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Forum: Pentax K-1 10-05-2017, 10:36 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Thanks for sharing some of that amazing historical engineering. As an (aerospace) structural engineer, I waxed lyrical for quite a while to a somewhat less excited spouse about the various structural features such as the rolling expansion joints and the cross bracing when examining the bridge in Rockville Utah. By the way, the local community is collecting money to save the Rockville bridge. The county apparently wants to replace it, but every shop in town is collecting funds.
Forum: Pentax K-1 09-22-2017, 07:44 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Inside Zion National Park, Utah, USA. K-1 with HD Pentax-D FA 15-30 f2.8 @15mm. The sharpness of this lens is amazing and I am a fan after less than two weeks of ownership.
Forum: Pentax K-1 09-21-2017, 07:31 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
The last surviving Parker through-truss bridge in Utah, over the Virgin River in Rockville, just south of Zion National Park. Built in 1924. K-1 with HD Pentax-D FA 28-105.
Forum: Pentax K-1 09-20-2017, 04:16 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
A little waterfall in the hills above Moab, Utah, USA, at sunset. K-1 with HD Pentax-D FA 15-30 f2.8 @ 15mm, hand-held, 1/15th, f11, -0.7EV.
Forum: Pentax K-1 09-18-2017, 01:08 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Overlooking Dead Horse Point on the Colorado River from Canyonlands National Park, Utah. K-1 with HD Pentax-D FA 15-30 f2.8.
Forum: Pentax K-1 09-15-2017, 08:07 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
The trail down to Indian Camp in Grand Canyon, Arizona. K-1 with HD Pentax-D FA 15-30 f2.8 @ 15mm.
Forum: Pentax K-1 07-08-2017, 02:12 AM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Australian Ringneck Parrot, Gundabooka National Park, near Bourke, New South Wales, June 2017. K-1 with Sigma 500 f4.5 APO DG EX and Sigma 1.4x TC.
Forum: Pentax K-1 07-07-2017, 03:57 AM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Mulga Parrots, Gundabooka National Park, near Bourke, New South Wales, June 2017. K-1 with Sigma 500 f4.5 APO DG EX and Sigma 1.4x TC.
Forum: Pentax K-1 07-05-2017, 01:35 AM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
A different kind of bird. Female Variegated Fairy-wren, Gum Flat, outside Moree, New South Wales, June 2017. K-1 with Sigma 500 f4.5 APO DG EX and Sigma 1.4x TC.
Forum: Pentax K-1 05-16-2017, 02:31 AM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Question 1: Not even noticeable with the Sigma 1.4x even wide open. I need to go out and try the 2x again as I haven't had it on my K-1.

Question 2: I am confident that the members of this esteemed forum would not dare rat out the great Rupert. Unless of course, there was money in it. Or just for kicks.
Forum: Pentax K-1 05-14-2017, 01:29 AM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
A pair of Rainbow Lorikeets in my back yard. Worth pointing out that this is another shot with the Sigma 500 f4.5 APO DG EX and Sigma 1.4x TC. Beautiful combination with excellent sharpness, no distortions, lots of wide open aperture and unbeatable reach.
Forum: Pentax K-1 05-14-2017, 01:26 AM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
It is clear from your description of her response that Mrs Rupert did not actually say no to such a purchase. So, in my humble and thankfully geographically distant opinion, you should consider that permission to proceed. The members of Pentax forums would no doubt endorse such a decision.
Forum: Pentax K-1 05-12-2017, 09:50 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
... and one of a Rainbow Lorikeet. K-1 with Sigma 500 f4.5 APO DG EX and Sigma 1.4x TC, Metz 58AF-2 flash in PTTLHSS mode at -1/3EV.
Forum: Pentax K-1 05-12-2017, 06:56 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
G'day Rupert - Thanks for your kind remarks. I rarely shoot at f4.5 with the Sigma 500 f4.5 APO DG EX because the depth of field at f4.5 is so small at the distances I am shooting at that the subject can extend outside the DOF. So, I usually shoot at f8 (like the two photos above). See the link below for a shot taken at f4.5 of a Lewin's Honeyeater to show that the lens is still magnificently sharp at this aperture (this shot also used the Sigma 1.4x TC). At f4.5,and with the TC, the lens still gets fine feather detail.

https://www.pentaxforums.com/forums/attachments/190-pentax-k-1/352323d149229...1-_am17833.jpg

I also attach a new shot of a Scaly-breasted Lorikeet (commonly called a "Greenie", don't know why. :lol: )taken in my back yard this morning with the same combination.
Forum: Pentax K-1 05-09-2017, 04:46 AM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Bird shots from the weekend taken with K-1, Sigma 500 f4.5 APO DG EX, and Sigma 1.4x TC. Male Golden Whistler and female Variegated Fairy-wren.
Forum: Pentax K-1 04-16-2017, 07:14 AM  
Widest to Longest with the K-1
Posted By AdrianM
Replies: 34
Views: 3,877
Great to see you here, Rickster. The version on your website has a lot more pizzazz. Looking forward to seeing what else you have in the locker.

cheers

Adrian
Forum: Pentax K-1 04-15-2017, 04:12 PM  
Widest to Longest with the K-1
Posted By AdrianM
Replies: 34
Views: 3,877
#17 in the Series: Sigma 500 f4.5 APO DG EX with Sigma 1.4x Teleconverter: This shot shows how delkightful the 500 f4.5 and the TC actuaslly are as this shot is wide open at f4.5. Even at this aperure, the combination gets fine feather detail. Photo is of a Lewin's Honeyeater in Ipswich, Queensland, Australia.
Forum: Pentax K-1 04-15-2017, 03:52 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Female Red-backed Fairy-wren. Ipswich, Queensland, Australia. K-1 with Sigma 500 f4.5 APO DG EX and Sigma 1.4x TC.
Forum: Pentax K-1 03-31-2017, 07:27 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Pattersonia occidentalis - a delightfully tiny native iris found in my back yard. K-1 with Sigma 180 f3.5 Macro



Forum: Pentax K-1 03-31-2017, 03:07 AM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Some shots of Red-backed Fairy-wrens from this afternoon. The male is not yet fully coloured - really unusual this late in the season. K-1 with Sigma 500 f4.5 APO DG EX and Sigma 1.4x TC EX DG.
Forum: Pentax K-1 03-29-2017, 11:38 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Three more shots from the Avalon air show in Australia in early March. A Royal Australian Air Force F/A-18F Super Hornet of 82 Wing, and USAF F16 and F22.
Forum: Pentax K-1 03-26-2017, 04:04 AM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Avalon air show, Victoria, Australia, March 2017. K-1 with Pentax D-FA 150-450: an excellent air show combination.
Forum: Pentax K-1 03-25-2017, 07:07 PM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
Brisbane City Hall. K-1 with Pentax D-FA 28-105. Supported on a wall and hand-held.
Forum: Pentax K-1 03-25-2017, 06:55 PM  
Widest to Longest with the K-1
Posted By AdrianM
Replies: 34
Views: 3,877
#16 in the series: Sigma 500 f4.5 APO DG EX: A fantastic long lens for the K-1. Beautifully sharp even wide open, but, like most long lenses, needs to be stopped down a bit just to get enough depth of field for subjects lke birds. This is one of my favourite subjects - a Laughing Kookaburra in my back yard. Unfortunately, I hear that its replacement a 500 f4 is not to be made in the Pentax mount. Better look after this one then!

Next in the series, I will add the 1.4x and 2x teleconverters from Sigma to the 500 f4.5.
Forum: Pentax K-1 03-14-2017, 05:15 AM  
Post your K-1 pictures!
Posted By AdrianM
Replies: 13,075
Views: 1,127,442
A USAF F-16 at the Avalon air show, March 2017. K-1 with Pentax D-FA 150-450 f4.5-5.6. I just love the sharpness and responsiveness of this combination.
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