 In addition, the calotype produced a less clear image than the daguerreotype.The use of paper as a negative meant that the texture and fibers of the paper were visible in prints made from it, leading to an image that was slightly grainy or fuzzy compared to daguerreotypes, which were usually sharp and clear.Nevertheless, calotypes—and the salted paper prints that were made from them—remained popular in the United Kingdom and on the European continent outside France in the 1850s, especially among the amateur calotypists, who prized the aesthetics of calotypes and also wanted to differentiate from commercial photographers, until the collodion process enabled both to make glass negatives combining the sharpness of a daguerreotype with the replicability of a calotype later in the nineteenth century.