[Pentikonian]

A few recent pics. K-3ii/FA*600mm F4 ED [IF]/Kirk window mount/RRS BH-55 ball head.

Beautiful.

[Pentikonian]

Taken with the DA* 300mm. I think it’s a great lens and not only for distant objects.

Agreed. Flowers look delicate, well shot photo.

[Pentikonian]

DA* 300mm with DA 1.4 TC

Excellent!

[Pentikonian]

Test shots as promised.

FA*645 300/4.0 on the 645Z. All wide open.


Samwise 1


Pink roses


Transillumination 2

This one's a heavy crop (about 1/16th of the original image) for the pixel peepers. Also at f/4.0. I'd say the lens is a keeper


Samwise 3 (tight crop)

Beautiful shots, love the pup photos.

[Pentikonian]

K-3ii/FA*600mm F4 ED [IF]/Kirk window mount/RRS BH-55 ball head.

Little Owl in a dead tree.

Brilliant. Those little guys look similar to our Burrowing Owls. Another critter that can get me to grinning even on a bad day.

[tduell]

These things crack me up. Camo works good, but junior hasn't got the hang of it yet. Wonderful photo.

Thanks.

Cheers,
Terry

[Shedking]

Some good stuff here: Media and Publication – Dr Gráinne Cleary
But much of it might not be relevant to the UK.

Seed-eaters love sunflower seeds, but they are not good for them in all but small quantities: SINISTER SUNFLOWER SEEDS: THE TRUTH » Currumbin Valley Birds & Exotic Vetrenarian - Gold Coast

.

Wow, what a helpful post, Des. I'll have to bookmark it.

I should have added that feeders should only be filled with enough food to last 1-2 days : https://www.bto.org/sites/default/files/disease_review_paper_0.pdf

[WPRESTO]

.

Wow, what a helpful post, Des. I'll have to bookmark it.

I should have added that feeders should only be filled with enough food to last 1-2 days : https://www.bto.org/sites/default/files/disease_review_paper_0.pdf

I'll inject a small observation about "essential amino acids."

1) There are 20 amino acids that make up all proteins in the vast majority of living things
2) HUMANS, can fabricate ten of these amino acids from other types of organic molecules, for example, taking a carbohydrate, change some bonds, add an amino group, and voila, you have one of the amino acids
3) HUMANS CANNOT fabricate the other ten amino acids, but they are required to make proteins that we need. Consequently we must ingest in our food a certain minimum quantity of those ten amino acids. Consequently, these ten are called "essential amino acids" because it is essential that they are present in the human diet.
4) Meat of almost any kind has all 20 amino acids, but vegetables, and plant material in general, has far less protein and may be very short of or even missing some of the essential amino acids. This is why vegetarians, especially vegans, must have deep knowledge of what they eat, especially if they are raising children on a vegan diet.

AND HERE ARE THE KICKERS:

5) Animals that are predominantly or entirely herbivores have metabolic pathways that can fabricate more than the ten amino acids that humans can assemble from other organic molecules.
6) Precisely how many and which amino acids are essential in the diets of animals other than humans, especially herbivorous animals, is largely unknown for the vast majority of species.

[aslyfox]

one from a while ago [ with the target a long way away ]

male peregrine falcon perched high above the Yellowstone River in Yellowstone National Park

K 3 II + HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW + HD Pentax-DA 1.4x AW AF Rear Converter

[Aaron28]

sigma 150-500os..k-3ii....Guntersville dam

[WPRESTO]

Vario-Elmar 100~400mm @ 400mm

[redpit]

Three different white egrets, all taken in the last few days

Snowy



Great



Cattle



The first two with the DA*300mm and t/c, the last with the backup DA 55-300mm (just before sunset).

Beautiful images, all of them! The sunset light of the third one surely makes it stand out! Thanks for posting.

[MossyRocks]

Went out last night in the cold with the SMC A* 400/2.8. This is one 20 second astrotracer shot wide open at ISO 800 while the lens was still coming down to temp. The shot was taken to check settings, exposure, and tracking and would normally have been a throwaway one but was nice enough that I figured I would spent a few minutes developing it in RawTherapee to see what I would get. While it has coma it is from being wide open and not being fully cooled down. I am looking forward to processing the rest of the shots properly in a stack


Camera: K-3
ISO 800
Lens: SMC A* 400mm f/2.8
f-stop: 2.8
20 second exposure with astrotracer

[Aaron28]

sandhill crane....sigma 150-500os...k-3ii

[jacamar]

Beautiful images, all of them! The sunset light of the third one surely makes it stand out! Thanks for posting.

Thanks Redpit - I don't usually touch the "color temperature" slider but I gave it a nudge for that third shot because the "golden glow" effect in the original RAW file seemed a bit too much!