California Code, Penal Code - PEN § 311.1

(a) Every person who knowingly sends or causes to be sent, or brings or causes to be brought, into this state for sale or distribution, or in this state possesses, prepares, publishes, produces, develops, duplicates, or prints any representation of information, data, or image, including, but not limited to, any film, filmstrip, photograph, negative, slide, photocopy, videotape, video laser disc, computer hardware, computer software, computer floppy disc, data storage media, CD-ROM, or computer-generated equipment or any other computer-generated image that contains or incorporates in any manner, any film or filmstrip, with intent to distribute or to exhibit to, or to exchange with, others, or who offers to distribute, distributes, or exhibits to, or exchanges with, others, any obscene matter, knowing that the matter depicts a person under the age of 18 years personally engaging in or personally simulating sexual conduct, as defined in Section 311.4, shall be punished either by imprisonment in the county jail for up to one year, by a fine not to exceed one thousand dollars ($1,000), or by both the fine and imprisonment, or by imprisonment in the state prison, by a fine not to exceed ten thousand dollars ($10,000), or by the fine and imprisonment.

(b) This section does not apply to the activities of law enforcement and prosecuting agencies in the investigation and prosecution of criminal offenses or to legitimate medical, scientific, or educational activities, or to lawful conduct between spouses.

(c) This section does not apply to matter which depicts a child under the age of 18, which child is legally emancipated, including lawful conduct between spouses when one or both are under the age of 18.

(d) It does not constitute a violation of this section for a telephone corporation, as defined by Section 234 of the Public Utilities Code, to carry or transmit messages described in this chapter or perform related activities in providing telephone services.