bakhtyar kurdi

bakhtyar kurdi

Lives in Canada Winnipeg, Canada
Joined on Mar 13, 2009

Comments

Total: 51, showing: 1 – 20
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In reply to:

bakhtyar kurdi: I think using a 28mm prime, one step back you have 24mm, one step forward you have 35mm is a better idea, still useful for some.
What I really looking for is a high end 16-80 f5.6 VR full frame for landscape to replace two zooms, 14-24 and 24-70 , because I use it anyway from f8-f13.

Why you are joking and mocking? who is Sigma? are they Gods?
Pay them money and they make you whatever you ask,like a Pizza store, that simple.
Carl Zeiss made only one copy of this lens special order:
http://www.dpreview.com/articles/3865393209/zeiss1700f4
Or you are laughing at me because you think I am a poor man? what is wrong with you?

Direct link | Posted on Jun 19, 2015 at 09:55 UTC

I think using a 28mm prime, one step back you have 24mm, one step forward you have 35mm is a better idea, still useful for some.
What I really looking for is a high end 16-80 f5.6 VR full frame for landscape to replace two zooms, 14-24 and 24-70 , because I use it anyway from f8-f13.

Direct link | Posted on Jun 19, 2015 at 08:53 UTC as 116th comment | 4 replies
On #1 in France: Hands-on with DxO ONE article (193 comments in total)

I thing they are planing to export this camera to 6 hands aliens in galaxy 13.

Direct link | Posted on Jun 18, 2015 at 22:16 UTC as 47th comment
On Alpha dog: Hands-on with Sony a7R II article (955 comments in total)
In reply to:

bovverwonder: I just sold my Canon FF the same day the Sony A7R II was announced. I was sold that quick! I also shoot with Oly EM5 mk2 and Fuji XT1 (which I both love!) so I'm familiar with mirrorless. I was a Canon fanboy (heavily invested) and so are millions of shooters but I saw the light and had to get out of my comfort zone. Going to sell the remaining of all my L lenses/speedlights to fund the A7RII and a few Sony lenses. Bye bye Canon, hello mirrorless - it's the future!

Why you sell your excellent Canon lenses and buy overpriced limited Sony lenses? If I buy this camera I buy it to mount my Canon lenses on it.

Direct link | Posted on Jun 12, 2015 at 22:13 UTC
On Mono a mono: Leica M Monochrom (Typ 246) hands-on article (614 comments in total)
In reply to:

martindpr: What is the purpose of having a B&W camera in the XXI century?

Shoot color and then desaturate! Or let me guess: If you have a B&W project, you leave your D810 (or your 5D3/5Ds) at home, go buy one Leica and do the job 100% better than you would have done it with your D810??

"brings the black-and-white-only concept up to date", they should have said "brings the date back to the old black and white concept"

(The luminance resolution of a Bayer sensor is full (e.g., 36MP) while the color resolution is half (e.g., 9MP).
I don't think so, the black & white photo is the same output like the color, but disaturated in software, that is the difference this Leica camera makes.

Direct link | Posted on Jun 1, 2015 at 11:24 UTC
On Mono a mono: Leica M Monochrom (Typ 246) hands-on article (614 comments in total)
In reply to:

martindpr: What is the purpose of having a B&W camera in the XXI century?

Shoot color and then desaturate! Or let me guess: If you have a B&W project, you leave your D810 (or your 5D3/5Ds) at home, go buy one Leica and do the job 100% better than you would have done it with your D810??

"brings the black-and-white-only concept up to date", they should have said "brings the date back to the old black and white concept"

There is one reason, higher resolution, with this camera you get 24 MP b&w picture, with your d810 you will get only 9MP b&w or color picture (even if they tell you it is a 36MP camera), 36/4= 9, two green, one blue and one red.

Direct link | Posted on Jun 1, 2015 at 09:37 UTC
On Mono a mono: Leica M Monochrom (Typ 246) hands-on article (614 comments in total)

Now put this camera on a tripod, have three color filters with you, RGB, take 3 shots with each filter, then combine the 3 images to produce a super resolution color picture, so the owners have an limited option to take beautiful color pictures with their monochrome camera, am I right? what do you think?

Direct link | Posted on Jun 1, 2015 at 09:13 UTC as 104th comment | 5 replies
On Mono a mono: Leica M Monochrom (Typ 246) hands-on article (614 comments in total)
In reply to:

RogerMuss: Seems crazy that all this magnificent craftsmanship that is built to last decades will be obsoleted in a year or so when the next sensor turns up. If Leica made a camera with a sensor module that could be replaced then I'd invest in the system.

Red has one, Ricoh tried a similar idea, sensor built to lens, you have to throw the lens and sensor just keep the shell for the next sensor and lens, if someone can make a changeable sensor like a memory card slot, push it to take it out, and put your new sensor.

Direct link | Posted on Jun 1, 2015 at 08:32 UTC
On Mono a mono: Leica M Monochrom (Typ 246) hands-on article (614 comments in total)
In reply to:

Chris Noble: No hand-grip, a single control wheel, fixed LCD... how much does this camera cost?

Monochrome sensor is the same sensor used in all digital cameras without RGB coloring on them, also without all hardware and software needed to combine 3 or 4 Photodiodes to produce one dot of color information, so it should cost much less, I am not a technician, but that is what I understand.

Direct link | Posted on Jun 1, 2015 at 08:16 UTC
In reply to:

bakhtyar kurdi: I noticed many pictures are front focused, especially with fast long lenses, I don't know if those cameras has micro focus adjustment, if not, that will be a big problem.
There is only a few pictures that are really sharp, it looks like the sensor is capable, the problem lies in focus problem, if you look at the picture of the white dog, you see clearly the focus point is before its legs.

(Well If you want in focus pictures with any lenses buy the 70D or 7DMII)
I think everyone want pictures in focus with any lenses, the problem rises now because we have 24MP Rebels , and is easier to see any flows in focusing, we had a similar problem with Nikon D800, many people still believe that D700 had a better focusing system, but that is totally wrong, the 36MP needs very accurate AF system, so when Canon decided to go to 24MP after everyone else, they have to know they are facing other technical problems, they need to put at least AFMA, also the ISO noise is behind everyone else as I see from above samples, this a competition, and if they stay greedy they'll break and die.

Direct link | Posted on May 20, 2015 at 00:01 UTC
In reply to:

bakhtyar kurdi: I noticed many pictures are front focused, especially with fast long lenses, I don't know if those cameras has micro focus adjustment, if not, that will be a big problem.
There is only a few pictures that are really sharp, it looks like the sensor is capable, the problem lies in focus problem, if you look at the picture of the white dog, you see clearly the focus point is before its legs.

Look also at the lady standing by the shore, the focus point is way behind her.

Direct link | Posted on May 19, 2015 at 18:13 UTC

I noticed many pictures are front focused, especially with fast long lenses, I don't know if those cameras has micro focus adjustment, if not, that will be a big problem.
There is only a few pictures that are really sharp, it looks like the sensor is capable, the problem lies in focus problem, if you look at the picture of the white dog, you see clearly the focus point is before its legs.

Direct link | Posted on May 19, 2015 at 18:02 UTC as 18th comment | 10 replies

sex trading and drugs are connected firmly to each other, those kids don't do that to eat, but to buy drugs, so it is impossible to find a solution without solving the drug problem first, all those kids are working like slaves for drug dealers. whatever they get goes to their pockets.
But why kids addict to drugs first? it is simple, they are not satisfied with their life, so they run away from reality, and drugs help them to live in a fantastic world, drug and sex market is like a wound in humans community, where the bacterias are happy, which are drug dealers and sex customers.
But how to help those victims? It is not something new, it exists from the begging of humanity, but how bad is it in our generation? it is very bad, I read a report about this problem in England and it says %50 of women do that in one stage of their life, so there is something going wrong with the whole humanity, in my humble opinion the problem lies in ignoring our spiritual needs.

Direct link | Posted on May 16, 2015 at 07:14 UTC as 12th comment

Tokina had a big failure with their 70-200/4, Canon and Nikon did a very good job at that range, and Tokina wants to sell their 10yrs late lens for the same price as Canon and Nikon, If this lens is not superior to Tamron that has Image stabilization, I think it will not sell better than their 70-200.

Direct link | Posted on May 9, 2015 at 07:53 UTC as 14th comment
In reply to:

bakhtyar kurdi: From experience I found something interesting, but I didn't know the reason, as we know stopping down the aperture gives sharper images until the diffraction starts,and we have a sweet spot depending on the pixel density of the sensor,usually around f8, there is something similar to that related to exposure time (shutter speed).
with longer shutter speeds, you get more saturated, less noisy images, but something similar to the diffraction happens in longer shutter speeds, the sweet spot is between 4-15 seconds, after that suddenly it gets worse and worse.
To make it simpler, if we take two images of the same sense, the first image taken at ISO 100, F8, 1/125 sec, then we take the second picture using ND filters until our settings become ISO 100, F8, 8seconds, the second image is more saturated, has less noise, better DR and much richer files.
I think this article explains my findings, what do you think?

This is an article about this :
http://www.outdoorexposurephoto.com/photoblog/digital-photography-tips/89/

Direct link | Posted on Apr 28, 2015 at 18:06 UTC
In reply to:

bakhtyar kurdi: From experience I found something interesting, but I didn't know the reason, as we know stopping down the aperture gives sharper images until the diffraction starts,and we have a sweet spot depending on the pixel density of the sensor,usually around f8, there is something similar to that related to exposure time (shutter speed).
with longer shutter speeds, you get more saturated, less noisy images, but something similar to the diffraction happens in longer shutter speeds, the sweet spot is between 4-15 seconds, after that suddenly it gets worse and worse.
To make it simpler, if we take two images of the same sense, the first image taken at ISO 100, F8, 1/125 sec, then we take the second picture using ND filters until our settings become ISO 100, F8, 8seconds, the second image is more saturated, has less noise, better DR and much richer files.
I think this article explains my findings, what do you think?

No, it is real, and a few people wrote about it, I didn't want to go to details, supposed most people know when we talk about 8 seconds we have first to stabilize our camera and taking picture of a still subject,so there is nothing to do with motion blur, yes we get exact the same amount of light, but less random photons.
Try by yourself those shutter speeds (3-15 seconds) , and you'll find even a P&S camera can produce amazing pictures.

Direct link | Posted on Apr 28, 2015 at 06:58 UTC

From experience I found something interesting, but I didn't know the reason, as we know stopping down the aperture gives sharper images until the diffraction starts,and we have a sweet spot depending on the pixel density of the sensor,usually around f8, there is something similar to that related to exposure time (shutter speed).
with longer shutter speeds, you get more saturated, less noisy images, but something similar to the diffraction happens in longer shutter speeds, the sweet spot is between 4-15 seconds, after that suddenly it gets worse and worse.
To make it simpler, if we take two images of the same sense, the first image taken at ISO 100, F8, 1/125 sec, then we take the second picture using ND filters until our settings become ISO 100, F8, 8seconds, the second image is more saturated, has less noise, better DR and much richer files.
I think this article explains my findings, what do you think?

Direct link | Posted on Apr 28, 2015 at 05:34 UTC as 115th comment | 9 replies
On Yongnuo creates near-clone of Canon EF 35mm f/2 article (169 comments in total)

They have another clone for the Canon EF 50mm 1.8 II long time ago, the only difference in appearance is the name of Yongnuo instead of Canon, it is $70 new, while the original Canon is $90
http://www.ebay.ca/itm/YONGNUO-YN-50MM-F1-8-Large-Aperture-Auto-Focus-Lens-For-Canon-EF-Mount-EOS-Camer-/151499022046?pt=LH_DefaultDomain_0&hash=item23460b9ede

Direct link | Posted on Apr 25, 2015 at 16:48 UTC as 5th comment | 1 reply
In reply to:

bakhtyar kurdi: For anyone wants to buy these kind of totally manual focus lenses, I recommend to buy only Nikon version whatever camera you have, you can then buy a cheap $7.00 adapter to convert it to Canon , If you are using Sony E mount, probably you already have a Canon to Sony E mount adapter, this way you have the lens for 3 systems with $7.00 extra, and you are not loosing any function, also if you change your system you don't stuck with your lens, resale price also will be higher on the Nikon version than any other mount.

(In the examples above, though, center resolution is pretty much unchanged, it's only when you get away from center that you start to see issues. So someone shooting portraits and centered subjects is unlikely to notice an issue. A landscape photographer, though, would likely see some problems along the edges of the image.)
That is what he said, and no one buy this kind of lenses for corner to corner sharpness, because they never get sharp in corners anyways,just my experience.

Direct link | Posted on Apr 18, 2015 at 07:35 UTC

For anyone wants to buy these kind of totally manual focus lenses, I recommend to buy only Nikon version whatever camera you have, you can then buy a cheap $7.00 adapter to convert it to Canon , If you are using Sony E mount, probably you already have a Canon to Sony E mount adapter, this way you have the lens for 3 systems with $7.00 extra, and you are not loosing any function, also if you change your system you don't stuck with your lens, resale price also will be higher on the Nikon version than any other mount.

Direct link | Posted on Apr 18, 2015 at 06:49 UTC as 20th comment | 7 replies
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