If you record the latitude and longitude of the pins without any recourse to OSM, for example because your camera has a built-in GPS, then displaying the data together with OSM data does not trigger any share-alike - you would at most be creating a collective database if you mixed OSM data and your data in a database, but displaying your data on top of OSM tiles would not even do that. However, if you rely on OSM to find the latitude and longitude of an object - for example, if your recordings just indicate that something was "at the intersection of A street and B street" and then you use OSM to actually locate that intersection - then your coordinate might form a derivative database. Even if that were the case, though, (1) the share-alike provision only kicks in if you make "substantial" use (https://wiki.osmfoundation.org/wiki/Licence/Community_Guidelines/Substantial_-_Guideline) (https://wiki.osmfoundation.org/wiki/Licence/Community_Guidelines/Substantial_-_Guideline ) and (2) even if share-alike kicks in, that doesn't mean your data becomes part of OSM, it just means that you have to make it available on request under ODbL.

If you record the latitude and longitude of the pins without any recourse to OSM, for example because your camera has a built-in GPS, then displaying the data together with OSM data does not trigger any share-alike - you would at most be creating a collective database if you mixed OSM data and your data in a database, but displaying your data on top of OSM tiles would not even do that. However, if you rely on OSM to find the latitude and longitude of an object - for example, if your recordings just indicate that something was "at the intersection of A street and B street" and then you use OSM to actually locate that intersection - then your coordinate might form a derivative database. Even if that were the case, though, (1) the share-alike provision only kicks in if you make "substantial" use (https://wiki.osmfoundation.org/wiki/Licence/Community_Guidelines/Substantial_-_Guideline) and (2) even if share-alike kicks in, that doesn't mean your data becomes part of OSM, it just means that you have to make it available on request under ODbL.