A sudden and very rapid rise in temperature led to a massive, virtually explosion-like, leafing of the decidous riparian forests of the Nordre Øyeren delta, the largest inland delta of Northern Europe. The landscape overnight changed from dull greys into a bright, blazing green. Most of the trees are birches (Downy and Silver Birch) and their initial spring colour is a luminous almost lime-green, as the first week or so after leafing the "skin" (cuticula) of the leaf surface isn't properly developed and thus the foliage won't reflect the sky blues. After the first weeks the forest colours are more muted and take on a dullish green tinged with blue.
The leafing and opening of the pollen-loaded birch catkins coincided this year, thus anyone with a pollen allergy now is sneezing and coughing, yours truly included.
A cross-section of the riparian forests captured with the Nikkor 400mm f/4.5Z + TC14Z on my Z9. The distance to the houses in the background is around 4 km and they definitively are way out of the zone of focus. It was windy so I gave up any idea of focus stacking. Taken around 20:00 in the evening thus still plenty of light, but solar elevation is quite low this time of the day. We haven't the summer scenario yet.
