Google combines storage for Drive and Photos
Initially, google started by giving 5GB space and that was kept separate from the storage you would get as a user of Google Photos but now Google is changing the policy to require the 5GB be shared storage between Drive and Photos.
This decision has both pros and cons:
If you’re someone who uses Photos a lot, but not drive, this will be a good change, because you’ll suddenly have 4GB more free space. If you only use Drive, you won’t notice a change. BUT if you use both, you may see yourself heading towards the need to buy a storage upgrade from Google, which of course also had a big jump in pricing when Drive was launched (20GB used to be $5 per year, now 25GB is $5 per month).
However the flaw of this decision is that if you buy a storage upgrade, the 5GB shared storage for Drive and Photos will not be counted as part of the total, not as a count to the total. This indicates, if you upgrade to 25GB of storage, you’ll end up with 25GB of storage instead of 31GB (25+5+1) that you could easily have before.