Twitter to add photo filters to compete with Instagram

In the coming months, Twitter plans to update its mobile applications to introduce filters for photos that will allow people to share altered images on Twitter and bypass Instagram, the popular mobilecentric photo-sharing network, according to people who work at the company but asked not to be named as they are not allowed to discuss unannounced projects. The filters on Instagram make photos look like they were shot with 1960s Kodachrome or with 1890s sepia tone film. …