Ruy Penalva

Ruy Penalva

Lives in Brazil Lauro de Freitas Bahia, Brazil
Works as a Medical Doctor
Joined on Jun 28, 2010
About me:

Ruy Penalva de Faria Neto

Comments

Total: 170, showing: 41 – 60
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On article Bang for the Buck: Olympus OM-D E-M10 II Review (721 comments in total)
In reply to:

Ruy Penalva: Do we are in the XXI century? A 16 MP sensor sounds like a sub smart phone sensor. If it were only video dedicated may be but a mixed still and video sensor should have more pixels.

Please, psamleet, don't fancy me in. This is a free discussion and all opinion are valid, mine included.There are people who are satisfied with a 10 cm pen... but we just know that this length is very small for the majority of the women. So is sensor 14 MP.

Link | Posted on Aug 26, 2015 at 01:39 UTC
On article Bang for the Buck: Olympus OM-D E-M10 II Review (721 comments in total)
In reply to:

Ruy Penalva: Do we are in the XXI century? A 16 MP sensor sounds like a sub smart phone sensor. If it were only video dedicated may be but a mixed still and video sensor should have more pixels.

Nikon D4s is not a new release and it is mainly for photo-journalism. Here, the speed for sports and photo-journalism limits the sensor size. But remember: Canon next 1Dx will have 24 MP sensor. Regarding Sony A7S, its main reasonable application is video not still.

Link | Posted on Aug 25, 2015 at 21:37 UTC
On article Bang for the Buck: Olympus OM-D E-M10 II Review (721 comments in total)

Do we are in the XXI century? A 16 MP sensor sounds like a sub smart phone sensor. If it were only video dedicated may be but a mixed still and video sensor should have more pixels.

Link | Posted on Aug 25, 2015 at 18:02 UTC as 129th comment | 22 replies
On article Under the hood: A closer look at the Sony a7R II (600 comments in total)
In reply to:

Ruy Penalva: Keep on Canon/Nikon realm. Most predictable. More realistic. More ergonomic. More lens available. More design. More secret to be revealed. The game is only beginning. Sony disappeared in every field it tried to be a leader, from sound to TV screen passing by cell phone. Would it be successful in photography? How long it will endure the competition before having the tongue out of the mouth?

The problem is not of admiration in itself. I think Sony is great in sensor but can fail in camera. Samsung could overcome Sony hegemony in mirrorless cameras market. Only recently Canon has devoted attention to this market segment and we could see good news from them. Canon has already sold more than 100 million lens abroad and this a good market insertion when we think in ILC. The history shows Sony use to give up when commercial margins are narrow and a big competitor appear.

Link | Posted on Aug 20, 2015 at 03:25 UTC
On article Under the hood: A closer look at the Sony a7R II (600 comments in total)
In reply to:

Ruy Penalva: Keep on Canon/Nikon realm. Most predictable. More realistic. More ergonomic. More lens available. More design. More secret to be revealed. The game is only beginning. Sony disappeared in every field it tried to be a leader, from sound to TV screen passing by cell phone. Would it be successful in photography? How long it will endure the competition before having the tongue out of the mouth?

Xperia is not a commercial success.

Link | Posted on Aug 19, 2015 at 02:08 UTC
On article Under the hood: A closer look at the Sony a7R II (600 comments in total)

There are few exceptions indeed but in many others situations Sony lost the train of the history. When it comes so digital sensor it is also a world leader

Link | Posted on Aug 18, 2015 at 19:02 UTC as 41st comment
On article Under the hood: A closer look at the Sony a7R II (600 comments in total)
In reply to:

Ruy Penalva: Keep on Canon/Nikon realm. Most predictable. More realistic. More ergonomic. More lens available. More design. More secret to be revealed. The game is only beginning. Sony disappeared in every field it tried to be a leader, from sound to TV screen passing by cell phone. Would it be successful in photography? How long it will endure the competition before having the tongue out of the mouth?

There are few exception indeed but in many others situations Sony lost the train of the history. When it comes so digital sensor it is also a world leader

Link | Posted on Aug 18, 2015 at 18:59 UTC
On article Under the hood: A closer look at the Sony a7R II (600 comments in total)

Keep on Canon/Nikon realm. Most predictable. More realistic. More ergonomic. More lens available. More design. More secret to be revealed. The game is only beginning. Sony disappeared in every field it tried to be a leader, from sound to TV screen passing by cell phone. Would it be successful in photography? How long it will endure the competition before having the tongue out of the mouth?

Link | Posted on Aug 18, 2015 at 18:06 UTC as 43rd comment | 13 replies
On article #1 in France: Hands-on with DxO ONE (277 comments in total)

Why do we need another camera in a smart phone?

Link | Posted on Aug 12, 2015 at 02:20 UTC as 35th comment
In reply to:

Fri13: 1:1 reproduction ratio is the requirement for "Macro". But with this 15mm for 36x24mm sensor it would really require to be far more closer than 12cm from the front element, more like a 3-4cm maybe? But how if the front lens is already wider than the 36x24mm, how can you get it to be 1:1?

See the specification at the website:

Min. focusing distance
(Subject to Sensor) 12 cm (no 1:1 affirmed)

Min. working distance

(Subject to Front Element) 0.47 cm (1:1)

So, it seems clear, that 1:1 ratio only at 0.47 cm distance (where comes the light from?) from the front element, and the 12 cm minimum focusing distance refer to sensor plane. Sensor plane to camera front thread + lens length + 0.47cm = 12cm? Probably!

Link | Posted on Jun 24, 2015 at 23:16 UTC
On article Manfrotto launches miniature Lumie LED lights (49 comments in total)

Forget. Only for too close.

Link | Posted on Mar 27, 2015 at 02:23 UTC as 13th comment
On GalleryItem:3164195 (9 comments in total)
In reply to:

matthew saville: How is THIS an acceptable sample photo? It's completely out of focus! Are there any other 11mm f/4 shots that actually have useful corner sharpness sampling?

Out of focus???

Posted on Mar 19, 2015 at 17:11 UTC
In reply to:

Ruy Penalva: Forget both. Think on Canon 11-24 the Beast. But the price matter.

So do you think Canon went to 11mm wide without no need?!!! See its MTF done by Roger Cicala and change your concept. Soon Sigma will be there too. That lens quality aims at 50 MP sensor.

http://www.lensrentals.com/blog/2015/02/canon-11-24-f4-l-mtf-tests

Link | Posted on Mar 6, 2015 at 22:36 UTC
In reply to:

Ruy Penalva: Forget both. Think on Canon 11-24 the Beast. But the price matter.

To Panorama f/2.8 is not important. F/4 suffices indoor in wide angle in most situations.

Link | Posted on Mar 6, 2015 at 15:11 UTC

Forget both. Think on Canon 11-24 the Beast. But the price matter.

Link | Posted on Mar 6, 2015 at 03:22 UTC as 80th comment | 5 replies
On article Panasonic Lumix DMC-GH4 Review (490 comments in total)

I think, besides the poor lens inventory, it is not a camera for serious still shooters.

Link | Posted on Oct 17, 2014 at 01:45 UTC as 70th comment | 14 replies

I'm hoping for the impossible. Canon promised. Canon should make it possible.

Link | Posted on Oct 7, 2014 at 16:28 UTC as 394th comment

May be this new model can focus better than the old one. I had the old one and almost all of my shot (telephotos) were under-focused when 100% amplified.

Link | Posted on Sep 22, 2014 at 21:52 UTC as 112th comment | 2 replies
On article Sony unveils FE PZ 28-135mm F4 G OSS cinema lens (120 comments in total)

Astonishing 95mm frontal filter thread!!! Hood like a camcorder hood. A complete lens.

Link | Posted on Sep 13, 2014 at 00:48 UTC as 12th comment
On article Sony unveils FE PZ 28-135mm F4 G OSS cinema lens (120 comments in total)

That is a lens. Has the best of the World, and has AF and IS, besides having focus, zoom and aperture ring, Congratulations Sony! I forgot: Powered zoom.

Link | Posted on Sep 12, 2014 at 22:40 UTC as 13th comment
Total: 170, showing: 41 – 60
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