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: 28, showing: 1 – 20
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On article Swirly bokeh: Lensbaby announces Twist 60 lens (120 comments in total)

10 seconds in photoshop.

Link | Posted on Apr 12, 2016 at 14:02 UTC as 39th 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 42nd 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 52nd 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

RIP, DSLR.

Link | Posted on Aug 20, 2015 at 18:00 UTC as 178th comment | 3 replies

Loosing time and resources with another 25ish lens instead of concentrate in the huge hole of the system in good long lenses!!

I hope Panasonic does not kill the 100-400 as they did with the 150 2.8.

Link | Posted on Jul 16, 2015 at 12:30 UTC as 22nd comment | 1 reply

I completely agree, anyone using commercially should pay to the copyright holder.

But only if, at the same time, the copyright holder removes it immediately when someone does not like it. Since we are not free to avoid seeing a huge ugly construction right in front of our noses, the copyright holder should remove it from our views.

Link | Posted on Jul 4, 2015 at 17:37 UTC as 153rd comment | 3 replies

To be perfect, this should be "IPhone 6 only".

Link | Posted on May 3, 2015 at 22:15 UTC as 65th comment
On photo Product of the Fall in the Macro - Something Damaged or Broken challenge (12 comments in total)

This little guy had character!

Link | Posted on Mar 11, 2015 at 01:34 UTC as 7th comment
On article Olympus OM-D E-M1 Review (2081 comments in total)
In reply to:

Sumicron69: Ahhhhh looks like a nice camera but I will not be giving up my EM5 for this. It is still one of the finest cameras I have ever used.

I don't know you, but in the IQ DPR tests, I cannot tell the difference in noise and sharpness between the EM1 and EM5, or the GX7..... It's just me??

Something is telling me that, as always, DxO marks will show all these m43/43 cameras of the same generation have quite on par sensors.

Link | Posted on Sep 13, 2013 at 01:52 UTC
On article Olympus OM-D E-M1 Review (2081 comments in total)

I'd suggest to do the tests with a faster lens (75mm @ F1.8 or 50-200 @200 & F3.5), and/or at longer focal lengths, specially the second one.
Because just about EVERYTHING in the frames is essentially in focus (actually, I think the trunk behind the horse in #17 has better focus than the horse itself), so the test has no much useful information.
I would suggest also to disable NR, since it ruins sharpness judgement (the hair of the girl is an ugly mess).

Link | Posted on Sep 13, 2013 at 01:25 UTC as 347th comment | 1 reply
In reply to:

straylightrun: Big surprise. Next is Micro Four Thirds and eventually APS-C before FF becomes the standard in a few years.

I think that in "decades" you will probably have much better sensors that will make us laugh about our neat current FF sensors. FF would be too big then for almost any purpose. IMO, future is small and, of course, mirrorless.

Link | Posted on Aug 8, 2013 at 21:54 UTC
In reply to:

Maxfield_photo: Remember all those folks last year who said the sky was falling on the DLSR market, and it's name was mirrorless?

Nikon didn't make a mirrorless camera, but a compact camera with interchangeable lenses. Terrible idea.

Link | Posted on Aug 8, 2013 at 21:34 UTC
On article 3 smartphone apps for capturing time lapse video (20 comments in total)

It is actually a shame that not every single DSLR offers this as a default feature, not even modern flagships with video, and you have to shoot with a phone! For example, the Oly E5 doesn't have timelapse. Still, it is not very hard to make timelapses with it: http://luis.impa.br/photo/1204_varios/nuvens-cristo_timelapse_EV-2.0_JN-120407-E_21672-22915a.avi
But shooting several of these movies will ruin your shutter.

Link | Posted on Apr 15, 2013 at 20:42 UTC as 8th comment | 5 replies
On Article:4886827527 (250 comments in total)

The word "IPhone" appears 21 times in the first page of connect, while Samsung 6 times, and Nokia (that according to DPR has the best camera in any phone) only 3. Ipad appears 9 times....

Is this new site serious, or just and ad?

Posted on Oct 10, 2012 at 03:23 UTC as 69th comment | 1 reply
In reply to:

Raist3d: Hmm where is the price?

$1300 @B&H.

Link | Posted on Sep 17, 2012 at 17:37 UTC
Total: 28, showing: 1 – 20
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