203461
Along with the other D-series Pentax DSLRs , the Pentax * ist DS , Pentax * ist DS2 , and Pentax * ist D have TTL-mode ( not only P-TTL ) for external flash .
 Pentax, Pentax, Pentax, Pentax
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pentax, Pentax, Pentax, Pentax