gianstam

Lives in Greece Ioannina, Greece
Joined on Mar 22, 2007
About me:

Canon G1 X, Samsung EX1, Pentax k20d, Oly E330, Canon AE1P, Nikon 990

Comments

Total: 102, showing: 1 – 20
« First‹ Previous12345Next ›Last »
In reply to:

Aroart: Wow.. do people still use DSLR's..

No generally. Photographers do.

Link | Posted on Jul 7, 2017 at 04:48 UTC
In reply to:

Cary Knoop: From the article: "4:2:2 10-bit codec is 64x as much data as before"

No it isn't!

10 bit is 4 times as much data as 8 bit and 4:2:2 is 1 1/3 times as much data as 4:2:0, so it is 5 1/3 times as much not 64 times as much.

Dear Rambalac , can you explain? What I know is that in binary system numbers up to 1 can be described using 1 digits, up to 2 2 digits, up to 4 3 digits... up to 256 can be described using 8 digits and so on. Every added digit on binary number duplicates the previous achieved total described number.
You may know the joke: There are only 10 kinds of people Those who understand binary and those who don't.

Link | Posted on May 9, 2017 at 03:17 UTC
In reply to:

Cary Knoop: From the article: "4:2:2 10-bit codec is 64x as much data as before"

No it isn't!

10 bit is 4 times as much data as 8 bit and 4:2:2 is 1 1/3 times as much data as 4:2:0, so it is 5 1/3 times as much not 64 times as much.

"How is 10 bit fout times more data than 8 bit?"
Since 8bit can handle 256, say, colors while 9 bit 512 and 10 bit 1024 (1024=256X4)

Link | Posted on May 8, 2017 at 20:01 UTC
In reply to:

Father Bouvier: So, it's a wide gamut monitor. What for? The internet and practically everything else is standardized on sRGB. And worse, most browsers and other software ignore color profiles completely. You may be proud of great edit on your monitor, but 99.9% of the world will see completely screwed up colors.

But actually, the situation is even worse than that. I recently looked at 10 popular devices (phones, tables, laptops). They all had their color profiles out of whack, all overly saturated and contrasty.

Bottom line. What you see on your wide gamut calibrated monitor is completely different from what the rest of the world sees on their phones and tablets.

@Thematic. Indeed. And more: personal satisfaction

Link | Posted on Apr 28, 2017 at 18:28 UTC
On article Serious speed: Sony a9 real world samples gallery (557 comments in total)

RawTherapee: Neutral conversion (no sharpening or noise reduction or exposure correction).
https://www.dpreview.com/galleries/8367214844/photos/3625478/dsc05197

Link | Posted on Apr 27, 2017 at 17:01 UTC as 104th comment | 1 reply
On article Sony a9: Why being better might not be enough (766 comments in total)
In reply to:

ottonis: "...short zoom, long zoom, super telephoto. Essentially a 16-35, 70-200 and 400 mm F2.8,' explains Seattle Times photographer..."

To my knowledge, many sports photographers carry a couple of camera bodies with different lenses attached.
As of now, I do see the A9 as a "second body" with a short zoom attached ti it, alongside a D5 or 1Dxii with a long zoom.
The weight and size advantage if the A9 would make it the ideal "tiny" companion to a big camera with a gigantic lens.
That's exactly how I envision the A9 to make its way into the pro sports photography segment.
If the pro's like its performance they will ultimately upgrade to longer lenses once they become available.

It's a good point. Olympus with em1II wants to play this 'second/buckpup' role. And it has some advandages beyhond smaller sensor.

Link | Posted on Apr 25, 2017 at 06:01 UTC
On article Sony a9 Full Review: Mirrorless Redefined (2723 comments in total)
In reply to:

Sdaniella: A9
as far as Sony FF electronic shutter sensor tech goes

if one finds the Max 20fps (jpeg or compressed RAW?) overkill (for indiscriminate shooting)

and one finds 10fps (jpeg or compressed RAW) more manageable (keepers from more selective shooting) without the slower rate introducing any VF blackouts whatsoever

it would make better sense to opt for the better IQ file format of UN-compressed RAW which has only a Max 12 fps, as its manageability will differ little, timewise, from opting for lower 10fps (jpeg or compressed RAW) which are file formats with known IQ artifacts and limitations for best pp

as far as Sony FF mechanical shutter tech goes

well, they are still stuck at a paltry Max 5fps snails pace (it is so mechanically gravity restricted, it has been known to operate at slightly different (faster?/slower?) shutter speeds depending on orientation of camera body (upside-down? faster than rightside-up?)

bizarre

Sony's tech limitations are always everpresent from older models

What exactly did you say? Sony's tech limitations are always everpresent from older models?

Link | Posted on Apr 23, 2017 at 19:05 UTC
In reply to:

Iloveaircraftnoise: Fantastic specs..... Improved battery life? I wonder if the EVF still lags when you pan around quickly or expose in low light.

Stupid me. Wrong post reply

Link | Posted on Apr 20, 2017 at 07:17 UTC
In reply to:

Iloveaircraftnoise: Fantastic specs..... Improved battery life? I wonder if the EVF still lags when you pan around quickly or expose in low light.

Ahh people. The same story. All the others must react like you. The 1dx and d4/5 users will have a draft look at this rally good camera

Link | Posted on Apr 20, 2017 at 07:05 UTC
In reply to:

Mark Turney: What do you call 50 lawyers at the bottom of the ocean?

A good start 😂!

On a serious note - if it was plagiarized, it should be compensated.

"What do you call 50 lawyers at the bottom of the ocean?"
Too little...

Link | Posted on Apr 17, 2017 at 21:07 UTC
On article Nikon D7500 vs Nikon D500: Which is better for you? (397 comments in total)
In reply to:

Sarah Terra: Number one problem for the 7500 is the price, need to come down to 1000

Why 1000 and not 800?

Link | Posted on Apr 14, 2017 at 09:42 UTC
On article Canon EOS Rebel T7i / EOS 800D Sample Gallery (110 comments in total)
In reply to:

Miki Nemeth: For videography: has the more expensive 77D any more features? It seemed to me that for video the 800D and 77D are the same, and nearly identical to the 80D, M5 and M6. Can someone post a summary of the key differences for video features of these Canon DPAF cameras? Thank you so much.

Carey... One of shortests and most informative posts ever. Thanks.

Link | Posted on Apr 7, 2017 at 19:59 UTC
On article Canon EOS M6 sample gallery (114 comments in total)
In reply to:

fedway: After looking at this gallery and the Pentax KP gallery, I must say Spencer is a talented photographer. I've been to the same places in Seattle and I have to admit I didn't see the angles that Sam saw. I'm glad to be schooled. And again a good reminder that it's not the gear, it's the person holding it.

"that it's not the gear, it's the person holding it"
Don't say it again here. Danger...

Link | Posted on Mar 28, 2017 at 17:45 UTC
On article Re-make/Re-model: Leica Summaron 28mm F5.6 Samples (202 comments in total)
In reply to:

Davud: BS lens...
Pancake Panasonic 14 f/2.5 @f2.8 has more resolution than this for 1/10 price

Ok, someone may agrees. But a serious question (not 1st time I did it).
If someone gave you as a (don't sell it) gift the M10 with this lens and a whatever you want Panasonic with 14 f2.5, which one would you get?

Link | Posted on Mar 24, 2017 at 20:56 UTC
On article Re-make/Re-model: Leica Summaron 28mm F5.6 Samples (202 comments in total)
In reply to:

Ebrahim Saadawi: Since mosr phones are 28mm equivalent, and dince the image quality is quite poor, I really do see better 28mm photographs from an Iphone or Samsung or others. Very boring look coupled with low IQ makes a boring image list.

I can get markedly higher quality images from my 60D + 28mm prime. And there's a 24mm pancake if we went that argument of size.

"I can get markedly higher quality images from my 60D + 28mm prime"
Sure you can, isn't it? Please show us.... Good photographs are so rare nowadays.

Link | Posted on Mar 24, 2017 at 20:49 UTC
On article Leica SL Review (1092 comments in total)
In reply to:

NemanRa: Leica SL + Leica Summilux-SL 50mm F1.4 ASPH = >$12,000

Now let's see other options:
1. Fujifilm GFX 50S + GF 63mm f/2.8 R + GF 32-64mm f/4 R + GF 120mm f/4 Macro
= $12,800
2. Alpha 7R II + FE 50mm f/1.4 + FE 85mm f/1.4 GM + FE 70-200mm f/2.8 GM + Batis 18 and 25mm
= <$12,000
3. Canon 5DS + Canon 1DX II + EF 24-70mm f/2.8L II USM + EF 70-200mm f/2.8L IS II
= <$12,000
4. Nikon D810 + Nikon D500 + Nikon D5 + lenses
= <$12,000

I really like the modern look of this camera, but the price is an arm and a leg...
Even medium format Fuji, Hasselblad and Pentax with the state of the art sensors are cheaper...
Regards

Other option for whom?

Link | Posted on Feb 23, 2017 at 05:12 UTC
On article Sony SLT a99 II Review (1579 comments in total)
In reply to:

NJOceanView: Did I miss the part where you shoot something six ISO stops too low and push it back to normal to show how much better this is than a Canon?

@Chris. Thank you

Link | Posted on Feb 14, 2017 at 08:16 UTC
On article Sony SLT a99 II Review (1579 comments in total)
In reply to:

NJOceanView: Did I miss the part where you shoot something six ISO stops too low and push it back to normal to show how much better this is than a Canon?

@Rishi. Sorry, but I too can't find it. I found it via 1DXII review. There is no link on menus (like Image comparison tool). To be sure: I'm refering to RAW Dynamic Range tool.

Link | Posted on Feb 14, 2017 at 07:12 UTC
On article Nikon D5600 sample gallery (163 comments in total)
In reply to:

brycesteiner: The sample galleries have gotten about as exciting as watching my Dodge rust. Nothing against DP. It's just the cameras are all very good. The differences come down to 8000 ISO - which is what - 1% of the shots?

@ED. Apologies. Misunderstanding.

Link | Posted on Feb 6, 2017 at 06:17 UTC
On article Nikon D5600 sample gallery (163 comments in total)
In reply to:

brycesteiner: The sample galleries have gotten about as exciting as watching my Dodge rust. Nothing against DP. It's just the cameras are all very good. The differences come down to 8000 ISO - which is what - 1% of the shots?

Edward, you have strange sense of humor

Link | Posted on Feb 3, 2017 at 16:56 UTC
Total: 102, showing: 1 – 20
« First‹ Previous12345Next ›Last »