What is "確かにコレじゃあな" supposed to mean here?


The scenario: Two people looking at a picture of their deceased relative.

Person 1:

> はぁーあ、こんな遺影じゃおちおち感傷にも浸れない

Which I believe translates to:

> I shouldn't get sentimental so carelessly over something like a picture

Person 2:

> 確かにコレじゃあなー

This response is confusing me, if 確かに means "certainly", コレ means "this" and
じゃあなー means "isn't it/right?" then that would would mean it literally
translates to "certainly this isn't it", I know I shouldn't think of things
too literally but I'm at a loss as to what it could mean in a more contextual
sense, can anyone please explain what it actually means?




You have mixed up じゃねえ and じゃあなー. In speech ない contracts to ねえ/ねぇ/ねー, but
never to なあ/なぁ/なー (except in Nagoya dialect where ない sounds similar to なぁ
/næː/).

  * 確かに: "certainly"
  * コレ: "this"
  * じゃあ: (colloquialism for では) 
    * で: "with/by" (method/means marker)
    * は: (topic/contrast marker, here used to [indicate some negative expression follows](https://japanese.stackexchange.com/q/1077/5010))
  * なー: ([sentence-end/filler particle](https://japanese.stackexchange.com/q/5240/5010) like ねー)

So this literally translates to "Certainly, with this, < _something negative
left unsaid_ >." A possible translation would be "With this...yeah." or even
"You can say that."

By the way こんな遺影 is "a portrait (of deceased person) like this", not
"something like a portrait". And why is
[おちおち](http://jisho.org/word/%E8%90%BD%E3%81%A1%E8%90%BD%E3%81%A1) translated
as carelessly?

