With the new API 20.0 version, seems like we get access to photos using SmallPhotoUrl and FullPhotoUrl, but seems like i need to have my salesforce session while accessing these images.

I have 2 requirements:

1. Way to download the image (get Image method)

2. Or an external shared image which can be accessed without salesforce session,

Is it possible with new API 20?

With the new API 20.0 version, seems like we get access to photos using SmallPhotoUrl and FullPhotoUrl, but seems like i need to have my salesforce session while accessing these images.

I have 2 requirements:

1. Way to download the image (get Image method)

2. Or an external shared image which can be accessed without salesforce session,

Is it possible with new API 20?