[Weevil]

Great results Sylvain - does auto focus work with the 250-600?

Thanks Bob!
yes AF works great with that combo!
it's just need good light because it's f8 wide open...

[RockvilleBob]

Thanks Bob!
yes AF works great with that combo!
it's just need good light because it's f8 wide open...

Your shots with that lens are terrific - skill is 90% but the 10% that lens contributes is terrific. Someday I may have to "splurge"

[Weevil]

Your shots with that lens are terrific - skill is 90% but the 10% that lens contributes is terrific. Someday I may have to "splurge"

Thanks Bob!


but I'd rather say that skills is more in the 50-60% range (I am now in a position that I better know it's limitations, plus I added a couple of things to get the best stabilization possible, sacrificing in portability) and the lens contributes to at least 40-50%... I am sure I would not get the same amount of results with, for example, a Sigma 150-500mm... (that I used t own) or a Tamron 150-600mm (If it would ever exist in PK Mount).

[Weevil]

(x-posted in the 300mm club)
Photo taken in Northern Quebec (Great Whale River watershed) during a 30-days canoeing expedition in summer 2014. (revisiting my archives....)


K-3 + DA*300 + HDTC (420mm). 1/320s, f5.6 (wide open), ISO100



Plongeon huard / Great Northern Loon [Gavia immer] by Sylvain Cote, sur Flickr

[r0ckstarr]

DA*300 + 1.4 HD TC

[Weevil]

(x-posted with the Reach of the Q thread)
Been shooting waterfowls this weekend, and had a chance to test the Q7 on my FA*250-600 + HDTC 1.4x, and after reviewing good advises on the Reach of the Q thread, I was able to get some interesting results...


The 2 next Photos taken with Pentax K-3 + FA*250-600 @ 600mm.
The 1.5x crop factor gives a 900mm FF equivalent.

photos are the original size (not cropped) from the K-3.



Bernache nonnette / Barnacle Goose [Branta leucopsis] by Sylvain Cote, sur Flickr



Bernache nonnette / Barnacle Goose [Branta leucopsis] by Sylvain Cote, sur Flickr


Photo taken with Pentax K-3 + HDTC 1.4x + FA*250-600 @ 600mm (840mm).
The 1.5x crop factor of the K-3 gives a 1260mm FF equivalent.

This photo is the original size (not cropped) from the K-3.



Bernache nonnette / Barnacle Goose [Branta leucopsis] by Sylvain Cote, sur Flickr


Photo taken with Pentax Q7 + Q-K Adapter on FA*250-600 + HDTC 1.4x.
The Lens + HDTC1.4x = 840mm (1260mm equivalent on a APS-C sensor), combined with the 4.59x crop factor of the Q7 sensor (Sensor size is 1/1.7" or 7.44 x 5.58 mm), that gives a total of 840mm x 4.59 = 3856mm !!!
I dont have to tell you that I am using a very sturdy tripod, and a IR remote shutter release to minimize the vibrations.

This photo is the original size (not cropped) from the Q7.



Bernache nonnette / Barnacle Goose [Branta leucopsis] by Sylvain Cote, sur Flickr






However, do I get more details if I crop the 24mp image from the K-3 + HDTC ? not sure...


this is an example of a crop image taken with the K-3 + HDTC + FA-250-600



Bernache nonnette / Barnacle Goose [Branta leucopsis] by Sylvain Cote, sur Flickr


a bit less crop here..



Bernache nonnette / Barnacle Goose [Branta leucopsis] by Sylvain Cote, sur Flickr

[jfn60]

I saw that some of you thinking about to use APSC-lenses with TC on FF.

Can someone test the DA*16-50 with the 1.4 TC? Or has someone it already done? Best on K5/K5 II(s) because of pixel-density.
That should be like a 22-70 F4 on K1.

Thank you

[Weevil]

another example on how the HDTC can perform, even with older f5.6 lenses... (xposted on the 300mm thread)

this bird was about... 130 meters away (figured that out in garmin Mapsource app)


image is cropped 1:4

American Wigeon in flight with FA250-600 +HDTC

@840mm, F8 (wide open), 1/1250, ISO800


Canard d'Amérique / American Wigeon [Anas americana] by Sylvain Cote, sur Flickr

[r0ckstarr]

X-post from 300 club.


DA*300 + 1.4 HD TC

[baro-nite]

f/8, slight crop (top and bottom only)

[normhead]

K-3 and DA* 200 ƒ2.8 and stacked F 1.7 AF adapter and HD DA 1.4 TCs for 476mm
400 ISO , ƒ8, AV (1/25s to 1/400s)

There are still some birds left on the back yard. I actually went out to get an American Tree Sparrow, I haven't posted one for a while. There were lots more.

American Tree Sparrow






Fox Sparrow


Evening Grosbeaks




White Throated Sparrow


Redwing Blackbird


Junco




Blue Jay

[Weevil]

K-3 and stacked 1.7 and 1.4 TCs for 476mm
400 ISO , ƒ8, AV (1/25s to 1/400s)

There are still some birds left on the back yard. I actually went out to get an American Tree Sparrow, I haven't posted one for a while. There were lots more.

American Tree Sparrow






Fox Sparrow


Evening Grosbeaks




White Throated Sparrow


Redwing Blackbird


Junco




Blue Jay

What lens did you used ? DA 300?

[normhead]

K-3 and DA* 200 ƒ2.8 and stacked F 1.7 AF adapter and HD DA 1.4 TCs for 476mm
400 ISO , ƒ8, AV (1/25s to 1/400s)

Thanks for asking, I've fixed the post so someone who wants to know 6 months from now won't have to wonder. I guess I was lazy yesterday.

[zzeitg]

Bees and bumble-bees (all DA*300 + 1.4x TC)

[dadipentak]

Bees and bumble-bees (all DA*300 + 1.4x TC)

Nice shooting!