i have used royal purple before...Ive been using castrol GTX synthetic for the past maybe 5 or 6 changes.. I really have seen no difference in ither really. I can get 5 quarts and a good filter for like 25 bucks on sale..a little better that the 7.99 a quart +tx for royal purple. Anyone have a difference of opionion.
Employment. A tangible impact of photography has been the number of people employed in the industry, particularly after the introduction of 35mm film in the 1920s by the Kodak company. The innovation meant a number of people were needed to sell and service cameras and films. tangible impact of photography has been the number of people employed in the industry, particularly after the introduction of 35mm film in the 1920s by the Kodak company.
Cameras are ubiquitous today, and, from a technology perspective, the revolution is just beginning. Video cameras are becoming smaller and cheaper while the Internet is enabling unlimited live webcasting. Web camera usage has grown from one in 1991 to hundreds in the mid-1990s to hundreds of thousands today. Video cameras the size of postage stamps can be procured for under $100, and will certainly become even smaller and cheaper. To many, this is good news.