Nikon Unveils D3400 DSLR: 24.2 MP, Good Battery Life, $650 Price Tag Nikon has taken the wraps off the D3400 DSLR, which boasts a 24.2-megapixel sensor and double the battery life of its predecessor the D3300. The entry-level DSLR goes on sale in early September and will cost $650. by Anu Passary