Roman Korcek

Roman Korcek

Lives in Slovak Republic Slovak Republic
Joined on Dec 19, 2009

Comments

Total: 123, showing: 1 – 20
« First‹ Previous12345Next ›Last »
On Shutterdial offers Flickr searches based on EXIF article (20 comments in total)

"Flickr doesn't yet offer a way for users to search content based on camera settings"

Unfortunately, neither does Dpreview.

Direct link | Posted on May 16, 2015 at 01:42 UTC as 3rd comment | 1 reply
On Sources of noise part two: Electronic Noise article (229 comments in total)
In reply to:

Roman Korcek: "whether a camera gives better results by upping the ISO or by keeping the same exposure values, lowering the ISO and boosting the brightness selectively, later"

I am sorry, for the life of me I don't get it. What are the ISO Invariance tests? How do I find out if it's better for a given camera to shoot at ISO 3200 or at ISO 800 and boost +2 EV in PP?

Thanks to anyone who would enlighten me.

otto k
The ISO invariance test would then be what I am looking for, thanks!

Direct link | Posted on May 15, 2015 at 22:38 UTC
On Sources of noise part two: Electronic Noise article (229 comments in total)

"whether a camera gives better results by upping the ISO or by keeping the same exposure values, lowering the ISO and boosting the brightness selectively, later"

I am sorry, for the life of me I don't get it. What are the ISO Invariance tests? How do I find out if it's better for a given camera to shoot at ISO 3200 or at ISO 800 and boost +2 EV in PP?

Thanks to anyone who would enlighten me.

Direct link | Posted on May 14, 2015 at 11:15 UTC as 33rd comment | 2 replies
On Sony SLT-A77 II Review preview (499 comments in total)

Has "Center Lock-on AF" actually been tested?
It is a mode different from and incompatible with the standard "Lock-on AF" that needs to be enabled in the menu (Record menu, page 7) and upon pressing the joystick twice it locks onto whatever is in the center of the frame.

Also, what settings were used for "AF drive speed"? (N.b. that's a different setting from "AF Track Duration".)

Direct link | Posted on May 4, 2015 at 13:54 UTC as 16th comment
On Sony SLT-A77 II Review preview (499 comments in total)
In reply to:

Douglas F Watt: It's a shame that Sony inverted their parameter description on AF tracking to mislead almost everyone into believing that a setting of 5 would make for LEAST jumpy, when in fact it is MOST jumpy. So I have to wonder what the DPR would have said about the camera if the reviewers had had early access to Sony's own set of AF parameter recommendations available (but well hidden?) at: http://www.sony.net/Products/di/en-gb/Learnmore/4d_focus/a77/.

I also think that the JPEGs would fare significantly better if high ISO NR is set to low, and at this price point, it is probably the best all-around APS-C body.

Dan,
- What setting did you use for "AF drive speed"? (N.b. that's a different setting than "AF Track Duration".)
- Have you tested "Center Lock-on AF"? It is a mode different from and incompatible with "Lock-on AF" that needs to be enabled in the menu (Record menu, page 7) and upon pressing the joystick twice it locks onto whatever is in the center of the frame.

Direct link | Posted on May 3, 2015 at 23:39 UTC
In reply to:

tom1234567: I don't no why camera makers keep producing cameras with these
SMALL CRAPPY SENSORS

It's time the public were educated to what they are buying
Instead of being ripped off by ALL camera manufactures

So you yes?

Direct link | Posted on Apr 15, 2015 at 01:03 UTC
On Sony Alpha a7 II Review preview (807 comments in total)
In reply to:

Mike Sandman: Sony, if you're listening out there... fix the RAW compression issue via a firmware update and I'll place my order the next day.

I think the review is on target with its complaint. They say you're a "stone's throw" from being fully equal to a FF DSLR. You'll be a hair's breadth away with lossless RAW, or perhaps an option to save as an (uncompressed) DNG.

@Guidenet
"Why would you expect unusable photographs to be displayed in the internet?"
If people consider something a big issue they post examples to support their opinions. You can find lots of images illustrating the Fuji X10 white orb problem or the Nikon D600 dust / oil issue. Therefore I assume if the Sony RAW compression is a problem I can reasonably expect to find at least one example of where it is being demonstrated.

Direct link | Posted on Apr 6, 2015 at 10:40 UTC
In reply to:

halfmac: Was the video shot with the OM-D E-M5 MII?

@Looleylaylow
Huh? You actually dislike DPR staff interacting with the readership in the comments?

Direct link | Posted on Apr 5, 2015 at 18:29 UTC
On Sony Alpha a7 II Review preview (807 comments in total)
In reply to:

Mike Sandman: Sony, if you're listening out there... fix the RAW compression issue via a firmware update and I'll place my order the next day.

I think the review is on target with its complaint. They say you're a "stone's throw" from being fully equal to a FF DSLR. You'll be a hair's breadth away with lossless RAW, or perhaps an option to save as an (uncompressed) DNG.

@Mike Sandman
Can you please point me to one, just one photograph on the entire internet which was ruined or otherwise made unusable by the RAW compression? Thank you.

Direct link | Posted on Apr 5, 2015 at 00:42 UTC
In reply to:

nekrosoft13: interesting interview, but pathetic Canon point of view. they act like their the best in everything, nothing scares them, yet every company out there is making better gear then them.

@rrccad
Just like Nokia 10 years ago.

Direct link | Posted on Mar 10, 2015 at 22:49 UTC
In reply to:

Roman Korcek: "Canon offered a maximum pixel count of ~22MP for seven years before the launch of the EOS 5DS and 5DS R. Why did it take that long to increase resolution?

I wasn't actually aware that it had been seven years!"

This guy really cares about his company and its products.

@HFLM
I was not referring to the pixel count but to the lack of his knowledge about his company's flagship consumer product line.

Direct link | Posted on Mar 10, 2015 at 22:33 UTC

"Canon offered a maximum pixel count of ~22MP for seven years before the launch of the EOS 5DS and 5DS R. Why did it take that long to increase resolution?

I wasn't actually aware that it had been seven years!"

This guy really cares about his company and its products.

Direct link | Posted on Mar 10, 2015 at 16:50 UTC as 192nd comment | 6 replies
On Opinion: Canon EOS 750D and 760D article (318 comments in total)
In reply to:

mgrum: "Canon has never offered us two cameras with the same sensor and asked us to pay more for one, to get some extra features before"

That's pretty much all Canon have done for the past 6 years ;)

ozturert
Ah, I see, thanks for the clarification.

Direct link | Posted on Feb 16, 2015 at 21:23 UTC
On Opinion: Canon EOS 750D and 760D article (318 comments in total)
In reply to:

mgrum: "Canon has never offered us two cameras with the same sensor and asked us to pay more for one, to get some extra features before"

That's pretty much all Canon have done for the past 6 years ;)

Gosh, can we please just stop splitting hairs about the exact wording and agree on that we actually do understand what Damien wanted to say?
Canon has never introduced two directly competing DSLR camera models into the marketplace at the same time without one being a specialty camera (as in the astrophotography models) or in a higher / lower tier than the other one.

Direct link | Posted on Feb 16, 2015 at 16:59 UTC
On Opinion: Canon EOS 750D and 760D article (318 comments in total)
In reply to:

mgrum: "Canon has never offered us two cameras with the same sensor and asked us to pay more for one, to get some extra features before"

That's pretty much all Canon have done for the past 6 years ;)

ozturert
Huh? The A55 and the A77II certainly don't have the same sensor.

Direct link | Posted on Feb 16, 2015 at 15:58 UTC
In reply to:

prossi: An R&D guy that doubles as marketing manager?!!? I am loving Olympus more & more by the minute.
Definitely this one is low on the bs-ing and high on the doing. They need more of these at Canon.

prossi
http://www.dpreview.com/articles/5215097585/interview-canon-s-chuck-westfall-on-eos-5ds-and-5dsr

Direct link | Posted on Feb 14, 2015 at 20:05 UTC
In reply to:

Sammy Yousef: Terrible timing. Most who want to do astro are drooling over the innovation on the A7R of being able to see the Milky Way in real time at ISO 409,000.

Astrotripper
Is there any real life example where Sony RAW files caused some visible problems for the final image?
I have seen exactly one example showing a line of pixels having a different shade than they should have, brought to attention only by specialist software used to detect such things. In other words, pics or it didn't happen.

Direct link | Posted on Feb 10, 2015 at 11:44 UTC
In reply to:

Andreas Stuebs: So let's see ...

Weather sealed? - No
Pentaprism? - No (just pentamirror)
DR? - well sort of

Sorry, no option for me. At the given price you can get better.

Akpinxit
As long as you do not compare it to a Pentax, given the OP's parameters.

Direct link | Posted on Feb 7, 2015 at 22:24 UTC
On Olympus OM-D E-M5 II First Impressions Review preview (1392 comments in total)
In reply to:

Roman Korcek: It is really a pity that Olympus did not implement image stabilization with the 40 MPx mode. It should be quite easy from an algorithmic point of view.

Joesiv
Perhaps we are talking about different things? I am saying that if you can handhold (using image stabilization) one 1-second 16 MPx exposure still enough to have a sharp 16 MPx exposure, you can handhold eight 1/125s 16 MPx exposures still enough as well, regardless if they are combined into 40 MPx later on or not.

Direct link | Posted on Feb 5, 2015 at 19:33 UTC
On Olympus OM-D E-M5 II First Impressions Review preview (1392 comments in total)
In reply to:

Roman Korcek: It is really a pity that Olympus did not implement image stabilization with the 40 MPx mode. It should be quite easy from an algorithmic point of view.

Joesiv
Those 40 MPx are just eight 16 MPx images put together, so no, the stabilization is not any more complex per se. If you could handhold a 16 MPx one-second exposure using OM-D E-M5 II's image stabilization then you could also hand-hold the one second needed for the 40 MPx image.

Direct link | Posted on Feb 5, 2015 at 17:11 UTC
Total: 123, showing: 1 – 20
« First‹ Previous12345Next ›Last »