Image Processing for Hybrid Processes III – Digitization with Camera

In the precedent post Image Processing for Hybrid Processes II – Digitization with Scanner,  I have explained that technological obsolescence is nowadays a serious constrain for a suited digitization, specially with high end level scanners. Even in professional and domestic environments, the use of a digital camera is by now the better and useful way …

Printing Negatives or Positives for Alternative Processes

A lot of literature has been written about the best way to inkjet printing life size negatives or positives, both intended for the so called alternative photographic processes. From the early days of digital image printer models to current photographic quality printers, a lot of proposals have been developed. Some of those methods were based …

Image Processing for Hybrid Processes II – Digitization with Scanner

Although the technological obsolescence is nowadays a serious constrain for a suited digitization, specially with high end level scanners, I will explain some hints and tips useful for the current medium and high level scanners still available. The first question to be aware about the scanner performance is the actual possibilities to penetrate a given …

Image Processing for Hybrid Processes I – Introduction

Many old or classic photographic processes operates from a negative or a positive at life size of the final print. These intermediate negatives or positives can be traditionally elaborated on photographic film or, taking advantage of the digital image technology, inkjet printed on some suited transparent media. This later system need a previous digitization of …

Heliogravure VIII – More About Etching

In a previous post have been exposed a general method to reduce the number of etching baths and rationalize the relationship between the total etching time and the partial etching times in the respective baths. Here we will analyse a sequential fine tuning of a couple of ferric chloride baths having previously determined a total …