mikiev

mikiev

Lives in United States OR, United States
Joined on Jul 20, 2005
About me:

Currently have: Nikon D50, Nikon 18-70 DX, Nikon 70-300 ED, Sigma 10-20 HSM, Nikon 105 AFS VR Macro, Nikon 24-120 AFS VR, Tamron 200-500, and Nikon SB-600.
Next purchase will be body-upgrade... probably to D80, maybe D200.

Comments

Total: 66, showing: 1 – 20
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In reply to:

PhilTate: I know very little about optics, but it seems that eventually the image will wind up on a flat surface, either as a print or on a computer screen. Won’t it take some doing to get the curved image flattened?

No, it won't take any doing.

A lens takes a flat image - like the ones people take of brick walls to check for distortion - and produce a curved image... which additional lens elements/groups are added to the lens to flatten the image onto the flat sensor.

And those extra elements/groups have varying amount of success at correcting for distortion - which is why software in the camera, or post-processing software like Lightroom, DxO, etc are used to help flatten the image.

Having a sensor with curvature, which matches the curvature which is unavoidably introduced by the lens, automatically corrects - or "cancels out" - the curvature and gives a flattened image with no other processing required.

The same way the curve of the retina in your eye cancels the image-curvature produced by the lens in your eye.

And - just like your eye - there is no ability to zoom in such a system.

Direct link | Posted on Jun 18, 2014 at 04:12 UTC
In reply to:

mailman88: Ok....answer this question, is it cheaper to make of more expensive?

1. Extra steps in production = more chances to fail QA = more expensive

2. Barely past prototype stage = no economies of scale = more expensive.

3. Only usable in fixed-lens cameras = niche market = no economies of scale = more expensive.

Direct link | Posted on Jun 18, 2014 at 03:54 UTC
In reply to:

Clyde Thomas: Contax and Rollie both produced exotic vacuum back cameras to keep the film perfectly flat. Precision German engineering made a really big deal about that back when.

Is Sony throwing us a curve or shooting straight here?

Shooting straight. [I see what you did there]

Film needed to be flat, because any sections of the negative flat against the backing-plate would be out-of-focus = ruining your pictures - in arbitrary ways - and you had no way of knowing until the film was developed.

Direct link | Posted on Jun 18, 2014 at 03:47 UTC

At least one company is innovating in the cellphone market!

I don't see Apple or Samsung giving us the selfie panorama mode. :)

Direct link | Posted on May 8, 2014 at 01:06 UTC as 3rd comment
In reply to:

Mapel: This is very interesting... and that tree is really huge!

"Everyone wore hats and jackets..."

Reminds me of seeing a motion picture made in San Francisco in the early 1900's. Camera was mounted on one of the streetcars - on level ground, not the hills - and showed all the people on the street staring at the camera as it passed-by.

And every single one of them - man, woman, child - had a hat on.

I don't think I would have noticed if the person posting the video hadn't asked viewers to try and spot anyone without a hat on. :)

Direct link | Posted on May 5, 2014 at 17:44 UTC
On Blackmagic Design launches Blackmagic Studio Camera article (23 comments in total)
In reply to:

InTheMist: Can someone explain to me what it is?

Its a 4k video camera attached to a LCD-screen - "viewfinder" - which is about the size of an iPad.

Since most "Pro" video rigs use a larger screen connected via cables, and supported via brackets & whatnot... these guys just decided to mount the bigger screen directly to the back of the camera.

Its called a "studio" camera, because they expect it to be tripod-mounted in a video studio... and this design eliminates the extra bric-a-brac needed to connect & support the bigger screens people would be buying separately.

It just doesn't help people who already have larger LCD-screens for use with video cameras. :)

EDIT2: a recent example of the complexity of attching/supporting bigger screens & boom microphones with smaller video cameras:
http://www.dpreview.com/files/news/5952269437/VCT-55LH_XLR-K1M_CLM-V55_right_ILCE-7S_VX9124-1200.jpg

Direct link | Posted on Apr 8, 2014 at 15:33 UTC
On Shockproof flagship: Olympus 'drops' new Tough TG-3 article (107 comments in total)
In reply to:

Peiasdf: So how much is 100 kgf consider it is not a SI unit. 100G?

I just assumed it was similar to lbf, i.e.
lbf = pounds force
lbm = pounds mass
kgf = kilograms force ???

... kg/cm2 x cm2 [camera surface-area] = kgf [total force/pressure applied to the camera]

kgf/cm2 = kg/cm2

Dimensions given as 112mm x 66mm = 11.2cm x 6.6cm = 73.9cm2

100kgf/73.9cm2 = 1.35kg/cm2

Direct link | Posted on Mar 31, 2014 at 17:56 UTC

It seems like the display would have to be pretty dim, in order to be transparent enough to maintain eye-contact between photographer & subject... and pretty-much a one-trick pony if that is the only use-case such a large display is good for.

Direct link | Posted on Mar 20, 2014 at 21:33 UTC as 21st comment
On Miggo Strap and Grip review article (85 comments in total)

Too bad the Sling has that "try to accomodate all cameras = all cameras get lousy handling" mounting-plate.

EDIT From the photo, it looks like the camera would be better-off mounted further-back on the mount - where it shows shorter-lens camera should go... but even then, the neoprene might have enough "give" to still let the camera tilt-down enough for the lens to contact the wearer's belt-buckle. END EDIT.

Grip does seem a better design, since it is not trying to fit wide range of camera sizes.

Direct link | Posted on Feb 18, 2014 at 19:38 UTC as 65th comment
On Integrating the MacBook Air into a pro workflow article (353 comments in total)
In reply to:

gonzalu: To all the haters... it isn't always about price. There is something about real world experience that trumps what you "read" or what a pricetag says.

A comparably speced WinTel machine will be around the same price. I live with both MacBook Air (latest model 13") and a Windows 8.1 Surface Pro 2 and believe me, the MacBook is better overall.

And I am the biggest Windows fan there is... my main desktop / edit workstation is a HP Z620 with Quadro graphics, 92GB RAM, SSD RAID0 dual Xeon 6 cores etc. etc.

The MacBook Air has to be lived with to appreciate it. Nothing to do with Advertising for Apple or Apple Tax or Ecosystem Tax. Don't let your wallet dictate.

Everything is built in without having to think about it..

USB3
Thunderbolt
DisplayPort
802.11n/a/b/g
SD
Backlit Keyboard
Properly Sized and Spaced Keys
Properly Sized and Working Trackpad

My External drives are WD USB3 Passports. I use Lightroom 5, Photoshop CS6, Cinema 4D, Adobe After Effects, Adobe Premiere Pro, etc.

@Jogger: My 24" iMac had the video card die at the 2.5-year mark - just before the 3-year Applecare expired - and Apple had the video boards on back-order [defect in the boards?], so my local dealer didn't know when the part would come in. Apple rep called a couple days later and offered me a choice: wait for replacement part and get a free iPod Touch for being without my computer, or accept a new 27" iMac [shipped to local dealer so they could transfer my files, and return the 24" iMac to Apple].
I picked getting a new iMac, and will always buy Applecare for any future Apple products I buy. :)

Direct link | Posted on Jan 14, 2014 at 20:03 UTC
In reply to:

Gesture: Because we can.

I don't see one manufacturer breaking through with something more powerful, yet more elegant and simpler to operate. The entire modern digital camera interface needs to be re-thought, but that would take re-working all the existing sub-assemblies on the circuit boards, etc.

Why the "/sarcasm"?

I read it as Gesture didn't see one manufacturer - including Samsung - breaking through with a camera design & interface which had been rethought to make a powerful camera more elegant and simpler to operate.

I read it as Gesture criticizing this camera, not applauding it.

Direct link | Posted on Jan 7, 2014 at 19:22 UTC

I curious to see the bottom-plate... just to see if they have a bog-standard door for battery & memory card.

Would they really put in the "traditional" side-loading tray for one big rechargeable battery, two regular rechargeable batteries, and/or a AA-battery tray?

I guess if you want to have a camera with "Pro styling" - without actually being anywhere near the features of a "Pro" camera - then this is what you've been waiting for. :)

Direct link | Posted on Jan 7, 2014 at 19:16 UTC as 82nd comment
In reply to:

Shadowww: >The new Speed Boosters will only attach to Blackmagic cameras equipped with a Micro Four Thirds mount. They cannot be attached to Micro Four Thirds cameras from other manufacturers.

Um.. I thought MFT system was about inter-manufacturer compatibility?

Blackmagic cameras use the MFT mount, but use a smaller sensor than MFT... see CyberStudio's post, above, for dimensions

So while they make use of the MFT mount, they are _not_ "MFT system" cameras.

Direct link | Posted on Dec 3, 2013 at 23:44 UTC
On New anamorphic adapter lens for iPhone 5/5S post (37 comments in total)

Because I am already bring my iPhone, so I just have to carry an additional adapter, or two, and not a "travelzoom" camera. If I was trying to be "serious" I would bring my NEX-7 and lenses.

Direct link | Posted on Dec 3, 2013 at 01:31 UTC as 21st comment | 1 reply
In reply to:

EssexAsh: if they had nailed a bit of wood on the side it would of got its price.

I thought that only worked for Hasselblad...

Direct link | Posted on Nov 24, 2013 at 19:26 UTC
On Rare photos of Rolling Stones emerge from estate sale article (106 comments in total)

Love the "Motor Lodge" sign in the background of #6.

Direct link | Posted on Nov 17, 2013 at 15:21 UTC as 40th comment
On Iain McKell photographs 'The New Gypsies' article (184 comments in total)
In reply to:

gusda9: These people are not original gypsies like I am they are Irish people living in a camp Real gypsys spread from India a thousand years ago They don't even speak the Romani language All of you are very ignorant of the culture of Gypsys We speak a very Distinctive language that is understandable Throughout the world by Other Gypsies Its like seeing any Asian person and saying they are Chinese Really people you need to google stuff up

The article doesn't say they are "original" gypsies, it says they are 'the new gypsies'.

Direct link | Posted on Oct 20, 2013 at 19:24 UTC
On Fujifilm X-M1 Review preview (219 comments in total)
In reply to:

Mirrorless Crusader: DPR why are you giving almost every half-decent camera a gold star now? Literally a large a majority of $600+ cameras now are getting gold stars, it completely dilutes the rating system and makes it look like you are just using it as a marketing ploy to sell cameras at Gear Shop. Can't you come up with a system where only a few cameras at most each year get the top award? Then we would actually know which you really think are best, because right now it looks like you're just trying to satisfy everybody and as a result satisfying nobody.

The problem with reserving Gold rating for only a few cameras is: The great cameras are not all released at the same time.

What happens when they hold-off giving out one of the few remaining Gold ratings, just in case they need one later in the year - when some great camera MAY be released?

Or, do they just give them out as the cameras arrive on the market, and "too bad" to the great cameras which debut after all the year's allotment of Gold ratings have already been handed-out?

Direct link | Posted on Sep 18, 2013 at 00:04 UTC
On Ten one-of-a-kind cameras from the 21st century article (248 comments in total)
In reply to:

Roman Korcek: Does anyone know why Hologram AF and the NightShot / NightFraming capabilities had to go? At least Hologram AF has always seemed very useful to me.

To CollBaxter
Which is exactly what happened when Sony changed the design of Nightshot in an attempt to prevent people from using it to 'see-through' light-weight clothing in sunny weather = pre-mod versions of the camcorder were flying off the shelves. :)

Direct link | Posted on Sep 4, 2013 at 14:01 UTC
On Ten one-of-a-kind cameras from the 21st century article (248 comments in total)
In reply to:

Roman Korcek: Does anyone know why Hologram AF and the NightShot / NightFraming capabilities had to go? At least Hologram AF has always seemed very useful to me.

My impression was:

1. People were leery of lasers being shined in their eyes, when having their pictures taken. Sony could claim - till they were blue in the face - that there were no harmful side-effects, but its a PR battle you can't win.

2. Sony had a PR nightmare on their hands when people started using Nightshot features of Sony cameras/camcorders in bright sunlight = "letting you see through people's clothes". So they added circuitry which would prevent IR use in sunlight... but the damage was done. Anyone seen taking pictures/videos out in public, with a Sony camera, was suspected of being a pervert.

The two links below are just the tip of the iceberg as to how wide-spread the "Sony Nightshot = see under your clothes" meme was.

http://www.wired.com/culture/lifestyle/news/1998/08/14447

http://www.youtube.com/watch?v=WxWrMX9lzd8

Direct link | Posted on Sep 3, 2013 at 14:46 UTC
Total: 66, showing: 1 – 20
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