Hoar Frost With iPhone 11 Pro

I went out in the yard early yesterday and noticed a few leaves with frost. As I looked further I saw most of the leaves in the shade and grasses were covered with heavy Hoar Frost and looked interesting. Since I am still getting used to the iPhone 11 Pro, for the multi-image pano series,  I shot a few more images than usual to help prevent some distortion. But the sun was starting to melt some as it was rising, so I worked quickly to get some of the more interesting subjects. The featured image is 5 overlapping images (2 top, 2 bottom & 1 center) with the 4.3mm lens on my iPhone 11 Pro, then assembled and blended them in Photoshop. For the featured image, I overlapped more than usual since I am still getting use to the iPhone 11 Pro for panos since the lenses are so small. (Sometimes in using the iPhone pano feature, you get distortion or a “warping” look in the panorama). So most times I shoot a series of images to assemble myself in Photoshop. The lenses in the 11 Pro are 1.5mm ( 13mm, Full Frame Digital Equivalent is 13mm), 4.3mm ( 26mm equivalent, Full Frame Digital), and 6mm ( 52mm equivalent, Full Frame Digital).

Frost B_2img iP11_6mm_16x9_pano v1

2 image panorama, iPhone 11 Pro, 4.3mm lens, iPhone set to 16 x 9 format.

The following images are just single shots (except where noted) with the iPhone set to 16×9 capture format.

Hoar_Frost 3img IP_11_Pro_4_3 set 16x9_v1Hoar_Frost_v1_4_3_mm_v1_IMG_1269Hoar_Frost_IP_11_16x9_ v1IMG_1280Hoar_Frost_v1_IP_11_4_3mm_v1_IMG_1327

OAR_FROST_LEAF_IP11_PRO_4_3MM_8img_Stk_v1

2 Image panorama 4.3mm lens, to show more of the leaf and surrounding area with Hoar Frost.

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Hoar Frost on Leaves, 4.3 mm lens, 16×9 iPhone format, single image of above image.

Hoar_Frost Dandelion_v1_IP11_Pro_4_3mm_16x9_IMG_1291

Hoar Frost on Dandelion, 4.3 mm, iPhone 11 Pro, 16×9 format. (It was quite warm one day last week and a dandelion popped up.)

Hoar_Frost_leaf_v1_IP11_Pro_4_3mm_16x9IMG_1283

Hoar Frost on Leaf, 4.3mm, iPhone 11 Pro, 16×9 format

Early Morning Hoar Frost

We went to a local park early in the morning because it was perfect conditions for Hoar Frost. Hoar Frost is a deposit of ice crystals on objects exposed to the free air, such as grass blades, tree branches, or leaves. It is formed by direct condensation of water vapour to ice at temperatures below freezing and occurs when air is brought to its frost point by cooling. We had to get there before the sun hit those areas with the frost which makes it more difficult to photograph because there is not much light, meaning much slower shutter speeds. I did not have a tripod so I raised my ISO higher than I usually use. I was using a 150mm Sigma macro lens so I was shooting bursts hoping 1 or 2 frames might be a little sharper than others. With some of the handheld series, I loaded them into a layered Photoshop file and aligned them. Then I let Photoshop merge the sharpest areas of each into one file. It was fun searching for subjects out in the fields and you never know what you will find. Once the sun melted the Hoar Frost I noticed there were some amazing cloud formations. Since I only had the 150mm macro lens with me, I switched to my iPhone to capture some cloud panoramas for a future blog.

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Hoar Frost At Brigantine

While I was photographing the Mute Swans By Gull Pond at the Brigantine Div., Edwin B. Forsythe National Wildlife Refuge early in the morning, I noticed where I was standing, the ground was covered with “Hoar Frost”.

Hoar Frost is defined as “expressing the resemblance of white feathers of frost to an old man’s beard.”

First, to produce any frost, you need water vapor (gaseous form of water) in the air over cold ground with a surface dew point at least as cold as 32 degrees. When these water vapor molecules contact a subfreezing surface, such as a blade of grass, they jump directly from the gas state to solid state, a process known as”deposition”, leading to a coating of tiny ice crystals.

All images shot with the Canon 24 – 105mm @24mm or 105mm.

Hoary Frost v1 Brig 1 18_MAL0281Hoary Frost_MAL0284Hoary Frost v1 Brig 1 18_MAL0287Hoary Frost v1 Brig 1 18_MAL0290Hoary Frost v1 Brig 1 18_MAL0294

 

 

 

 

 

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