Frank_BR

Lives in Brazil Campinas/SP, Brazil
Works as a Engineer
Joined on Jan 20, 2005

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Total: 456, showing: 1 – 20
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WARNING: Shooting Nikon is hazardous to your health!

Link | Posted on Aug 17, 2016 at 02:23 UTC as 48th comment
On article Bentley creates a 53 billion pixel car commercial (189 comments in total)

"The final image was made up of approximately. 700 hi-res images and ended up at 53 billion pixels in size."
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The Nikon D810 is a 36 Mpixel camera, so 700 images stitched together produce a final image of about 25, not 53 billion pixels! Some detail is missing in this story...

Link | Posted on Jul 21, 2016 at 22:02 UTC as 28th comment | 2 replies
On article Sony announces FE 50mm F1.4 ZA prime lens (293 comments in total)
In reply to:

Frank_BR: This emphasis of the lens manufacturers in launching extremely expensive lenses will end up killing the the market for photographic enthusiasts. As happened in the past with the market for high-fidelity audio.

Lens manufacturers urgently need to (re) learn how to make high-performance lenses but affordable to most enthusiasts. Otherwise, people will soon get tired of spending fortunes with photographic equipment.

Magnar W,
Probably $1500 for a fixed focal length lens is acceptable for a well-paid professional. However, it seems clear to me that Sony is charging too much for its most interesting lenses. Who will keep Sony alive is the enthusiast, not the professional. What Sony needs to do is to widen the market for full-frame cameras, not scare away the millions of enthusiasts who have experienced the taste of photography with Sony NEX cameras.

It's hard to accept that Sony charges $1500 for a 50mm F1.4 lens when a camera like the Sony RX-10 III, which is a complete photographic solution, costs the same amount. Before someone says I'm comparing apple to orange, I must say that the lens of the RX10 III is optically and mechanically much more complex, and probably more expensive to produce than this FE 50mm F1.4 ZA. And, of course, in addition to the lens, the RX10 III has a body which is extremely elaborate and expensive to produce.

Link | Posted on Jul 13, 2016 at 01:42 UTC
On article Sony announces FE 50mm F1.4 ZA prime lens (293 comments in total)

This emphasis of the lens manufacturers in launching extremely expensive lenses will end up killing the the market for photographic enthusiasts. As happened in the past with the market for high-fidelity audio.

Lens manufacturers urgently need to (re) learn how to make high-performance lenses but affordable to most enthusiasts. Otherwise, people will soon get tired of spending fortunes with photographic equipment.

Link | Posted on Jul 12, 2016 at 13:08 UTC as 7th comment | 8 replies

How "Mirrorless is the future" if there are tons of excellent mirrorless cameras for ALL formats in the market today? The future for mirrorless has arrived and it is bright. In contrast, it is hard to imagine what is the future of DSLR cameras. Of course Bengston would not say that the days of the DSLR concept are numbered because Hasselblad still produces DSLR cameras.

Link | Posted on Jun 27, 2016 at 15:46 UTC as 74th comment
On article Hands-on with Hasselblad X1D (810 comments in total)

Hasselblad X1D vs Pentax 645D
or
Mirrorless vs DSLR

http://camerasize.com/compare/#211,678

Shocking!

Link | Posted on Jun 23, 2016 at 02:11 UTC as 170th comment | 4 replies
On article Rare Nikon 1200mm F11 pops up on eBay (119 comments in total)
In reply to:

Marty4650: This looks like something you could put on your shoulder, and use to shoot down enemy planes...

Yes, if you try to use a lens like this in a public place, you run the risk of being struck by an anti-terror squad :-)

Link | Posted on Jun 23, 2016 at 00:18 UTC
On article Rare Nikon 1200mm F11 pops up on eBay (119 comments in total)

This lens is like the Egyptian pyramids: beautiful to admire, zero utility.

Link | Posted on Jun 22, 2016 at 22:22 UTC as 29th comment | 2 replies
On article Medium-format mirrorless: Hasselblad unveils X1D (1190 comments in total)

Great move, Hasselblad!
From now on, Canikon Jurassic Park is an island surrounded by mirrorless cameras on all sides, from smartphones to medium format.

Link | Posted on Jun 22, 2016 at 13:05 UTC as 310th comment | 5 replies
On article Hasselblad to announce 'game changer' next week (460 comments in total)

Maybe a mirrorless medium format camera with a square sensor?
How about reviving the old 6x6 format, Hasselblad?

Link | Posted on Jun 18, 2016 at 01:54 UTC as 147th comment | 1 reply
In reply to:

AksCT: Apple has announced the next generation of its smart phone, iPhone7M. This phone will not include any screen and will enable users to enjoy the phone at it is was originally intended to be. "With the exclusion of the ubiquitous LCD screen users must return to the principles of telephony. Exclusion of screen prevents chimping and other activities, which has nothing to do with the phone", said Apple's Head of Desperative Innovation.
Phone will include standard physical push buttons and only one ring tone. Users can choose any color they want to, as long as it is black.

You forgot to say the iPhone7M will go on sale in May with a price of $5995/£4650 :-)

Link | Posted on Apr 30, 2016 at 17:37 UTC

Let's be fair with Leica. The absurdity is not to sell a camera without LCD. The absurdity is to buy a camera without LCD.

Link | Posted on Apr 29, 2016 at 12:20 UTC as 136th comment | 4 replies

Another great article by Roger Cicala. The use of a linear motor for focusing a lens is conceptually logical. The challenge in practice is how to ensure that the focusing element moves but always remains exactly perpendicular to the lens axis. A fraction of a degree tilt is enough to cause decentering, so the longitudinal guides must be machined with very high precision. The use of just one linear motor is economical but creates an asymmetrical traction: there will always be the risk of a catastrophic locking of the focusing system if the clearances in the guides are too small, or tilting of the focusing element if the clearances are too large. The least worst solution is to use large clearances in the guides, but this ends up generating undesirable optical decentering. The use of two or more linear motors enables a much more symmetrical traction, even reducing the need for lubricant on the guides.

About the glue failure… well, that was work of amateurs!

Link | Posted on Apr 21, 2016 at 23:35 UTC as 6th comment
On article Student takes 2016 Zeiss Photography Award top prize (228 comments in total)

The winning photo has a lot of noise, chromatic aberration and poor definition. The opposite of what is expected from a picture taken with a Zeiss lens...

Definitely, you do not need a Zeiss lens to win a Zeiss Photography Award top prize. Now, the student will receive Zeiss lenses worth €15,000 and may never win another Zeiss prize. Who knows?

Link | Posted on Apr 13, 2016 at 02:08 UTC as 49th comment | 3 replies
On article Hands on with the Hasselblad H6D 50c/100c (267 comments in total)

"The top shutter speed for the new body is 1/1000 sec, but with the new HC lens range that decreases to 1/2000 sec..." (DPR)
---------------------------------------------------------------------------

When you go from 1/1000 sec to 1/2000 sec, the exposure time decreases but the shutter speed increases!

Link | Posted on Apr 12, 2016 at 13:34 UTC as 72nd comment | 3 replies
In reply to:

Frank_BR: Sorry, but the test seems flawed. I had the impression that D5 does not filter the RAW image, while other cameras provide a semi-cooked RAW with some filtering of noise. Under these conditions, it is expected that the RAW image from the D5 seems noisier than the other cameras.

> -complains about cooked RAWs
> -suggests repeating test with JPEGs

> O.O
---------------------------------------------------------------

Too complicated for simple minds, LOL.
JPG x JPEG would be a fairer comparison than RAWp x RAWf

Note:
RAWp = pure RAW
RAWf = filtered RAW

Link | Posted on Mar 29, 2016 at 11:11 UTC
In reply to:

Frank_BR: Sorry, but the test seems flawed. I had the impression that D5 does not filter the RAW image, while other cameras provide a semi-cooked RAW with some filtering of noise. Under these conditions, it is expected that the RAW image from the D5 seems noisier than the other cameras.

Well, if you process the D5 image with Neat Image, you will see that the noise intensity can be reduced practically to the level of the D750, but with negligible loss of definition. I have the impression that the D750 RAW is cooked, but the D5 RAW is not. I feel that the DPR test was poorly conducted. My suggestion is that they repeat the test with JPEG images.

Link | Posted on Mar 29, 2016 at 00:23 UTC
In reply to:

Frank_BR: Sorry, but the test seems flawed. I had the impression that D5 does not filter the RAW image, while other cameras provide a semi-cooked RAW with some filtering of noise. Under these conditions, it is expected that the RAW image from the D5 seems noisier than the other cameras.

> This is the same excuse canon fanboys have been using for years.
-------------------------------------------------------------
Canon fanboys? I don't know what you're talking about. I compared the Nikon D5 with the Nikon D750. I'm interested in cameras, not fanboys war.

Link | Posted on Mar 28, 2016 at 23:51 UTC

Sorry, but the test seems flawed. I had the impression that D5 does not filter the RAW image, while other cameras provide a semi-cooked RAW with some filtering of noise. Under these conditions, it is expected that the RAW image from the D5 seems noisier than the other cameras.

Link | Posted on Mar 28, 2016 at 23:06 UTC as 167th comment | 9 replies

The news is that Dracula, the Prince of Darkness, is having a great time with his Nikon D5. But he thinks that all sensitivities below ISO1,000,000 are useless for his purposes.

Link | Posted on Mar 28, 2016 at 18:52 UTC as 63rd comment
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