luisflorit

luisflorit

Lives in Brazil Rio de Janeiro, Brazil
Works as a Mathematician
Has a website at http://luis.impa.br/photo
Joined on Dec 28, 2006

Comments

Total: 41, showing: 1 – 20
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Nice!

Link | Posted on May 15, 2017 at 20:14 UTC as 3rd comment
On article This camera is designed to keep only the best photos (8 comments in total)

Depressing in several ways... or maybe it's April 1?

Link | Posted on May 9, 2017 at 20:36 UTC as 3rd comment
On article Ask the staff: electronic or optical viewfinder? (892 comments in total)

This is like the analog vs digital in the 90's. In the beginning, EVFs had some compromises (specially, lagging) that made some photographers prefer OVFs, like sport photographers.

Now, EVFs have virtually the same image quality as a real life OVF, no lag (at least none that our brain can detect), and many advantages: WYSIWYG (hence MUCH less exposure problems), histograms, levels, etc, etc. Easy choice now.

Link | Posted on Mar 12, 2017 at 17:17 UTC as 286th comment
On article Capturing the unseen: Sam Forencich's Invisible Oregon (46 comments in total)

Truly spectacular in every way. Congrats to the photographer!

Link | Posted on Mar 10, 2017 at 18:04 UTC as 34th comment | 1 reply

I can imagine the scene at the World Press Awards: An auditorium full of people well dressed, champagne, beautiful women in long sexy black dresses, everyone laughing, everyone congratulating the photographer enthusiastically, the winner also laughing loudly and proudly.... while the picture of the dead man with its assassin stands behind the crowd.

Link | Posted on Feb 15, 2017 at 01:41 UTC as 35th comment | 4 replies
In reply to:

luisflorit: Vignetting heaven...?

As bad as stacking of two filters is precisely what I thought, and what I am afraid of. Two filters usually vignette badly even on a 24mm equivalent focal length lens.

Link | Posted on Feb 8, 2017 at 03:01 UTC

Vignetting heaven...?

Link | Posted on Feb 8, 2017 at 00:36 UTC as 23rd comment | 5 replies
On article Hands-on with Ricoh's compact Pentax KP (634 comments in total)

Nice and ugly at the same time

Link | Posted on Jan 25, 2017 at 22:41 UTC as 194th comment

Since the landscape does not change much during each take, I am not sure that the timelapse actually adds much to the show. I think I would have preferred half a dozen or so pictures.

Link | Posted on Jan 25, 2017 at 11:06 UTC as 21st comment
On article Pulse: Extreme weather in black and white (56 comments in total)

Congrats to the photographer, spectacular!

Link | Posted on Jan 4, 2017 at 12:20 UTC as 30th comment | 1 reply
In reply to:

Matsu: It may not be relatively useful advice for brides - I'd ask instead to see a full wedding album from start to finish in addition to the usual collection of best images. However, it's not bad equipment advice for photographers.

The best bet for shooting weddings is to carry a kit close to what a PJ would use on assignment and between bodies, lenses and lighting with all-day or multi-day reliability, Nikon and Canon are still hard to beat on the balance of options, file quality, support and availability.

Could you use something else? Of course, depending on your experience, style, location and niche, some of those other options might even be better for what you do. But if you're advising a new wedding photographer, the big two are the safest real world recommendations.

" the big two are the safest real world recommendations" - that would like advising to buy a film Kodak in 2001: companies that insist on their dying old tech for fear of loosing customers. Mirrorless is the... present.

Link | Posted on Dec 28, 2016 at 20:19 UTC

Beautiful.... and it also shows how drones can disturb birds (at 1:16s).

Link | Posted on Aug 28, 2016 at 03:50 UTC as 21st comment | 4 replies

Micro$oft, once again the cancer of the computer world destroying Nokia.

Link | Posted on Aug 2, 2016 at 19:38 UTC as 24th comment | 6 replies
On article Swirly bokeh: Lensbaby announces Twist 60 lens (121 comments in total)

10 seconds in photoshop.

Link | Posted on Apr 12, 2016 at 14:02 UTC as 40th comment | 10 replies

So is Panasonic going to use old sensors until 2018, or will they call Sony???

Link | Posted on Dec 7, 2015 at 21:21 UTC as 43rd comment | 2 replies
On article PIX 2015: Robert Hurt and the hidden universe (58 comments in total)

Absolutely spectacular!!

Link | Posted on Nov 30, 2015 at 13:57 UTC as 8th comment
In reply to:

luisflorit: Why do I always see lots of artifacts in the blended (stacked) final results??
I've never seen a satisfactory HDR or panorama automatic implementation, always poorly blended. And the results here indicate to me that this focus stacking has the same problems (man face around the nose, and just everywhere in the church image). Manual blending or using dedicate software like Hugin always gives me MUCH better results, although with extra work of course.

You are right, but this is not the case with the nose of the old man. It is clearly a problem with the autoblending algorithm. You can fix manually that without any problem.

Link | Posted on Nov 27, 2015 at 19:03 UTC
In reply to:

luisflorit: Why do I always see lots of artifacts in the blended (stacked) final results??
I've never seen a satisfactory HDR or panorama automatic implementation, always poorly blended. And the results here indicate to me that this focus stacking has the same problems (man face around the nose, and just everywhere in the church image). Manual blending or using dedicate software like Hugin always gives me MUCH better results, although with extra work of course.

Look at the images at 100%. The bottom right of the man nose shows a big and obvious halo totally blurred with no detail. The church image shows the same problem in many regions. Typical problem of automatic blending.

Link | Posted on Nov 26, 2015 at 00:57 UTC

Why do I always see lots of artifacts in the blended (stacked) final results??
I've never seen a satisfactory HDR or panorama automatic implementation, always poorly blended. And the results here indicate to me that this focus stacking has the same problems (man face around the nose, and just everywhere in the church image). Manual blending or using dedicate software like Hugin always gives me MUCH better results, although with extra work of course.

Link | Posted on Nov 25, 2015 at 17:18 UTC as 53rd comment | 5 replies

If an UFO appears behind the Roman Coliseum.... I hope the camera is UFO prepared.

Link | Posted on Sep 10, 2015 at 20:16 UTC as 194th comment
Total: 41, showing: 1 – 20
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