You can read the recommendations in the user guide, the technical guide or the installation guide for SONY DSLR-A390. You'll
find the answers to all your questions on the SONY DSLR-A390 in the user manual (information, specifications, safety advice, size,
accessories, etc.). Detailed instructions for use are in the User's Guide.
User manual SONY DSLR-A390
User guide SONY DSLR-A390
Operating instructions SONY DSLR-A390
Instructions for use SONY DSLR-A390
Instruction manual SONY DSLR-A390
Your user manual
SONY DSLR-A390