@WBYeats,
WBYeats wrote:
Thank you~
Is it because that person must be dead?
We use 'latest' to mean 'most recent' when we are talking about an item in a current series which will definitely or possibly continue, or that has not definitely finished. The latest global warming data, the latest postcard my son sent from Thailand, the latest report from the earthquake zone, the latest sales figures from my restaurant. If a picture was taken a hundred years ago, the photographer is probably dead, and even if he isn't, the sequence has been interrupted too long for 'latest' to be used.