[mroeder75]

First shot with the SMC A* 400 f/2.8 from Friday once I got it mostly focused. I'm pretty sure the focus was slightly off as I don't have a bahtinov mask for this lens yet but it is pretty close.
Attachment 464562

Depends . . . which part of the lunar surface were you focusing on?

I am kidding of course. This is the sharpest land-based lunar image I believe I have seen

[Trissa]

With the Sigma 500 F4.5 and 2x Kenko Macro Converter and Pentax 1.4x Converter


And as a bonus:

[WPRESTO]

With the Sigma 500 F4.5 and 2x Kenko Macro Converter and Pentax 1.4x Converter


And as a bonus:

The image of Jupiter is a real coup, even some banding faintly visible. And the Medici Moons arrayed beautifully. Alas, those four little dots put an end to the mythology that we were at the center of the Universe, that everything revolved around us.

[str8talk83]

450mm on the 150-450mm & K-1


Dragonflys by Mike.Pursey, on Flickr

Superb dragon in flight!

---------- Post added 09-19-2019 at 06:28 AM ----------

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Last edited by str8talk83; 09-20-2019 at 06:17 AM.

[acoufap]

"Long-Beaks" (Tierpark Hellabrunn, Munich)






Both captured with Pentax KP and DA55-300PLM @ 300

[Mike.P®]

Superb dragon in flight!

Thanks.

Those are very nice indeed, I notice you are using the D500 with the new 500mm PF ... how are you finding the lens?
I mainly use my D500 with a Sigma 150-600mm Sport, also have the 500mm Sport but rarely take it because it just takes up too much space.

[Ducatigaz]

A few pictures of visiting B-2 stealth bombers to an airfield very close to me.

All taken with my K-5/Sigma 300mm F2.8 EX DG.















It's easy to see why they get mistaken for UFOs

[str8talk83]

Thanks.

Those are very nice indeed, I notice you are using the D500 with the new 500mm PF ... how are you finding the lens?
I mainly use my D500 with a Sigma 150-600mm Sport, also have the 500mm Sport but rarely take it because it just takes up too much space.

I really like the 500 PF a lot. It is one of those lenses that you have to try to really appreciate its advantages (in my opinion). It's not just the weight savings, but the size that I really like. I can keep the lens mounted on my D500 in a Think Tank Streetwalker (original version) Camera bag with the lens hood in place. That is quite an accomplishment, considering the fact that the bag is designed to fit a 70-200 in that slot. The lens is very sharp wide open and takes the TC 14E III very well to the point that I can't tell it's mounted from an image quality standpoint. The AF does struggle a little bit with the teleconverter for erratic birds in flight, but I would say that the autofocus with the teleconverter is similar to the 200-500 native. I find the autofocus to be very fast without the teleconverter and I rarely miss a tracked bird unless I make some kind of mistake.

I feel like we are spoiled now and sharpness is a wash between a high quality zoom like your 150-600 and the 500 PF. If I had to guess, I'd say that the 500 prime would take a teleconverter better than the zoom, but I haven't used that lens so I can't say for sure. The main advantage to me is the weight for someone like me who likes to go on photo walks or shoot from a kayak and prefers to be handheld.

[Weevil]

Simili-macro shot with Pentax K3II & DA*300ƒ/4


Amanite tue-mouche / Fly Agaric [Amanita muscaria]
by Weevil, on Flickr

[mroeder75]

With the Sigma 500 F4.5 and 2x Kenko Macro Converter and Pentax 1.4x Converter


And as a bonus:

Stunning.

[luftfluss]

This doesn't match @Trissa 's stunning moonshot, but the venerable K 500/4.5 + A 2x-L didn't fare too badly, I think... and would probably do even better if the photographer did better

[Shedking]

The late summer sun has kept the dragonflies active later into September than I would normally expect. Reaching them is tricky, however, as the roosting spots are often low in thick undergrowth. My Tokina 400mm performs best at moderate distances - just right for this roosting Migrant Hawker. However, the focus throw is too short to make DIF anything other than a spray and pray exercise.

[Mike.P®]

Kingfisher by Mike.Pursey, on Flickr


Kingfisher by Mike.Pursey, on Flickr

[Dan Rentea]

Kingfisher by Mike.Pursey, on Flickr


Kingfisher by Mike.Pursey, on Flickr

Juvenile (it has just a few months), female. Beautiful bird! If you're not already addicted by the kingfisher, you'll become one very soon.

[Des]

Waterbirds from Phillip Island, Victoria, Australia. K-3 + FA*300 f4.5.

Cape Barren Goose


Black Swans