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Ducatigaz · 02-25-2020, 10:44 AM - **11 Likes**

K-5/Sigma 800mm F5.6 APO EX/Gitzo 5532LS

**mlt** · 02-25-2020, 10:46 AM - **4 Likes**

This combo is sharp enough

normhead · 02-25-2020, 07:57 PM - **1 Like**

I bought my Tammy 300 so I'd have the same as the 200 2.8 on my K-1. Then I discovered that the 1.4 for 420x 1.53 = 647mm (crop factor.)

The trouble is, no matter what you do that 1.53 is good on any lens.
The one exception being the Tamron 2x works pretty good on the K-1 but it's soft on the K-3. SO I can get to 647mm equivalent on the K-3 but 600mm on the K-1, and the K-1 will have better resolution.

So despite crop factor, the K-1 and Tamron 300 2.8 and Tamorn 2x TC gives me more reach than any APS_c combo I own.

Those are a few of the things you don't know if you don't own the gear.

Tamron 300 2.8 and Tamron 2x TC for 600mm on the K-1

Really, not too shabby

**mroeder75** · 02-26-2020, 12:07 AM - **1 Like**

Originally posted by Ducatigaz

K-5/Sigma 800mm F5.6 APO EX/Gitzo 5532LS

I love this website. We have sparrows as big as predator owls. And owls in flight. What I can't do you all can do.

**termy** · 02-26-2020, 01:24 AM - **4 Likes**

sigma 135-400 APO DG.
Heavily cropped.

**jacamar** · 02-26-2020, 07:19 AM - **13 Likes**

A few more Costa Rica shots with the K-3, DA*300mm and 1.4x TC. Working with low light levels a lot of the time.

**cooks333** · 02-26-2020, 09:39 AM - **9 Likes**

B&W of the WWII and Lincoln Memorials from the base of the Washington Monument. K3 w/ DA*300mm.

**steamloco76** · 02-26-2020, 06:16 PM - **4 Likes**

A pair of mourning doves foraging in my neighbors yard. Tamron 55BB 500/8 Mirror lens on K5. The bokeh leaves a bit to be desired. Mirror lenses and busy backgrounds do not play well.

Ducatigaz · 02-27-2020, 03:48 AM - **20 Likes**

K-5/Sigma 800mm F5.6 APO EX/Gitzo 5532LS

Pentaxians · 02-27-2020, 05:11 AM - **14 Likes**

How about Asian eagle

Barred Eagle Owl, taken at Sandakan RDC December 2019, with my Kp + DA300 + TC1.4

**Canada_Rockies** · 02-27-2020, 12:45 PM

Originally posted by Pentaxians

How about Asian eagle

Barred Eagle Owl, taken at Sandakan RDC December 2019, with my Kp + DA300 + TC1.4

I love the owl in the last one shown. Beautiful

**cooks333** · 02-27-2020, 01:02 PM

Originally posted by Canada_Rockies

I love the owl in the last one shown. Beautiful

Owls are on my personal shortlist of most photogenic creatures. Others include foxes, penguins, and giraffes. Love all the recent owl shots here!

**luftfluss** · 02-27-2020, 03:05 PM - **1 Like**

Originally posted by Ducatigaz

K-5/Sigma 800mm F5.6 APO EX/Gitzo 5532LS

Stellar images, as usual.

It seems to me that the Sigma 800/5.6 renders busy backgrounds a bit more roughly than your Pentax 600/4 does. Do you feel the same way?

Ducatigaz · 02-27-2020, 03:34 PM - **1 Like**

Originally posted by luftfluss

Stellar images, as usual.

It seems to me that the Sigma 800/5.6 renders busy backgrounds a bit more roughly than your Pentax 600/4 does. Do you feel the same way?

Yes it does. It's probably due to the distance these were taken at. The FA*600mm takes some beating.

**Canada_Rockies** · 02-27-2020, 04:34 PM

Originally posted by Pentaxians

How about Asian eagle

Barred Eagle Owl, taken at Sandakan RDC December 2019, with my Kp + DA300 + TC1.4

First time seeing that owl. Thanks for posting it.

02-25-2020, 10:46 AM - 4 Likes	#32927
mlt Site Supporter Join Date: Dec 2007 Posts: 1,159	*Sparrow with DA 300 and DA 1.4X AW extender on K-3** This combo is sharp enough

02-26-2020, 06:16 PM - 4 Likes	#32933
steamloco76 Loyal Site Supporter Join Date: Feb 2014 Location: Pennsylvania Photos: Gallery Posts: 2,710	A pair of mourning doves foraging in my neighbors yard. Tamron 55BB 500/8 Mirror lens on K5. The bokeh leaves a bit to be desired. Mirror lenses and busy backgrounds do not play well. Attached Images

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02-25-2020, 10:44 AM - 11 Likes	#32926
Ducatigaz Pentaxian Join Date: Feb 2010 Location: Blunsdon,Wiltshire, UK Posts: 1,505	K-5/Sigma 800mm F5.6 APO EX/Gitzo 5532LS

02-25-2020, 07:57 PM - 1 Like	#32928
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,451	I bought my Tammy 300 so I'd have the same as the 200 2.8 on my K-1. Then I discovered that the 1.4 for 420x 1.53 = 647mm (crop factor.) The trouble is, no matter what you do that 1.53 is good on any lens. The one exception being the Tamron 2x works pretty good on the K-1 but it's soft on the K-3. SO I can get to 647mm equivalent on the K-3 but 600mm on the K-1, and the K-1 will have better resolution. So despite crop factor, the K-1 and Tamron 300 2.8 and Tamorn 2x TC gives me more reach than any APS_c combo I own. Those are a few of the things you don't know if you don't own the gear. Tamron 300 2.8 and Tamron 2x TC for 600mm on the K-1 Really, not too shabby

02-26-2020, 12:07 AM - 1 Like	#32929
mroeder75 Site Supporter Join Date: Sep 2014 Location: Iowa Photos: Gallery Posts: 1,601	Originally posted by Ducatigaz K-5/Sigma 800mm F5.6 APO EX/Gitzo 5532LS I love this website. We have sparrows as big as predator owls. And owls in flight. What I can't do you all can do.

02-26-2020, 07:19 AM - 13 Likes	#32931
jacamar Loyal Site Supporter Join Date: Feb 2011 Location: Toronto Photos: Albums Posts: 3,443	A few more Costa Rica shots with the K-3, DA*300mm and 1.4x TC. Working with low light levels a lot of the time.

02-26-2020, 09:39 AM - 9 Likes	#32932
cooks333 Loyal Site Supporter Join Date: Mar 2019 Location: Phoenix, AZ Photos: Gallery \| Albums Posts: 509	B&W of the WWII and Lincoln Memorials from the base of the Washington Monument. K3 w/ DA*300mm.

02-27-2020, 03:48 AM - 20 Likes	#32934
Ducatigaz Pentaxian Join Date: Feb 2010 Location: Blunsdon,Wiltshire, UK Posts: 1,505	K-5/Sigma 800mm F5.6 APO EX/Gitzo 5532LS

02-27-2020, 05:11 AM - 14 Likes	#32935
Pentaxians Pentaxian Join Date: May 2011 Location: Singapore Photos: Gallery \| Albums Posts: 733	How about Asian eagle Barred Eagle Owl, taken at Sandakan RDC December 2019, with my Kp + DA300 + TC1.4

02-27-2020, 12:45 PM	#32936
Canada_Rockies Loyal Site Supporter Join Date: Nov 2007 Location: Sparwood, BC, Canada Photos: Gallery \| Albums Posts: 12,385	Originally posted by Pentaxians How about Asian eagle Barred Eagle Owl, taken at Sandakan RDC December 2019, with my Kp + DA300 + TC1.4 I love the owl in the last one shown. Beautiful

02-27-2020, 01:02 PM	#32937
cooks333 Loyal Site Supporter Join Date: Mar 2019 Location: Phoenix, AZ Photos: Gallery \| Albums Posts: 509	Originally posted by Canada_Rockies I love the owl in the last one shown. Beautiful Owls are on my personal shortlist of most photogenic creatures. Others include foxes, penguins, and giraffes. Love all the recent owl shots here!

02-27-2020, 03:05 PM - 1 Like	#32938
luftfluss Site Supporter Join Date: Jun 2011 Location: NJ Photos: Gallery \| Albums Posts: 11,628	Originally posted by Ducatigaz K-5/Sigma 800mm F5.6 APO EX/Gitzo 5532LS Stellar images, as usual. It seems to me that the Sigma 800/5.6 renders busy backgrounds a bit more roughly than your Pentax 600/4 does. Do you feel the same way?

02-27-2020, 03:34 PM - 1 Like	#32939
Ducatigaz Pentaxian Join Date: Feb 2010 Location: Blunsdon,Wiltshire, UK Posts: 1,505	Originally posted by luftfluss Stellar images, as usual. It seems to me that the Sigma 800/5.6 renders busy backgrounds a bit more roughly than your Pentax 600/4 does. Do you feel the same way? Yes it does. It's probably due to the distance these were taken at. The FA*600mm takes some beating.

02-27-2020, 04:34 PM	#32940
Canada_Rockies Loyal Site Supporter Join Date: Nov 2007 Location: Sparwood, BC, Canada Photos: Gallery \| Albums Posts: 12,385	Originally posted by Pentaxians How about Asian eagle Barred Eagle Owl, taken at Sandakan RDC December 2019, with my Kp + DA300 + TC1.4 First time seeing that owl. Thanks for posting it.

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