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Forum: Pentax K-70 11-19-2020, 05:32 PM  
Pentax K-70 photo samples
Posted By Tigs
Replies: 403
Views: 66,014
Very impressive
Forum: Post Your Photos! 05-26-2020, 11:49 AM  
Nature Reindeer in the wild in Scotland
Posted By Tigs
Replies: 7
Views: 684
Thank you. They were originally brought there from Sweden and have been roaming free (in the Cairngorms) since 1952.
Forum: Pentax K-70 04-28-2019, 08:38 AM  
Problems Focusing on Infinity with K-70
Posted By Tigs
Replies: 7
Views: 1,498
Focus at long distances with low light and smallish apertures can be tricky.
I tend to use live view AF for long distance shots of still subjects, for better focus accuracy.
Forum: Post Your Photos! 03-10-2019, 04:34 PM  
Nature Reindeer in the wild in Scotland
Posted By Tigs
Replies: 7
Views: 684
Thank you lesmore49! I am quite happy with this photo.

(I meant to add it to the "Nature" category, not "Abstract")
Forum: Lens Clubs 03-10-2019, 04:20 PM  
300mm plus Lens Club: discuss your long lenses
Posted By Tigs
Replies: 34,891
Views: 3,517,268
Reindeer in the wild in Scotland by Tiago Cardoso, on Flickr

Taken with Sigma 50-500mm f4.5-6.3 OS on a Pentax k-70

Forum: Lens Clubs 03-10-2019, 04:16 PM  
The Sigma Lens Club- All lenses
Posted By Tigs
Replies: 2,650
Views: 422,892
Sigma 50-500mm f4.5-6.3 OS

Reindeer in the wild in Scotland by Tiago Cardoso, on Flickr
Forum: Post Your Photos! 03-10-2019, 04:12 PM  
Nature Reindeer in the wild in Scotland
Posted By Tigs
Replies: 7
Views: 684
Forum: Pentax K-70 03-10-2019, 04:03 PM  
Pentax K-70 photo samples
Posted By Tigs
Replies: 403
Views: 66,014
Forum: Lens Clubs 01-28-2019, 11:30 AM  
300mm plus Lens Club: discuss your long lenses
Posted By Tigs
Replies: 34,891
Views: 3,517,268
Forum: Pentax K-70 01-28-2019, 11:27 AM  
Pentax K-70 photo samples
Posted By Tigs
Replies: 403
Views: 66,014
---------- Post added 01-28-19 at 11:28 AM ----------

Great Tit - London by Tiago Cardoso, on Flickr
Forum: Lens Clubs 01-20-2019, 03:13 PM  
300mm plus Lens Club: discuss your long lenses
Posted By Tigs
Replies: 34,891
Views: 3,517,268
Forum: Pentax K-70 01-20-2019, 03:09 PM  
Pentax K-70 photo samples
Posted By Tigs
Replies: 403
Views: 66,014
Buzzard in Richmond Park (London). Heavily cropped, original image was in Landscape format

Buzzard - Richmond Park by Tiago Cardoso, on Flickr
Forum: Pentax SLR Lens Discussion 01-20-2019, 03:06 PM  
The Bokeh Club
Posted By Tigs
Replies: 20,504
Views: 1,842,438
Forum: Pentax K-30 & K-50 01-05-2019, 06:39 AM  
Weird sensor shake during / just after exposure
Posted By Tigs
Replies: 6
Views: 1,435
Hi,


Yes, it happens with every way of triggering exposure that I have tried (haven't tried remote). I have also noticed it happens when flipping mirror up for sensor cleaning.

I've tried playing with dust removal settings and no luck.



On closer inspection of the problem one side of the sensor moves up and down in a repetitive pattern.
If anyone has ever heard of this problem please let me know.
Thanks
Forum: Pentax DSLR Discussion 01-04-2019, 09:18 AM  
Ibis vs OS on Sigma 50-500 and Pentax k-70
Posted By Tigs
Replies: 13
Views: 1,247
My conclusion is that at 500mm Sigma OS is significantly better at correcting camera shake than IBIS. With OS I am happy to use twice as slow exposures than IBIS.

A downside I feel is that OS is only active during a few seconds after clicking the focus button. Then you have to click again.

Thanks
Forum: Pentax K-30 & K-50 01-04-2019, 09:04 AM  
Weird sensor shake during / just after exposure
Posted By Tigs
Replies: 6
Views: 1,435
This started happening with a K-50, is it a common problem and is there a fix?

The sensor shakes strongly in a consistent pattern. I've tried firmware update, changing settings but still no fix.

Thanks
Forum: Post Your Photos! 01-03-2019, 10:09 AM  
Nature My favorite wildlife photos of 2018
Posted By Tigs
Replies: 6
Views: 621
Thanks for your comments. The photos resulted from a lot of luck and persistence. Still so much to improve to achieve consistently good results.
Forum: Post Your Photos! 01-03-2019, 02:52 AM  
Nature My favorite wildlife photos of 2018
Posted By Tigs
Replies: 6
Views: 621


Mouse by Tiago Cardoso, on Flickr



Mandarin Duck by Tiago Cardoso, on Flickr



Kestrel - Richmond Park by Tiago Cardoso, on Flickr




Swan by Tiago Cardoso, on Flickr
Forum: Pentax DSLR Discussion 11-19-2018, 07:54 AM  
Ibis vs OS on Sigma 50-500 and Pentax k-70
Posted By Tigs
Replies: 13
Views: 1,247
Thank you all.

Ill do some tests once I receive the lens lens this week, including how both systems compare on a monopod using typical shutter speeds.
Forum: Pentax DSLR Discussion 11-19-2018, 12:58 AM  
Ibis vs OS on Sigma 50-500 and Pentax k-70
Posted By Tigs
Replies: 13
Views: 1,247
I am about to receive a Bigma and would like to know about the effectiveness of the OS vs Ibis on the k-70, especially between 300 and 500mm FL.

Has anyone tested this on the k-70 or on a camera with the same ibis system?

Also, Is Pentax IBIS able to aid OS using the additional two axis stabilisation, the way some other camera systems do?
Forum: Pentax K-70 11-12-2018, 04:31 PM  
Pentax K-70 photo samples
Posted By Tigs
Replies: 403
Views: 66,014
Tokina 400mm f5.6 AT-X

Although it took that shot, it is actually an old and not so sharp lens. I have since sold it.

Thanks everyone for the nice comments!
Forum: Pentax K-70 11-06-2018, 04:59 PM  
K70 with monopod?
Posted By Tigs
Replies: 4
Views: 979
At slow shutter speeds, SR with monopod sounds like a good option, I have tested and compared the combination. Your mileage may vary.
Forum: Pentax SLR Lens Discussion 09-03-2018, 12:28 PM  
Tighten mount fit?
Posted By Tigs
Replies: 9
Views: 795
Thanks for the info!
Forum: Pentax K-1 09-01-2018, 02:42 PM  
How sharp the old SMC lenses are for the K1?
Posted By Tigs
Replies: 39
Views: 3,845
My understanding is that more pixels per unit area (typically APS-C) tend to amplify optical imperfections such as CA and softness. On the other hand there are full frame lenses that are significantly sharper on the center vs the corners so they work well on crop sensors (APS-C) displaying good sharpness (and less vignetting).
Forum: Pentax SLR Lens Discussion 09-01-2018, 02:04 PM  
Tighten mount fit?
Posted By Tigs
Replies: 9
Views: 795
I have a Tokina 400mm f5.6 ATX AF that sits a bit loose on the camera mount (rotates very slightly)
Is there a way to make it tighter when inserted?



Thanks
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