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Forum: Pentax K-1 05-28-2019, 02:44 PM  
Problems with Pentax K-1
Posted By dagoban
Replies: 15
Views: 1,074
I know the guy too, he is for more than 30 years a pentax user and he has one the best pentax material collection in Europe.

About those problems with the k1 I haven't read anything similar in all the web, then, can we argue it is not a problem with firware?
Forum: General Photography 05-22-2019, 06:06 PM  
This Airport Made Fence Holes for Planespotting Photographers
Posted By dagoban
Replies: 16
Views: 972
Good initiative!. It would be nice to see something like that at race circuits.
Forum: Pentax K-5 05-21-2019, 05:14 PM  
Tamron 70-300mm vs Sigma
Posted By dagoban
Replies: 13
Views: 538
For pentax k5, the best option is the pentax 55-300, better than sigma and tamron 70-300 lenses. In contrast, for k1 in FF mode, the pentax 55-300 is not the best choice.
Forum: Photographic Technique 05-16-2019, 10:27 AM  
Action Pentax and aviation photography… or aviation photography and Pentax!
Posted By dagoban
Replies: 16
Views: 1,183
Thank you very much for your accurate and very valuable answers.

I the past, before the jump to the full frame format with the pentax k1, I considered a lot of options for sports, fauna, aviation,...one of them was the D810+nikkor 80-400. Finally I bought a pentax k1+sigma 50-500. Pentax DAF 150-450 was descarted because I needed lens shorter than 100 mm for sports in FF.

Now I'm looking for a single focus lens with high IQ and pentax DA 560 could be that lens (indeed there are no much more options).
Forum: Photographic Technique 05-15-2019, 04:16 PM  
Action Pentax and aviation photography… or aviation photography and Pentax!
Posted By dagoban
Replies: 16
Views: 1,183
Thank you very much for your answers.

Yes, you are true, the nikkor 80-400 did't like me very much, too expensive for its performance. What is your opinion about the cheaper nikkor 200-500 F5,6E ED VR in FX cameras?. I din't test it yet.

I'm looking for a DA 560 for sports, aviation and fauna, but previously I need to test its AF speed to be completely sure that it is the lens I need.
Forum: Photographic Technique 05-15-2019, 09:07 AM  
Action Pentax and aviation photography… or aviation photography and Pentax!
Posted By dagoban
Replies: 16
Views: 1,183
Excellent post.

Sometimes I do aviation photography, last time two weeks ago but I had to leave the k1+sigma 50-500 at home because of baggage limitation and I used an asp-c pentax+pentax 55-300, and I find all your explications are very interesting, mainly about the use of AF-C in K1.

I have some questions:

For aviation photography with pentax k1/k1 II:

1- Which is your favorite lens and why?
2- Which is the sharpest lens?
3- Which is the lens with fastest and more accurate focus? (sorry: this question has been answered previously, the pentax 150-450)

Thanks in advance
Forum: Lens Sample Photo Archive 05-10-2019, 08:55 AM  
Pentax FA 31mm f/1.8 AL Limited samples
Posted By dagoban
Replies: 145
Views: 73,908
Ok, I see it now, you are true, the article "los" is duplicated. It's only a mistake. Perhaps it has not been corrected yet after 150 years because some kind of historical circunstance.

The name of the garden is "Campo del Moro".
Forum: Lens Sample Photo Archive 05-09-2019, 05:34 PM  
Pentax FA 31mm f/1.8 AL Limited samples
Posted By dagoban
Replies: 145
Views: 73,908
"Paseo de los los civiles" is the name of one of the street of Madrid Royal Palace Gardens in Spain. I took the photo of the pinecone (the first photo of the serie) at the same gardens.
Forum: Pentax SLR Lens Discussion 05-01-2019, 07:03 PM  
Has anyone used the pentax DA 560 for sports in FF mode with the pentax k1?
Posted By dagoban
Replies: 20
Views: 1,210
It's a pity that there are no long teles sigma option for pentax as the new sigma 500 F4 or the cheaper sigma 150-600/60-600. Of course we never had the option of the sigmonster or the sigma 800, but in the past we were better with the sigma alternatives: bigma, 300 F2.8, 500 F4,5, etc. Nowadays the single option we have for pentax are the pentax DFA 150-450 and the DA 560. Do you know if pentax is designing a new replacementent for the veteran pentax 200-500 or a similar lens?
Forum: Lens Sample Photo Archive 05-01-2019, 06:29 PM  
Pentax HD D-FA 28-105mm f/3.5-5.6
Posted By dagoban
Replies: 26
Views: 4,105
Forum: Lens Sample Photo Archive 04-28-2019, 06:41 PM  
Pentax HD D-FA 28-105mm f/3.5-5.6
Posted By dagoban
Replies: 26
Views: 4,105
Forum: Lens Sample Photo Archive 04-28-2019, 04:46 PM  
Pentax FA 77mm f/1.8 Limited samples
Posted By dagoban
Replies: 252
Views: 99,839
My first day with combo k1+77 ltd. Aperture F1,8 for all these three photos:

Jardines de Monforte y Viveros (Valencia) (pentax 77 limited) (9) by dagoban, en Flickr

Jardines de Monforte y Viveros (Valencia) (pentax 77 limited) (3) by dagoban, en Flickr

Jardines de Monforte y Viveros (Valencia) (pentax 77 limited) (4) by dagoban, en Flickr

---------- Post added 04-29-19 at 02:00 AM ----------

Some street photos with pentax k1+77 ltd (At F1,8 all of them):

Paseo por Valencia (pentax 77 limited) (5) by dagoban, en Flickr

Paseo por Valencia (pentax 77 limited) (18) by dagoban, en Flickr

Paseo por Valencia (pentax 77 limited) (8) by dagoban, en Flickr
Forum: Pentax SLR Lens Discussion 04-28-2019, 02:46 PM  
Has anyone used the pentax DA 560 for sports in FF mode with the pentax k1?
Posted By dagoban
Replies: 20
Views: 1,210
Thank you very much guys for your fast answers!

Pentaxforums is an explendid forum!
Forum: Lens Sample Photo Archive 04-27-2019, 05:59 PM  
Pentax FA 31mm f/1.8 AL Limited samples
Posted By dagoban
Replies: 145
Views: 73,908
You're welcome nhs 1948, it's a pleasure. I wish you a fast and total recuperation of your surgery.
Forum: Pentax SLR Lens Discussion 04-27-2019, 05:49 PM  
Has anyone used the pentax DA 560 for sports in FF mode with the pentax k1?
Posted By dagoban
Replies: 20
Views: 1,210
Please, some more questions.

How do you transport the DA 560 lens?.
Is the original soft case strong enough to carry the lens without danger of damaging it?.
How do you travel by plane with the lens?.
Have you ever had any problem traveling with the lens in the cabin of airplanes due to airline restrictions?.

Thanks in advance
Forum: Pentax SLR Lens Discussion 04-26-2019, 06:24 PM  
Has anyone used the pentax DA 560 for sports in FF mode with the pentax k1?
Posted By dagoban
Replies: 20
Views: 1,210
Thank you very much for your answers. I'll look for a used DA 560 then!.
Forum: Lens Sample Photo Archive 04-26-2019, 05:07 PM  
Pentax FA 31mm f/1.8 AL Limited samples
Posted By dagoban
Replies: 145
Views: 73,908
Forum: Pentax SLR Lens Discussion 04-25-2019, 08:58 PM  
Has anyone used the pentax DA 560 for sports in FF mode with the pentax k1?
Posted By dagoban
Replies: 20
Views: 1,210
Thank you very much for your comments.

Redpit with all those amazing airplane samples has convinced me that the pentax DA 560 is the lens I need. I would like to test seriously one of them before before starting the purchase process. Fortunately prices have decreased a lot during last five years.

My second option is the sigma 500 f4,5, but it is not a weather sealed lens and its autofocus is not HSM, then I suppose that sigma 500 F4,5 autofocus is slow, isn't it?, ¿is the sigma autofocus slower than the pentax DA 560 autofocus?

I'll employe the DA 560 for air shows too. In the past I did them with the slow pentax 55-300 focus. Some examples:

Avión histórico (28) by dagoban, en Flickr

Avión histórico (23) by dagoban, en Flickr

Exhibición aérea FIO (158) (pentax 55-300) by dagoban, en Flickr

Exhibición aérea (3) by dagoban, en Flickr

Aviones históricos (23) by dagoban, en Flickr

Exhibición aérea FIO (163) (pentax 55-300) by dagoban, en Flickr

Exhibición aérea FIO (114) (pentax 55-300) by dagoban, en Flickr

Exhibición aérea FIO (80) (pentax 55-300) by dagoban, en Flickr

Avión histórico (27) by dagoban, en Flickr

Avión histórico (20) by dagoban, en Flickr


But sometimes the pentax 55-300 is not the best lens for that, 300 mm is not enough:

Cielo de Madrid_Día de la Hispanidad_pentax 55-300 (1) by dagoban, en Flickr

Cielo de Madrid_Día de la Hispanidad_pentax 55-300 (3b) by dagoban, en Flickr

Cielo de Madrid_Día de la Hispanidad_pentax 55-300 (11) by dagoban, en Flickr


Thank you very much guys!
Forum: Pentax SLR Lens Discussion 04-24-2019, 06:56 PM  
Has anyone used the pentax DA 560 for sports in FF mode with the pentax k1?
Posted By dagoban
Replies: 20
Views: 1,210
I use the sigma 50-500 OS HSM with k1 (always FF mode) for sports but I need a faster 500-600 mm weather resistant lens, and I have some questions about the pentax DA 560:

It is a very sharp lens, sometimes with aberrations at wide open, but:

- ¿Is the DA 560 a 100% usable FF lens?. According to http://www.ricoh-imaging.co.jp/english/support/pdf/pentax_acc.pdf and DA 560mm F5.6 - is it a Full-frame lens? - Articles and Tips | PentaxForums.com , the DA 560 is a aps-c lens, but in Full Frame Coverage of DA Lenses: Comprehensive Test - Gear Guides | PentaxForums.com it is considered as a lens with perfect full-frame compatibility.

I found this photo taken with DA 560 at F5,6 and it does not look a full FF lens:



then, ¿is the DA 560 100% FF or not?

- ¿What about the autofocus? ¿is it fast and precise as the sigma HSM autofocus?. I took these photos with the combo pentax k1 + sigma 50-500,

Racing Legends 2019 Circuito Ricardo Tormo-Valencia (416) by dagoban, en Flickr

Podium VC Comunidad Valenciana 2019 (sigma 50-500) (2) by dagoban, en Flickr

Ferrari Challenge 2019 Ricardo Tormo (Valencia) (671) by dagoban, en Flickr

Ferrari Challenge 2019 Ricardo Tormo (Valencia) (581) by dagoban, en Flickr

Racing Legends 2019 Circuito Ricardo Tormo-Valencia (36) by dagoban, en Flickr

Racing Legends 2019 Circuito Ricardo Tormo-Valencia (435) by dagoban, en Flickr

Racing Legends 2019 Circuito Ricardo Tormo-Valencia (138) by dagoban, en Flickr

Ferrari Challenge 2019 Ricardo Tormo (Valencia) (29) by dagoban, en Flickr

Ferrari Challenge 2019 Ricardo Tormo (Valencia) (479) by dagoban, en Flickr

Ferrari Challenge 2019 Ricardo Tormo (Valencia) (642) by dagoban, en Flickr

Ferrari Challenge 2019 Ricardo Tormo (Valencia) (645) by dagoban, en Flickr

Racing Legends 2019 Circuito Ricardo Tormo-Valencia (423) by dagoban, en Flickr

Racing Legends 2019 Circuito Ricardo Tormo-Valencia (444) by dagoban, en Flickr

but I need a faster and weather sealed lens for cloudy and rainy days. Some days I have to work with ISO 6400 because the sigma 50-500 is not very sharp at wide open.

Many thanks in advance
Forum: Winners' Showcase 04-02-2019, 06:59 PM  
March, 2019 Third Place: Autumnal Mists
Posted By dagoban
Replies: 45
Views: 999
I would like to nominate this photo
Forum: Monthly Photo Contests 04-02-2019, 06:58 PM  
Balanced Rock, Arches Nat'l Park, Utah
Posted By dagoban
Replies: 10
Views: 128
I would like to nominate this photo
Forum: Monthly Photo Contests 04-02-2019, 06:58 PM  
Sugar town Tweed Valley (Australia)
Posted By dagoban
Replies: 6
Views: 117
I would like to nominate this photo
Forum: Monthly Photo Contests 04-02-2019, 06:58 PM  
Bell Gorge
Posted By dagoban
Replies: 30
Views: 430
I would like to nominate this photo
Forum: Monthly Photo Contests 04-02-2019, 06:57 PM  
Floating
Posted By dagoban
Replies: 13
Views: 151
I would like to nominate this photo
Forum: Monthly Photo Contests 04-02-2019, 06:48 PM  
Thuringian Forest
Posted By dagoban
Replies: 1
Views: 162
I would like to nominate this photo
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