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Forum: Monthly Photo Contests 10-01-2018, 01:26 PM  
Alpine gold
Posted By aiki76
Replies: 10
Views: 350
I would like to nominate this photo
Forum: Photographic Industry and Professionals 09-24-2018, 10:26 PM  
Photokina 2018 Q&A - What would you ask Ricoh?
Posted By aiki76
Replies: 307
Views: 16,704
1) what is the finantial condition of Ricoh Imaging?

2) DSLR may be seen as an obsolete technology with declining market share: will Ricoh continue in this direction or mirrorless is the future also for Pentax?

3) any plan to develop in-camera focus stacking?

4) any plan to develop automated lens autofocus calibration?

5) any plan to revamp existing DA* lens with new AF?

6) are there planned lens for Q system?

7) any plan to develop a joint venture with other brands, like Leica, Panasonic and Sigma?

8) Pentax was famous for its compact and lightweight lenses, while the last introductions are bulky and heavy. Is it a consolidated trend?

9) when will we see new bodies and lenses?
Forum: Monthly Photo Contests 09-06-2018, 10:12 AM  
Alpine gold
Posted By aiki76
Replies: 10
Views: 350
Hi, may contribution to the monthly photo contest!
Bye
Forum: Pentax K-3 12-08-2017, 03:37 PM  
k3ii "mirror flap" when battery is low
Posted By aiki76
Replies: 16
Views: 3,715
I have this problem with my K3II, with non-original batteries only (by now), when they are close to the end of charge.
Forum: Pentax SLR Lens Discussion 12-01-2017, 08:32 AM  
DA*60-250, Sigma 100-300 f/4 and teleconverters
Posted By aiki76
Replies: 11
Views: 877
it is not a sistematic error, it's something random: sometimes it's precise, sometimes not, on subjects to the infinite
Forum: Pentax SLR Lens Discussion 12-01-2017, 08:22 AM  
DA*60-250, Sigma 100-300 f/4 and teleconverters
Posted By aiki76
Replies: 11
Views: 877
I noted a lack of AF precision with the Sigma, sometimes the focus is wrong, particularly with distant subjects, but it is not a problem of AF fine adjustment (it's ok)
Forum: Pentax SLR Lens Discussion 12-01-2017, 08:14 AM  
DA*60-250, Sigma 100-300 f/4 and teleconverters
Posted By aiki76
Replies: 11
Views: 877
Thanks to Uncle Vania and to you.
Your experience with both lenses is interesting for me: how does they compare in terms of optical performance, also without the TC?
Forum: Pentax SLR Lens Discussion 12-01-2017, 07:41 AM  
DA*60-250, Sigma 100-300 f/4 and teleconverters
Posted By aiki76
Replies: 11
Views: 877
Hi everybody,


I currently have a Sigma 100-300 f/4 and I'd like to ask to the other users what is their experience with this lens using the HD teleconverter: the performance of the couple (both optical and for the AF standpoint) justifyies the purchase of the TC?


How the Sigma compares with the DA*60-250 in terms of optical and AF performance, both with and without TC, based on your direct experience?


Thanks!
Michele
Forum: Pentax SLR Lens Discussion 11-05-2017, 06:40 AM  
Sigma Ex DG 70-200 f2.8 VS DA* 60-250mm f4 comparision
Posted By aiki76
Replies: 12
Views: 1,319
What about the AF? Thanks
Forum: Pentax SLR Lens Discussion 11-05-2017, 01:56 AM  
Sigma Ex DG 70-200 f2.8 VS DA* 60-250mm f4 comparision
Posted By aiki76
Replies: 12
Views: 1,319
likely It has been already discussed, so excuse me in advance, but what is the performance (both optically and from the AF side) of the 60 250 with the Pentax teleconverters (the new HD and the old F-AF 1.7x)?
And that of the Sigma? Thanks
Forum: Pentax News and Rumors 10-25-2017, 02:03 PM  
HD Pentax-DA★ 11-18mm f/2.8
Posted By aiki76
Replies: 474
Views: 63,334
The tamron lenses rebranded are identical to the original tamron lenses, in that case even the focal is different...
Forum: Monthly Photo Contests 09-17-2017, 09:44 PM  
Poll: Expired Contest Poll VOTE NOTE: August 2017 "Portrait" Contest Finalists
Posted By aiki76
Replies: 57
Views: 9,222
I vote for n. 7
Bye
Forum: Photographic Technique 05-15-2017, 01:01 AM  
Astrophotography settings K-1 with astrotracer
Posted By aiki76
Replies: 39
Views: 10,001
Correct. The problem is the loose of image quality at the borders of the frame, due to distortion and aberrations (particularly coma and astigmatism) of the wide angle lens.
Forum: General Photography 12-21-2016, 06:56 AM  
On Solstices and City Planning - Street Alignments for Phtography
Posted By aiki76
Replies: 5
Views: 895
Very interesting, thanks for sharing
Forum: Pentax SLR Lens Discussion 11-16-2016, 02:05 AM  
Samyang 10/2.8 or 14/2.8 for night landscapes?
Posted By aiki76
Replies: 5
Views: 809
Thanks to everybody for the clear answers
Forum: Pentax SLR Lens Discussion 11-15-2016, 02:14 AM  
Samyang 10/2.8 or 14/2.8 for night landscapes?
Posted By aiki76
Replies: 5
Views: 809
Hi everybody,
I would ask what lens you would prefer to shoot night/milky way landscapes with a K3II, choosing between the Samyang/Rokinon 10/2.8 and 14/2.8, based on your direct experience.
Thanks
Michele
:)
Forum: Pentax Full Frame 10-23-2016, 03:20 AM  
K-1 and Nikkor lenses
Posted By aiki76
Replies: 43
Views: 4,728
..or tha DA 560/5.6. Having a faster lens is always better, but the high ISO performance of the K1 (but also of the K3) is absolutely enough to get excellent results with a 5.6 lens. Also the 150-450 is reported as a very sharp lens, are you sure that the bad performance you experienced depends on the lens quality? And, before thinking to adapt a K1 to Nikon lens with the result to have a MF telephoto, I would explore other options, like getting a Pentax lens, like the FA 600/4 (if you find one). But the modern 5.6 lens should be largely to be preferred, in my opinion. Or, the last choice: get Nikon fast lens and a Nikon body. Good luck! :)
Forum: Pentax SLR Lens Discussion 09-05-2016, 11:04 AM  
Pentax 300mm lenses for Astrophotography
Posted By aiki76
Replies: 7
Views: 3,814
With the DA*300 I made this. In my experience, the DA*300 is a fantastic performer, even wide open, as the F* should be.


The galaxy of Andromeda by Michele Remonti, su Flickr
Forum: Pentax News and Rumors 08-05-2016, 12:35 AM  
Ricoh Financial results - FY2017/03
Posted By aiki76
Replies: 373
Views: 40,164
It seems a very good news
Forum: Pentax SLR Lens Discussion 08-02-2016, 10:22 PM  
GPS/Astrotracer versus faster lens recommendations
Posted By aiki76
Replies: 25
Views: 2,419
Thank you for your clear and very complete answer!
Forum: Pentax SLR Lens Discussion 08-02-2016, 02:46 PM  
GPS/Astrotracer versus faster lens recommendations
Posted By aiki76
Replies: 25
Views: 2,419
Hi, a question: in the shot with astrotracer on, an object in the background will be bigger than in the shot with the astrotracer off, because in the first shot the object will be slightly moved-stratched. How do you manage this point during the merging?
thanks
Forum: Pentax K-3 07-30-2016, 07:25 AM  
K-3 Camera bright lightroom profile
Posted By aiki76
Replies: 10
Views: 3,116
Hallo, how I can modify these camera profiles in order to use them with a K3II?
And how do I have to do to install them into Lightroom 4?
Thanks
Forum: Pentax K-1 07-19-2016, 10:48 AM  
K1 Crop Mode...Why You Should Love It!
Posted By aiki76
Replies: 56
Views: 15,689
Hi Rupert,
The crop mode of the K1 gives advantages in terms of high ISO performance over the K5, in your experience, or the noise at same ISO settings is comparable?
Thanks!
Forum: Monthly Photo Contests 06-08-2016, 02:14 AM  
Sewing Supplies
Posted By aiki76
Replies: 12
Views: 762
nominated
Forum: Monthly Photo Contests 06-02-2016, 02:29 PM  
A new nest
Posted By aiki76
Replies: 9
Views: 398
Here is my contribution for the contest "Reflection",
Thanks
Michele
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