Virvatulet

Virvatulet

Lives in Finland Finland
Joined on Jul 25, 2005

Comments

Total: 47, showing: 1 – 20
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In reply to:

T3: So whatever happened to all those yahoos who believed that the key to better high ISO performance was MORE pixels and HIGHER pixel density?

@ new boyz

Phantom Flex4K can do 1000 fps while D4 is 11 fps; speed is not the main factor here. The balance between different qualities is and Nikon obviously chose emphasis on high sensitivity.

Direct link | Posted on Apr 7, 2014 at 14:48 UTC
In reply to:

T3: So whatever happened to all those yahoos who believed that the key to better high ISO performance was MORE pixels and HIGHER pixel density?

@ Almeida
All things are never equal with practical sensor design; it's all about trade-offs and compromises poised by manufacturing process. Therefore e.g. Sony and Canon chose lower pixel density. Btw. RX10 has more pixels and also uses all of them for video, likely Sony had some room when making design decisions and went after maximal sensitivity.

Direct link | Posted on Apr 6, 2014 at 23:34 UTC
On Samsung explains the Galaxy S5's ISOCELL sensor post (48 comments in total)
In reply to:

ybizzle: Not bad but still ways to go. Funny the Nokia 808 was released in 2012. Two years later and no one has still managed to catch up...

@RKGoth
Good joke, but badly worn-out as such. That simply is not true to any extent, Nokia's design and HW have always been a strong point and Symbian Belle is very good in everything including user experience. Its worst shortcoming was to be two years late on market; the window of opportunity was already closing.

Direct link | Posted on Mar 15, 2014 at 23:04 UTC
On Stunning 360-degree view from One World Trade Center article (70 comments in total)
In reply to:

Vergilius: My heart was in my throat watching them climb that last segment! This was an imaginative and well-executed project. Congratulations!

Ok, if you liked that gut twisting feeling then you might also want to watch this one and enjoy the scenery...

http://www.youtube.com/watch?v=gLDYtH1RH-U

The second tallest building on sight is "only" half a kilometre high!

Direct link | Posted on Mar 11, 2014 at 00:46 UTC
On Canon shows off new PowerShot N100 'Story Camera' article (163 comments in total)
In reply to:

peevee1: N stands for "Narcissist".

LIKE is all we do in this fantastic world of controlled social media extravaganza, or was it actually virtual deep licking? This era will be remembered as the time of bloated psychological self-images amplified by social exhibitionism.

Direct link | Posted on Jan 6, 2014 at 23:33 UTC
On Canon shows off new PowerShot N100 'Story Camera' article (163 comments in total)
In reply to:

mpgxsvcd: Is this a joke?

I'm speechless, so have to make a quote:

Cazwell - No Selfie Control
http://www.youtube.com/watch?v=opHxCnQfa44

Direct link | Posted on Jan 6, 2014 at 16:52 UTC
On Hands-on with the Panono panoramic ball camera post (112 comments in total)
In reply to:

Sam Rohn: ricoh already has a one shot camera that produces 360°x180° full spherical panoramas available for sale since october 2013, the ricoh theta

https://theta360.com

overall, ricoh theta has better image quality than panono samples, panono seems to have very bad color rendition and an odd "honeycomb" vignetting pattern caused by the array of cheap lenses, theta is also smaller, lighter, and about half the panono's estimated price

@vv50
Take a full circle and cut it perfectly into two halves with a vertical line that goes thru the centre point. The circumference of each halves represents 180° angle measured from the centre point.

Now imagine taking one of the halves and attach it to a pencil from the both ends of the half circumference (arhc), the result would look something like a letter P.

Imagine taking the pencil into your hands and rotating it with your fingers trying to keep the pencil stationary. When you rotate the pencil half a turn the attached arch will go thru every point on a surface of a half sphere, when you make a full turn that is 360° it will form a perfect sphere.

Thus 360° × 180° is the correct expression for a perfect sphere.

Direct link | Posted on Dec 28, 2013 at 18:30 UTC
On Hands-on with the Panono panoramic ball camera post (112 comments in total)
In reply to:

Virvatulet: Could be an interesting niche product for special use. But only if it had some active means, like mass gyros, to stabilize its movement (especially rotational) during flight. And accelerometer optimizing algorithms to choose the right moment for shutter release for the required exposure time.

Without those I doubt this will have any impact whatsoever; could keep one parents' garage busy though...

Even though the object shape is a ball, I guess that we could agree that the effect of drag is quite insignificant at these velocities. However, factually the free flight deceleration will be more than |1| g and acceleration less than |1| g. For a near perfect timing those need to be accounted for, as would deviation of the gravity of Earth (possibly that can be deducted or reduced from the equations, don't know for sure as I have not fooled around with it).

Direct link | Posted on Dec 28, 2013 at 02:11 UTC
On Hands-on with the Panono panoramic ball camera post (112 comments in total)
In reply to:

Virvatulet: Could be an interesting niche product for special use. But only if it had some active means, like mass gyros, to stabilize its movement (especially rotational) during flight. And accelerometer optimizing algorithms to choose the right moment for shutter release for the required exposure time.

Without those I doubt this will have any impact whatsoever; could keep one parents' garage busy though...

The key is to recognise that the trajectory apex (stall instant) lasts only for an infinitesimal moment and that required exposure will take a lot longer than it even in bright conditions. Consequently some camera movement is unavoidable, vertical and rotational movements being the major factors in this particular case.

To all intents and purposes the flight path after reaching its top height will symmetrically reverse towards ground, therefore slightest absolute vertical camera movement occurs when exposure time is distributed evenly between leading and trailing sections i.e. before the apex is reached and after it has been reached. Thus optimal shutter release moment comes always before the apex (highest point, top height etc. – you name it) is reached.

Direct link | Posted on Dec 27, 2013 at 20:17 UTC
On Hands-on with the Panono panoramic ball camera post (112 comments in total)
In reply to:

Virvatulet: Could be an interesting niche product for special use. But only if it had some active means, like mass gyros, to stabilize its movement (especially rotational) during flight. And accelerometer optimizing algorithms to choose the right moment for shutter release for the required exposure time.

Without those I doubt this will have any impact whatsoever; could keep one parents' garage busy though...

@leno
Well, it says in the article “throw it in the air in which case the accelerometer triggers the camera at the highest point”, so interpreting it to the letter that would mean the shutter release moment is NOT optimised for minimal movement during exposure.

There might be inaccuracies in the description as is common with short popularised technical articles, but since that would be the least ambitious way of doing it and the product is foremost about marketing with buzzwords like Cloud…

The question is not indifferent by no means, for the virtually same amount of motion blur twice the exposure time (or half less motion blur with the same exposure time) is achievable by using advanced control scheme as I suggested. That 1 EV difference makes or breaks image quality for low light e.g. indoor photography.

Direct link | Posted on Dec 27, 2013 at 13:47 UTC
On Hands-on with the Panono panoramic ball camera post (112 comments in total)
In reply to:

Virvatulet: Could be an interesting niche product for special use. But only if it had some active means, like mass gyros, to stabilize its movement (especially rotational) during flight. And accelerometer optimizing algorithms to choose the right moment for shutter release for the required exposure time.

Without those I doubt this will have any impact whatsoever; could keep one parents' garage busy though...

Ok. That would mean that the shutter control algorithm determines autoexposure suitably before the ball flight trajectory reaches its end-height, and in order to minimise movement during exposure the shutter release moment is timed so that half of the exposure happens just before the stall moment (end-height) and the other half after it.

If they really have been this thorough and mathematically modelled the cam-ball flight feeding real-time accelerometer flight data to the mathematical model, and not simply determining when the stall moment has been reached for releasing the shutter, then I'm quite impressed indeed.

Direct link | Posted on Dec 26, 2013 at 21:41 UTC
On Hands-on with the Panono panoramic ball camera post (112 comments in total)

Could be an interesting niche product for special use. But only if it had some active means, like mass gyros, to stabilize its movement (especially rotational) during flight. And accelerometer optimizing algorithms to choose the right moment for shutter release for the required exposure time.

Without those I doubt this will have any impact whatsoever; could keep one parents' garage busy though...

Direct link | Posted on Dec 26, 2013 at 17:45 UTC as 37th comment | 11 replies
On Backstory of Phantom Flex4K video shot at 1,000 FPS article (91 comments in total)
In reply to:

Der Steppenwolf: Whole movie in slow motion really does look boring. Also "backdraft" means something totally else in firefighting so the title is misleading to say at least.
What backdraft means http://en.wikipedia.org/wiki/Backdraft

I respectfully disagree. In this piece of art the time stretch really works, but in order to be able to completely appreciate it, one has to watch the movie in real HD quality. The flick is filled with beautiful detail and rhythm unseeable to the naked eye.

Direct link | Posted on Dec 15, 2013 at 15:51 UTC
On Backstory of Phantom Flex4K video shot at 1,000 FPS article (91 comments in total)
In reply to:

racketman: 16GB a second, that's a thirsty camera.

Only if high SNR content (inversely proportional to high fps) is fed through inter frame and usually lossy compression. This camera system records RAW and most likely utilizes only light intra frame lossless compression.

Direct link | Posted on Dec 15, 2013 at 15:32 UTC
On Backstory of Phantom Flex4K video shot at 1,000 FPS article (91 comments in total)
In reply to:

Joe Ogiba: That video has been on Vimeo for eight months already.
https://vimeo.com/63490371

http://www.dpreview.com/news/2013/04/09/vision-research-posts-high-speed-4k-video-with-phantom-flex4k-at-1000fps

Direct link | Posted on Dec 15, 2013 at 15:17 UTC
In reply to:

Markol: As much as the 808 sucks as a smartphone (screen res., browser and apps), the camera is so good, I just love shooting random scenes with it.
The 1020 is no alternative at all.

If I may suggest, try Opera Mobile web browser, it's one of the best there is for any platform. Hope this helps to turn down suction...
http://store.ovi.com/content/20975

Direct link | Posted on Dec 7, 2013 at 13:27 UTC
On Classic photographs recreated in Lego article (123 comments in total)
In reply to:

inframan: It's a statement in itself about its readers that DPR felt compelled to identify each source photograph.

A wannabe elitist would be a person who feels the need to empower himself through looking down his nose at others; and fake that would be, because the higher intellectual and heart's sophistication comes with emancipation from such vulgar pettiness.

If you could have recognised all the photographical references without the notes then you can commend yourself for a good reason. The fact the notes are there for others who might not be so savvy in the art takes nothing away from you or me for that matter.

Anyhow, if your OP remark was stumbling, my response was not much better either. Fair enough?

Direct link | Posted on Nov 11, 2013 at 23:55 UTC
On Classic photographs recreated in Lego article (123 comments in total)
In reply to:

inframan: It's a statement in itself about its readers that DPR felt compelled to identify each source photograph.

And I salute them for making that prudent decision for us. There is no need to be a wannabe elitist fake.

Direct link | Posted on Nov 10, 2013 at 17:26 UTC
In reply to:

keeponkeepingon: While I like the 808 camera everything else about it is horrible.

Just doing a basic task can take me 5 times longer than on my iphone.

For example: Take a picture, resize it for email, enter contacts/enter a subject text then send.

OMG it is so slow on the 808. You can't specifiy a size in the email program so you have to enter the editor, resize, then save as a seperate file which takes 4evah. Then you go to send it but they give you 3 choices and the screen is so bad (or my fingers so big) 1/5th of the time it goes to SMS messaging, exit that, try again get into email, now your subject is like a 10 didget number, so you try to select and delete that, but the selection is wonky you finally give up and back space 10 or 20 times to delete the filename based nonsense subject enterr you contacts/text and "finally" hit send.

Sigh. End result is I rarely actually send pictures from the phone, which is sort of the whole point of having a camera in the dang phone.....

There really is not much that could be done to reduce the steps without stripping functionality and choice, or creating a very crowded GUI.

What comes to my mind is that in the step 3 the Edit function could be made directly available without need going into the menu and that steps 7 and 8 could be merged to allow directly choose from Send SMS, Send Email and Send Bluetooth.

I for a one always prefer more options and control over the whole process despite of possibly complicating things; but obviously there are other needs and views too, as is evident from the success of iPhone and the like.

Direct link | Posted on Oct 28, 2013 at 02:32 UTC
In reply to:

keeponkeepingon: While I like the 808 camera everything else about it is horrible.

Just doing a basic task can take me 5 times longer than on my iphone.

For example: Take a picture, resize it for email, enter contacts/enter a subject text then send.

OMG it is so slow on the 808. You can't specifiy a size in the email program so you have to enter the editor, resize, then save as a seperate file which takes 4evah. Then you go to send it but they give you 3 choices and the screen is so bad (or my fingers so big) 1/5th of the time it goes to SMS messaging, exit that, try again get into email, now your subject is like a 10 didget number, so you try to select and delete that, but the selection is wonky you finally give up and back space 10 or 20 times to delete the filename based nonsense subject enterr you contacts/text and "finally" hit send.

Sigh. End result is I rarely actually send pictures from the phone, which is sort of the whole point of having a camera in the dang phone.....

While I can not reject your experience; what I do is, step by step:

1. Activate camera function by pressing the shutter button, long press will also take the first shot immediately
2. Camera is ready to take a new picture, therefore tap gallery icon (a thumbnail of the image just taken)
3. Tap menu symbol and select Edit
4. Tap Sizing tools and select Resize (I usually also Crop and Autolevel before resizing)
5. Move finger across the screen “Flick” to dynamically resize, when ready tap OK symbol
6. Tap Save symbol (or Back arrow, not to be confused with undo/redo symbols, and from the requester select OK for saving the changed image)
7. Tap menu symbol and select Send
8. From the requester select Email
9. The Email Subject will be the name of the attached file by default; you can swipe over the subject field to select the text and directly replace it as you wish.
10. Write body text
11. From the To field tap contacts symbol, select the contact(s) of interest
12. Tap Send email symbol

Direct link | Posted on Oct 28, 2013 at 02:31 UTC
Total: 47, showing: 1 – 20
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