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Category: FAQ – Purchases

Aerial photos: What details can be distinguished in a photogram?

Our institute provides photographic materials as they are produced, without dealing with their specific use. All IGMI photograms, from 1935

What are the delivery times and download link expiration?

You will receive an email informing you that your purchased products are ready for download. To download, please log into

Aerial photos: How can I request aerial photos taken before 1936?

Due to the limited historical coverage, the search for pre-1936 photos is not automatic, but requires a request through the

Aerial photos: what is the Authenticated PDF and what does it include?

The Authenticated PDF is a file containing a high-resolution scan of a photogram. It has the digital signature of the

Aerial photos: what is the difference between photogrammetric and non-photogrammetric TIFF format?

The choice depends on the technical use of the file:

Aerial Photos: What is the difference between “Aerial Photos” and “30X30 Aerial Photos” products?

The difference is exclusively formal and is related to purchase options, since the level of quality and detail of the

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