting print makes me think you are using palladium, not platinum?
Thanks! It’s really platinum, no palladium. I am using Bergger COT-320 paper though, which to my eye is a little warm