NLS orthophotos

NLS orthophotos are an aerial photo data set covering the whole of Finland. The geometry of the orthophotos corresponds to a map.

NLS orthophotos are updated every 3 to 10 years.

The product is a part of the open data of the National Land Survey of Finland. More information: Acquisition of open data http://www.maanmittauslaitos.fi/en/maps-and-spatial-data/expert-users/topographic-data-and-how-acquire-it

Purpose:

Orthophotos are utilized for mapping and also for planning and monitoring the environment. Colour or black-and-white orthophotos are suitable for planning or as background material for various map presentations. Colour-IR orthophotos are best suitable for forest inventory.

Geographic location
Entire Finland
Responsible party

National Land Survey of Finland

Pixel size
0.25 m
0.5 m
Spatial representation
Raster
Data content

Film, black-and-white

Pixel size 0.5 metres.

Normal size 10,000 x 10,000 pixels (general map-sheet division, KKJ).

Normal size 12,000 x 12,000 pixels (TM35 map-sheet division, ETRS-TM35FIN) consists of a maximum of 256 different greyscale values (8 bit).

Film, colour-IR

Pixel size 0.5 m.

Normal size 10,000 x 10,000 pixels (general map-sheet division, KKJ).

Normal size 12,000 x 12,000 pixels (TM35 map-sheet division, ETRS-TM35FIN) consists of three colour channels (near-IR, red, green).

Each colour channel contains a maximum of 256 different shade values (8 bit).

Digital, colour

Pixel size 0.5 m.

Normal size 12,000 x 12,000 pixels (TM35 map-sheet division, ETRS-TM35FIN) consists of three colour channels (red, green, blue).

Each colour channel contains a maximum of 256 different shade values (8 bit).

Digital, colour-IR

Pixel size 0.5 m.

Normal size 12,000 x 12,000 pixels (TM35 map-sheet division, ETRS-TM35FIN) consists of three colour channels (near-IR, red, green).

Each colour channel contains a maximum of 256 different shade values (8 bit).

Digital, colour

Pixel size 0.25 m.

Normal size 6,000 x 6,000 pixels (TM35 map-sheet division, ETRS-TM35FIN) consists of three colour channels (red, green, blue).

Each colour channel contains a maximum of 256 different shade values (8 bit).

Digital, colour-IR

Pixel size 0.25 m.

Normal size 6,000 x 6,000 pixels (TM35 map-sheet division, ETRS-TM35FIN) consists of three colour channels (near-IR, red, green).

Each colour channel contains a maximum of 256 different shade values (8 bit).

Maintenance

The updating frequency of product versions Digital, colour 0.5 m and Digital, colour-IR 0.5 m is 3–10 years, depending on the area. The most up-to-date version is available via our service interfaces and browsing services.

Other product versions do not have a maintenance plan.

Coverage index maps (in finnish): https://www.maanmittauslaitos.fi/maastotiedonyllapito

Lineage

NLS Orthophotos is the only set of aerial photographs that covers the whole of Finland.

Orthophotos are available as of 1995. Starting from 2009, orthophotos are also available in colour and colour-infrared format. The coordinate reference system used in the photo shoots until 2007 was KKJ, i.e. the national grid coordinate system (zones of the coordinate reference system). As of 2008, the coordinate reference system used in aerial photos has been ETRS89/TM35FIN.

Starting from 2014, orthophotos with a 0.25 m pixel size are available for some random areas.

The accuracy of an orthophoto depends on the sensor used in aerial photography, the photographing altitude and the elevation model used in producing the orthophoto. The elevation model has the biggest influence on the geometrical accuracy of the photo. The positional accuracy of an orthophoto is 0.5–2 metres.

The product can be printed out on scale ranging from 1:1 000.

Conformity
COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
2010-12-08
The product does not meet the specifications.
Limitations on access

no limitations to public access

Reference system
ETRS89 / TM35FIN(E,N) (EPSG:3067)
N2000 height (EPSG:3900)
Distribution format
Tiff (tfw)
Further information

The metadata of the orthophotos is provided by request.

Maanmittauslaitoksen ortokuva

Product Price € (excl. VAT) Price € (incl. VAT)
77103010030
Ortokuva 1. kuva (maks 6 km*6 km)
89,27 110,70
77103010031
Ortokuva seuraavat kuvat
15,73 19,50
77103010032
Ortokuva koko Suomi
3150,00 3 906,00
77103010033
Ortokuva - kaikki yhden vuoden kuvat
1575,00 1 953,00
Not based on a decree