Jose Ernesto Passos

Lives in Brazil Sao Paulo, Brazil
Works as a Consultant
Joined on Aug 19, 2009

Comments

Total: 31, showing: 1 – 20
« First‹ Previous12Next ›Last »
In reply to:

Einride: For those interested in air to air photography/cinematography: Did you see this?

https://vimeo.com/162088181/description

Aerial Filming took a giant leap forward when Swedish aerial specialist, Peter Degerfeldt at Blue Sky bluesky.se challenged Gyro-stabilized Systems in Grass Valley, US, to build a GSS 520 5 axis system that would produce rock solid images at a speed of more than 300 knots..
Blue Sky’s client, the Swedish company Saab Defence and Security, required high end motion and stills for their multirole fighter Gripen. gripen.com

Normally, all stabilization systems on the market are approved for helicopters, and thus a speed of maximum 125 to 135 knots.

Saab required at least 300 knots for their filming and stills projects.
GSS took on the challenge, and on a cold mid winter day, north of the arctic circle in Sweden, the Blue Sky team mounted the brand new GSS 520 on to the weapon station of a jetfighter.
Suspended in the Gyro was a Red Dragon 6K mounted with a Canon 30-300m lens.
We chose that particular lens as it provided the shortest snout.
No cables, between the Gyro and the cockpit, were used.
Aerial DP Peter Degerfeldt was flying in the backseat of the Saab 105, operating the Gyro via modem.
Picture was transmitted via the Paralinx Tomahawk HD inside the cockpit to a Atomos 7” recorder/monitor.
Despite the fact it was -20C (-4 F ) on ground and probably much colder in the air, everything went flawlessly.

I have never seen anything like it. That stabilisation is sick!

Great information!

Link | Posted on Jun 19, 2017 at 16:45 UTC

The complete cycle of innovation will come when the first lenses using the new technology in development by Harvard reach the market. (see metalens in dpreview June 7,2016 or the following https://www.dpreview.com/news/1219259020/new-glassless-metalens-is-100-000x-thinner-than-conventional-optics ). With this new technology mirrorless will be the technology of photography, all our lenses will be obsolete. The cell phones wiil be capable of a real zoom...

Link | Posted on May 30, 2017 at 07:19 UTC as 5th comment

Nikon and Canon could develop a new line of Full frame cameras mirrorless with a strategy similar to what Nikon is doing with new cards, The Nikon D5 is offered in two version one with two XQD and the second with two CF card slots. They could develop two versions of a new mirrorless Full Frame, one version compatible with the current lenses and another with a new type of mount that could be used for new lenses designed to optimize them for a mirrorless body. Is this possible as a solution?

Link | Posted on May 24, 2017 at 22:57 UTC as 26th comment | 12 replies
In reply to:

Jose Ernesto Passos: I have a question, what kind of design does Canon use in their movie cameras?
The C100, C300 are compatible with EF mount lenses.
These movie cameras could be used as a base for designing a mirrorless camera?

Please comment on this perspective.

I have no expertise in camera design, and the discussion on the article above did not mention the Canon movie cameras, for me they look like mirrorless cameras.
Canon has experience with these products. They could use to launch a new line of mirrorless, which could be less error prone.
My question is just a question to the author.

For example, I have a Sony a6300, which has been highly rated, but for me it is not a very reliable camera. It stops taking pictures, when the camera overheats. On the same environment and temperature my Canon DSLR never stopped working. The Sony is smaller but sometimes it just doesn't take pictures. I live in Brazil, and the Sony stopped working on a day at the club when the temperature was around 27 degrees Celsius, after more or less 100 pictures. With the Canon I took more than 400 pictures in 2 hours, and the temperature was around 32 degrees Celsius.

Link | Posted on May 24, 2017 at 02:11 UTC

I have a question, what kind of design does Canon use in their movie cameras?
The C100, C300 are compatible with EF mount lenses.
These movie cameras could be used as a base for designing a mirrorless camera?

Please comment on this perspective.

Link | Posted on May 24, 2017 at 01:31 UTC as 50th comment | 4 replies
On article Modern Mirrorless: Canon EOS M5 Review (1640 comments in total)
In reply to:

rsdofny: As I grow older, the appeal for me to carry a DSLR around is diminishing everyday. I am hoping that I can have a new camera body that is small so that I can carry a pancake lens with it for normal days or some bigger lens on special occasions. It appears that this camera is small enough for portability, but too small ergonomically to fit with a slightly bigger zoom lens that I already have. The Sony A6X00 has the right design in size and can fit an EVF in the body at the same time. Also, low light performance helps, but not 4K video.

Canon exec said that they wanted to dominate the mirrorless market, but their action did not support their claim.

I have a Sony A6300. It is a nice camera, but a major drawback, it stops taking pictures and gives a message of high temperature inside the camera! I got several times this type of situation, after taking around 100 pictures in under one hour.
I don't like a camera that makes you miss good pictures, because it freezes. I am planning to buy an M5 in my next trip to the USA.

Link | Posted on Apr 30, 2017 at 16:37 UTC
In reply to:

HosseinG: The exact same methodology and post processing could be done with 1DX, and then results should be compared.
In this scenario, add some moving car and you will never get the smooth red and yellow lines like DSLRs, you will get some broken line.
These techniques are developed based on some assumptions and work only if you use them in that situation, they will fail in general use.

I agree with you, and would like to complement that with the following information:
https://www.seas.harvard.edu/news/2017/02/flat-lens-opens-broad-world-of-color
This new lens technology being developed at harvard will impact the camera and photographic world in the future.

Link | Posted on Apr 26, 2017 at 23:12 UTC

I have a curiosity, what information is available about the health of Sony balance sheet? Sony has made big mistakes, each one impacted their balance sheet negatively, their loss of the TV market, their losses in the cell phone were not small (remember Sony Ericsson a joint venture gone sour).... Some months ago the news was that Sony strategy would be to be a provider of sensors to the industry in general. Were they successful in following this? (or Samsung is taking Sony marketshare in sensors for the cell phone market?) My view is that Sony is a company trying to find a new market, a new strategy after having lost many good market positions to Samsung and LG, and other competitors. The camera market is not big enough to bring financial health and stability to Sony.

Link | Posted on Apr 19, 2017 at 01:00 UTC as 9th comment | 3 replies
In reply to:

Peiasdf: I am not worried. Nikon will make a very good 3rd party OEM for E-mount. It has better flash lineup than Sigma as well.

Sony has lost money in key areas, like TVs, cellphones and other products, I hope they improve financially.

Link | Posted on Mar 14, 2017 at 02:11 UTC

Unfortunately the evolution of technology is changing the market for good. One major change is the celular with its cameras taking the market from point and shoot cameras, the other one will come from advances still on the lab, but coming in 5 years, like the new type of lens being developed at Harvard. Lenses will change too, so lets be prepared to receive another technology disruption on our way. Companies and consumers will have to adapt to this new environment. I still plan to buy the 105mm f1.4 in the near future... and an EOS M5 too...Lets keep taking pictures, that is the fun part!!!

Link | Posted on Feb 14, 2017 at 00:17 UTC as 143rd comment
On article Buying a second lens: what lens should I buy next? (296 comments in total)
In reply to:

vesa1tahti: I need a telephoto lens e.g. for bird photography. But can't make a decision: an APS (D7200) or a MFT (E-M10 II) lens. There are e.g. a couple of 150-600 mm APS-C lenses (Sigma, Tamron, etc.). For MFT, there is an excellent 300mm/4 prime lens. Zoom or not? Difficult.

Nikon with a Sigma 150-600mm lens will make your day. The cheaper version is also lighter and can be handheld. There is a review of this lens on YouTube that is very helpfull. The 4x zoom is very flexible on the field. Nikon focuses fast and sharp.
My opinion is based on my experience with this lens, I don't have an Olympus camera or lens, so I have nothing against it.

Link | Posted on Jan 16, 2017 at 06:14 UTC
In reply to:

Lee Jay: The math doesn't work.

“If they were to replace the batteries with these supercapacitors, you could charge your mobile phone in a few seconds and you wouldn’t need to charge it again for over a week,”

My cell phone battery holds 11Wh and lasts a day. I'd need 77Wh to last a week.

To charge a 77Wh capacity in "a few seconds" (I'll give them 5 seconds) would take 55.4kW of power, or 120V at 462 amps with 100% charge efficiency.

My main panel is 200A at 240V or 48kW so even all the power that can pass through my main breaker couldn't accomplish that charge rate.

Lee Jay you made a good point, let's say reality strikes back! Any way I think this type of research is in the right direction to a cleaner world.

Link | Posted on Nov 24, 2016 at 00:25 UTC

I hope that this new technology use abundant materials, so that it can be applied to fulfil the needs of all. Looks like it could be the way out of fossil fuels and resulting in a cleaner world. Great news!!!

Link | Posted on Nov 24, 2016 at 00:19 UTC as 39th comment | 5 replies
In reply to:

aussiejohns49: From what I have read so far, I can't get a new 13 inch MBP with i7 Quad processor to do Lightroom, Photoshop, InDesign and Premiere work on the road as fast as a PC competitor. With the new MBP I have to take up to 9 dongles to deal with real-world HDMI Data projectors, VGA Data projectors, USB Remote handset Kensington receivers, USB sticks, SD Cards, External monitors, Ethernet, USB Hard Drives, and a Lightning - USB C cord to charge my iPhone, and of course the power cord. Right now I have 3: Ethernet, VGA Adaptor and External monitor, plus Magsafe and integrated cord. All the rest is built-in. So for those 6 extra optional accessories (except they are mandatory during the next 3 year transition) I estimate (and am happy to be proved wrong by someone) that the cubic volume of the power cord and 3 cables of my existing 13 inch 2012 Retina MPB needs ~190cc's of space and 130g in weight, and the new one will take a whopping 650cc and ~260g in mass. Go figure? What were they thinking?

They were not thinking.

Link | Posted on Nov 6, 2016 at 13:13 UTC

The SD card is a common denominator today for many high end cameras, like Nikons and Canons. The problem is the next generation of cards has not the support of both Canon and Nikon, so what will be the next card? A card is necessary, because of several uses: back up, expanding easily the capacity of a camera, availability everywhere (the SD is popular in almost any market), transfer speed. It is like Apple did not analyse the trend adequately, it may not be a good idea to think that the SD Card is in the end of it's product life cycle. (1TB Card is on the way).

Link | Posted on Nov 6, 2016 at 13:06 UTC as 71st comment | 1 reply
In reply to:

Old Baldy: I see the only way that Apple gets out of this poor design decision, is to make a small, single, docking station that contains the missing ports. And sells it at cost.
In the mean time, I'm learning about WIn 10 Pro from youtube, to see how much better and more intuitive it is than the debacle of Win 8. Dell XPS 13" is likely my future.

You are right, it should design a dock station or ask Xiaomi to design one sleek solution to a bad design decision. I think Xiaomi will be up to the task!!! Getting a high quality and may be innovative add on to help Apple designers, who did not think very well what their users need.

Link | Posted on Nov 6, 2016 at 12:58 UTC

The Bozos are running Apple! Steve Jobs is having a nightmare!!

Link | Posted on Nov 5, 2016 at 18:39 UTC as 121st comment | 2 replies

It is very simple, Apple is normal, it makes mistakes. If you want to find real innovations let's look elsewhere. It is time to find a new hero.

Link | Posted on Nov 5, 2016 at 01:48 UTC as 109th comment | 1 reply

It is difficult to innovate, so sometimes a designer does something just to innovate.
The technology is not there yet, to remove the SD Card from the computer. The idea to plug an USB Card reader is very innovative, looks like one of Apple "Great Design Ideas"!!!

Link | Posted on Nov 3, 2016 at 23:28 UTC as 281st comment | 1 reply

I have a Sony A6300. I took several pictures with it with a Sony 18-200mm, this last weekend. I did not like the pictures I have taken. A few months ago, I took a Canon M3 to the same place. I used a 55mm to 200mm Canon Lens. The Canon focused faster, better and produced better pictures.
Two weeks ago I went to a local Club, the temperature was 25degrees Celsius, and I took some 200 pictures in one hour with my Sony A6300, then I got a message, that the camera was too hot, and it stopped taking pictures. The Canon M3 never produced a similar message, although I took pictures at 33 degrees Celsius on the beach here in Brazil.
I am disappointed because I bought the Sony A6300 due to the reviews and comments I have read here at DPReview. I should have waited for this new Canon M5.

Link | Posted on Sep 19, 2016 at 03:03 UTC as 141st comment | 5 replies
Total: 31, showing: 1 – 20
« First‹ Previous12Next ›Last »