你的理解不符合英文的表达习惯。表示“更多”时，more应位于表示“数量”的词之后，如one (two, three, four…) more, a few more, several more, many more, some more...等等。photos是可数名词复数，故用many more修饰。

1. many more修饰复数名词，若不接名词，more指代复数名词。例如：

I hope to have many more years with you. 我希望还可以和你们一起度过更多的岁月。

Some students are against the plan, but many more support it. 一些同学反对这个计划，但是更多的同学支持它。

2. much more修饰不可数名词，若不接名词，more指代不可数名词。例如：

He earned much more money than his brother. 他挣的钱比他兄弟多多了。

I have much more to do. 我有很多事要做。

3. much more, far more, even more, still more等可在比较级句式中修饰形容词或副词，表“更加……”，但many more不能这样用。例如：

I find urban rail traffic much more convenient. 我发现城市轨道交通方便多了。