Silvarum

Silvarum

Lives in Russian Federation Russian Federation
Joined on Jul 2, 2011

Comments

Total: 95, showing: 1 – 20
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In reply to:

liquidsquid: I'm not sure if this is possible. White LEDs contain phosphors to generate the colors other than blue (of which the LEDs are based upon). The phosphors do not really turn on and off that fast. There is a charge time and a discharge time much longer than 1/2,000,000 AFAIK. If anything you will wind up with a rainbow effect on moving subjects as the various phosphors ramp up and back down in brightness as different colors will have different response times.

But on those pictures you can clearly see yellow phosphor, so they probably not using multiple-color LED solution.

Direct link | Posted on Dec 3, 2014 at 05:01 UTC
On Apple iPhone 6 Plus camera review post (190 comments in total)
In reply to:

Peiasdf: Amazing performance especially in low light. I think 8MP might be the break even point for daytime resolutions and low-light performance. Some phones have high resolution image in daylight but the low-light performance are laughable because of the super tiny cells.

And some have high resolution image in daylight and very good low-light performance at the same time because of the super tiny cells.
Really, pixel size has little to do with low light performance, it is sensor size that makes difference.

Direct link | Posted on Oct 22, 2014 at 18:08 UTC
In reply to:

Jogger: Too bad it runs Android.

There is no pleasing you people.

Direct link | Posted on Sep 15, 2014 at 18:45 UTC
On ZTE announces Nubia Z7 with 5.5-inch QHD display post (35 comments in total)
In reply to:

martinj68: Can someone please explain why we need QHD displays on a phone screen?
My Galaxy S5 has full 1080 and impossible to see the pixels with the naked eye, so why are manufactures wanting to go beyond this already high res for such a small screen?

Because we can!

Direct link | Posted on Jul 8, 2014 at 18:45 UTC
On Hands on with the Pentax 645Z article (661 comments in total)
In reply to:

plevyadophy: Have all the Pentax fans actually considered the fact that this thing is NOT really medium format; it's not true medium format in sensor size nor is it digital medium format.

It's more like the medium format equivalent of a Leica M8 or Canon 1D with their APS-H sized sensors, and some have even gone as far as referring to this new Pentax's sensor size as Medium Format DX.

Really, in my view, things only matter when the diagonal of the sensor/film roughlydoubles/halves. So going from micro Four Thirds to 35mm,and then from 35mm to 645 or 6 x 6, and then up to 10 x 8 all make a significant difference. For those going from Pentax APS-C sensor cams to this Pentax 645Z there's gonna be a MASSIVE difference but I don't think it's worth bothering with if you already own say a Nikon D800e.

The camera body is superb though, the best on the market in my view. It's just a pity that they didn't provide a fully articulating rear LCD instead of the mere flip up and flip down variety.

@ecka84: I believe 645 is Pentax 645 A mount reference, not the format.

Direct link | Posted on May 1, 2014 at 15:41 UTC
On Sigma 50mm F1.4 DG HSM | Art Lab Test Review preview (568 comments in total)

What about flare control?

Direct link | Posted on Apr 19, 2014 at 09:20 UTC as 124th comment
In reply to:

Toh: Samsung S4 battery is 2600mAh. To fully charge it in 26 seconds the minimum charging current would be 360A regardless of material used. 360A is more than a typical current draw when cranking a car. The cable used has to be at least the size of car battery cable, which gets hot when cranking for too long. A typical USB cable would evaporate in a split of a second! If the charging voltage is 5 volts you would need a 1.8KW (360A*5V) charger! Current S4 charger is about 10W!

But what phone operates at 110V? I wouldn't want to carry dynamotor with me to convert 110V->5V.

Direct link | Posted on Apr 12, 2014 at 13:06 UTC
In reply to:

love_them_all: First I was happy to read this. But then the Hassy of today would not put out another reasonably cost product. It will be another expensive MF that is easily over $20k.

Perhaps that is the reason they don't have the money to focus on MF. :)

Direct link | Posted on Feb 5, 2014 at 13:09 UTC
On Phase One announces IQ250 50MP CMOS medium format back article (197 comments in total)
In reply to:

brycesteiner: You can shoot a lot of film for that price, with a larger dynamic range.

Does DPReview do reviews on this equipment?

Larger dynamic range, right. Your sources are like 5 years old.
Film can only dream about 14 DR stops.

Direct link | Posted on Jan 25, 2014 at 08:26 UTC
In reply to:

love_them_all: First I was happy to read this. But then the Hassy of today would not put out another reasonably cost product. It will be another expensive MF that is easily over $20k.

Well, expensive kinda goes with MF. Can't see any reason why it wouldn't be.

Direct link | Posted on Jan 22, 2014 at 02:32 UTC
In reply to:

Jogger: What is this "film" that they speak of?

Sadly, Internet people just don't know what sarcasm is.

Direct link | Posted on Jan 18, 2014 at 16:59 UTC
On DxOMark recommends lenses for the Pentax K-3 article (27 comments in total)
In reply to:

peevee1: Not surprisingly, the pancake lens performance is not impressive. But at least they are small.

Just go and take some pictures using pancake lenses instead of looking at some numbers. Then we'll talk about impressive.

Direct link | Posted on Jan 14, 2014 at 03:39 UTC
On DxOMark recommends lenses for the Pentax K-3 article (27 comments in total)
In reply to:

bossa: I can attest that the Pentax 40mm is pin sharp wide-open, unlike the DX0 Mark test results show. I cannot understand how DX0 Mark continually gets substandard test scores for Pentax lenses. Lenstip scores the DA*55 at almost 50 lpmm, one of the sharpest 50's they've tested and yet DX0 Mark gets different scores.

Another site has the canon and Pentax 40mm on about even pegging re' resolution but the Pentax has better CA but worse in the Bokeh department.

http://www.photozone.de/pentax/630-pentax40f28?start=1
http://www.photozone.de/canon-eos/772-canon_40_28_apsc?start=1

Probably because DxOMark tests only one lens and only one time. These tests are as useless as they can be. I find user reviews much more informative.

Direct link | Posted on Jan 14, 2014 at 03:37 UTC
On Instagram beta comes to Windows Phone 8 post (5 comments in total)
In reply to:

DotCom Editor: Two days, and I'm only the second to comment. That's about all the market research you'll ever need regarding "Windows Phone."

No, That's about all the market research you'll ever need regarding "DPReview Connect".

Direct link | Posted on Nov 23, 2013 at 14:11 UTC
In reply to:

yonsarh: I don't like to use filter on my cameras. It will effect on your sensor as well.

For me English is also a second language. But JWest's comment is just so funny. I don't believe he intended any offense.

Direct link | Posted on Oct 24, 2013 at 16:10 UTC
In reply to:

HowardChernin: This lens will not "act like an 85mm lens". It will give you angle of view of an 85mm lens, but the perspective will still be that of a 58mm lens. Just sayin'!

Perspective only depends on the distance between you and the subject. If you take a picture with FF + 85mm lens, and then from the same spot with APS-C + 55mm lens, then perspective will be the same.
You can easily check it yourself even with P&S. You can even take a picture from the same spot with FF + 85mm, then with FF + 21 mm, crop it to have same FOV, and you'll still have same perspective.

Direct link | Posted on Oct 17, 2013 at 04:33 UTC
In reply to:

Strikeroot: "Ugly" must be what people revert to saying when they have no other avenue for meaningful criticism.

Want a beautiful camera - buy Leica. Sony talks function here, not fashion.

Direct link | Posted on Oct 16, 2013 at 16:27 UTC
In reply to:

Axibis: Is DSLR going to die soon?

Well, AF will match DSLRs sooner or later, but I guess battery life will always be a downside. Constant sensor read-out consumes a lot of power.

Direct link | Posted on Oct 16, 2013 at 16:14 UTC
On Pentax K-3 preview (959 comments in total)
In reply to:

kecajkerugo: why so many people is talking abouit the tiny FF? Real prof. use larger format and Pentax got it: 645.
For advanced amateurs the APS-C is perfect and the m4/3 can be even more.

Well, I'd rather have APS-C with superb features than FF with mediocre.

Direct link | Posted on Oct 8, 2013 at 17:57 UTC
On Pentax K-3 preview (959 comments in total)

Pentax may not have FF, but in APS-C DSLR market Pentax provides best price/performance in my opinion.

Direct link | Posted on Oct 8, 2013 at 12:31 UTC as 222nd comment | 4 replies
Total: 95, showing: 1 – 20
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