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Forum: Monthly Photo Contests 04-04-2023, 04:35 AM  
Lindisfarne Boats
Posted By rodrigogalvao
Replies: 67
Views: 589
great photo!
Forum: Monthly Photo Contests 03-16-2023, 03:19 PM  
Bolivian flamingos
Posted By rodrigogalvao
Replies: 8
Views: 123
Flamingos at Red Lagoon near Salar of Uyuni, the biggest salt desert in the world
Forum: Pentax DSLR Discussion 02-01-2023, 10:53 AM  
Depth of field and sharpness with manual lenses
Posted By rodrigogalvao
Replies: 18
Views: 1,392
Yes, i´m thinking that this could be tha main point. I´ll post two pictures here to compare. Obviously, each one was taken under different conditions, different settings but with the same lens (a Pentax-A 28mm). The one at desert was taken with using hyperfocal distance and set to infinity; other had the focus set manually on subject with focus peaking.
Forum: Pentax DSLR Discussion 01-31-2023, 05:17 PM  
Depth of field and sharpness with manual lenses
Posted By rodrigogalvao
Replies: 18
Views: 1,392
Thanks for all your answers! I´ll some tests and compare the results, including the use of hyperfocal distance with lens set to infinity vs focus peak. There are some images that i recently took during a trip to Bolivia that seems not so good.
Forum: Pentax DSLR Discussion 01-30-2023, 06:38 PM  
Depth of field and sharpness with manual lenses
Posted By rodrigogalvao
Replies: 18
Views: 1,392
I basically use manual lenses on my cameras (a Pentax-A 28mm f2.8 and a Pentax-A 50mm f2 on a K5 or K30).

I wonder if anyone has ever compared the depth of field using the aperture ring on the lenses versus the digital aperture in camera - and if you noticed any difference in results, ever in depth of field or sharpness.
Forum: Post Your Photos! 09-05-2022, 05:32 PM  
21mm Photo Contest In peace
Posted By rodrigogalvao
Replies: 2
Views: 194
Thanks!
Forum: Monthly Photo Contests 07-07-2022, 01:30 PM  
Silo Stairs
Posted By rodrigogalvao
Replies: 77
Views: 544
Great composition and light!
Forum: Post Your Photos! 06-13-2022, 09:59 AM  
21mm Photo Contest In peace
Posted By rodrigogalvao
Replies: 2
Views: 194
This image was taken during the social isolation due to Covid 19. It was hard times, but with some moments of joy and love.
Forum: Post Your Photos! 06-04-2022, 08:17 AM  
21mm Photo Contest Just breathe
Posted By rodrigogalvao
Replies: 1
Views: 234
A litlle break of social distancing and self isolation during the COVID-19 epidemic
Forum: Monthly Photo Contests 06-02-2022, 01:37 PM  
Track to Shelly Beach
Posted By rodrigogalvao
Replies: 28
Views: 386
Great shot and nice colors!
Forum: Welcomes and Introductions 07-12-2020, 03:57 PM  
Greetings from Brasil
Posted By rodrigogalvao
Replies: 6
Views: 555
tks, folks!
Forum: Welcomes and Introductions 07-02-2020, 08:12 AM  
Greetings from Brasil
Posted By rodrigogalvao
Replies: 6
Views: 555
Hi. I´m a Pentax user based on Brasil, using this days a K20d and a Fuji Xe-1 with adapters (M42 - Pk on K20d and Pk-X on Fuji).

The pic above is from an commercial job, using the Xe-1 with a Takumar (Bayonet) 135mm f2.5.
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