SimenO1

Joined on Oct 13, 2011

Comments

Total: 570, showing: 1 – 20
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In reply to:

ozturert: I think US agencies are concerned because they cannot monitor Huawei's phones as they do on others.

In a different recent story US embassy in Norway was revealed using blackmailing techniques to get the norwegian government to ban _legal_ medical companys because these threatened US medical industry. If Norway didnt cooperate, they would face serious consequences. Norway chosed not to close down healthy and _legal_ competition that would have made medicined more expensive. And some still believe US have a healthy free market that in the end gains its citicens.

More on that story: https://www.nytid.no/sa-usa-legemiddelindustrien/

I have a feeling these threats are made only because Huawei dont allow US to spy in people through Huawei phone backdoors. To me this signals that Huawei have integrity.

Link | Posted on Feb 14, 2018 at 20:17 UTC
In reply to:

Daniel Lauring: ummmm...yeah...$500 card reader.....right.

I'm glad I just need a card reader - not a self powered stackable multi super docking for 500$.

Link | Posted on Feb 7, 2018 at 08:43 UTC
On article How I built a large-format (8x10) video camera (221 comments in total)
In reply to:

harryh: What is happening here, is this a joke? What is the difference with a 50mm /f 1.2 with FF camera?

The 18x24 format uses a 300m as a standard lens. A 300mm /4.5 is 66mm opening full open. That translates in a 50mm /f:0.7 for full frame. The difference with depth of field difference with a 50mm 1.2 will be small.

The 18x24cm camera has unique sharpness en dynamic range IF you use film. With this setup you only have DR an sharpness from a FF camera.

vscd: "every lens regardless of format have its own imperfections, often called positive things" - like petval-like swirl (although I didn't see much of that effect in the Sinar 300/4,5)

Link | Posted on Feb 6, 2018 at 21:12 UTC
On article How I built a large-format (8x10) video camera (221 comments in total)
In reply to:

migus: Kudos for this camera with folded optical path!
Would be useful to post a few diagrams and drawings of the optical path and overall system.

However, one could argue that an LF camera intrinsically requires an 8x10" sensor - which could also be a (modified) liniar scanner ($50) from a flatbed. Slow and not for video, yet VERY high resolution for static subjects.

Another idea worth menioning is one I tried once. Covering my livingroom windows with aluminium foil, having a pinhole (2mm in my case), and setting the camera up close to the hole for a series of long exposures of my living room. I tried two variants of post processing:

1. flipping and stacking to get a full day sun trail image.
2. flipping and timelapsing it.

Link | Posted on Feb 6, 2018 at 21:04 UTC
On article How I built a large-format (8x10) video camera (221 comments in total)
In reply to:

migus: Kudos for this camera with folded optical path!
Would be useful to post a few diagrams and drawings of the optical path and overall system.

However, one could argue that an LF camera intrinsically requires an 8x10" sensor - which could also be a (modified) liniar scanner ($50) from a flatbed. Slow and not for video, yet VERY high resolution for static subjects.

I hope thats v2. I tried on that a few years ago but I gave up the programming. DR can be significantly improved by using very black materials inside, baffles and then taking two exposures for every line. I mean in theory - if you manage the programming.

Link | Posted on Feb 6, 2018 at 20:58 UTC
On article How I built a large-format (8x10) video camera (221 comments in total)
In reply to:

harryh: What is happening here, is this a joke? What is the difference with a 50mm /f 1.2 with FF camera?

The 18x24 format uses a 300m as a standard lens. A 300mm /4.5 is 66mm opening full open. That translates in a 50mm /f:0.7 for full frame. The difference with depth of field difference with a 50mm 1.2 will be small.

The 18x24cm camera has unique sharpness en dynamic range IF you use film. With this setup you only have DR an sharpness from a FF camera.

harryh: His 300mm f/4,5 om 8x10 equals a 43mm f/0,65 on full frame. Same DOF, same perspective, same tele compression, same FOV. The difference lies in the fact that you wont find a 43mm f/0,65 for full frame and that every lens regardless of format have its own imperfections, often called positive things. This lens has a lot of those.

Large frame still has some charm that can't be mimicked easily, and this is a charming home project. I'm just a but tossed up about the Einstein-explanations by some here. Its a fun and interessting DIY project, not a new relativity theory.

Link | Posted on Feb 6, 2018 at 20:38 UTC
On article How I built a large-format (8x10) video camera (221 comments in total)
In reply to:

SimenO1: At 18 I filmed projection screens at my local cinema. Some differences in equipment, but in principle the same. If the bar for beeing called genious is this low, well ..

Sdaniella: "Some differences in equipment, but in principle the same". No reason to make a point out of those differences.

Dheorl: So in your mind, smart = spell english right? English is only my third language.

Link | Posted on Feb 6, 2018 at 19:25 UTC
On article How I built a large-format (8x10) video camera (221 comments in total)

At 18 I filmed projection screens at my local cinema. Some differences in equipment, but in principle the same. If the bar for beeing called genious is this low, well ..

Link | Posted on Feb 6, 2018 at 17:35 UTC as 61st comment | 5 replies
On article A fully loaded iMac Pro will cost you $13,200 (572 comments in total)
In reply to:

darlot: I need the best computer to read all the bashing on dpreview. ;)

@Lan: Do you want a washing machine without a built in microwave oven and a Blu ray-player? Of course everybody would, exept some if there was an Apple logo on it. They would call it geniously Innovative and immidiatly pay 30% more then top of the line separate products. Then the blu ray drive breakes after a couple of years and they have to buy a new washing machine and mircrowave oven to replace it. You know, the components are glued together with cryptonite so they cant be repaired.

Link | Posted on Dec 15, 2017 at 23:51 UTC
On article A fully loaded iMac Pro will cost you $13,200 (572 comments in total)
In reply to:

panther fan: Please before somebody comments that 13.000$ is expensive:
Mobo with 10Gbit - 600$
Intel Xeon W -2600$
128GB ECC 2666-1500$
WX9100 Vega 64 16GB -1500$
4TB Pcie SSD -2500$
5K Display 10Bit -1500$
So we are already at 10300$ and some parts are still missing. Yes the computer is not cheap. But the markup is not insane

@ panther fan: It is not 30% profit, but 30% MORE profit then everybody else in the PC industry. Apple dont pay retail prices for the components.

Link | Posted on Dec 15, 2017 at 23:42 UTC
On article Canon patents 400mm F5.6 catadioptric 'mirror' lens (220 comments in total)
In reply to:

Tom Schum: I have a Samyang 300mm F6.3 catadioptric lens for my Fuji X-E1. It is very difficult to focus since depth of field is very thin, and needs to be used on a sturdy tripod. Also the lens vignettes strongly at the edges.
So Canon might have to include optical stabilization as well as autofocus. Has anyone heard of an optically stabilized catadioptric lens?

Yes, I have, sort of. Modern cameras with IBIS offer the stabilization, also with catadioptic lenses. Autofocus is a system with two main parts, the focus sensor (on or off image sensor) and the motors in the lens. In my case I have a semi-manual focusing stabilized catadioptic lens. The focus sensor is active, but the catadioptic lens lacks the focusing motor. However the focus sensor can withold the shutter until I manually get the subject in focus. At f/8 this works slightly unreliable, but its far better then fully manual focusing.

The mirror lens I use is a Tamron adaptall-2 SP 55B 500mm f/8. The first camera I did this with was a Pentax K-5 from 2010. Most Pentax cameras from then support the AF-delayed shutter function.

Link | Posted on Dec 15, 2017 at 21:27 UTC
On article A fully loaded iMac Pro will cost you $13,200 (572 comments in total)
In reply to:

darlot: I need the best computer to read all the bashing on dpreview. ;)

Then you have to look elsewhere :p

Link | Posted on Dec 14, 2017 at 22:30 UTC
In reply to:

Neez: It's hard to go for this in my NAS when MAMR and HAMR drives from WD and Seagate are right around the corner. We're talking 40TB drives.

It doesnt. They tactically price the same capasity drives just slightly lower then last year. The higher capasity drives a little more expensive then last years largest drive.

I bought 2x4TB 5 years ago. 4 TB is the same price now, but the largest capasities available have increased from 6 TB (at a then insane price) to 12 TB (at a now even more insane price). 8 TB have remained at the same price the last two years.

Link | Posted on Dec 12, 2017 at 21:38 UTC

Its been like this for many years. Roughly every third system camera sold is mirrorless. Its a stable situation with small changes caused by new models, seasons and so on.

Link | Posted on Dec 4, 2017 at 22:47 UTC as 22nd comment | 4 replies
In reply to:

racenviper: Can't wait for the hand held version.

My first thought. Todays phones offer only two cameras on each side. They should have an array of 16*9 or something on the back side, doing all the light field magic, 3D, HDR and polarization directions it could.

This dinosour-sized monster will soon be extinct.

Link | Posted on Nov 30, 2017 at 21:07 UTC
In reply to:

shoevarek: Trolltunga is really nice, moderate hike but rather congested. The spotty weather could actually be a blessing - shorter queue to make that photo at the end of the trolls tongue. Like most of wilderness photographs - the real story is outside of the frame.

More untrained people are getting into trouble there every year it gets more popular. They had more then a hundred rescue missions last summer. Tourists dont get the dangers of changing weather. A few have even fell down from the trolls tounge with an obvious tragic outcome.

Link | Posted on Nov 18, 2017 at 20:15 UTC
In reply to:

yslee1: So that's where all the NX Galaxys went.

Yes, both of them. I wonder if these cameras are some old leftovers, refurbished or newly made? If the latter, maybe NX isnt truly dead, just hibernating?

Link | Posted on Nov 18, 2017 at 14:17 UTC

Ok, you take some nice vacation photos. What is the motivation to return a rented camera that isnt in use, when the rent is free?

Link | Posted on Nov 18, 2017 at 14:15 UTC as 114th comment
In reply to:

zzzxtreme: the output looks good, unlike many other VR cams.

It looks softer then Ricoh Theta V to mee. Maybe even softer then the Theta S. And the video doesnt run good at all. Nice scenery though!

Link | Posted on Nov 16, 2017 at 22:14 UTC
On article Sigma's new 16mm F1.4 will cost $450, ships this month (359 comments in total)
In reply to:

digitallollygag: This has to be the bargain of the year

Great price, but I guess a 24mm f/2,0 for full frame dont nesecarily will be more expensive.

Link | Posted on Nov 11, 2017 at 13:42 UTC
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