Marcelobtp

Marcelobtp

Lives in Brazil Rio de Janeiro, Brazil
Works as a Student/photographer
Joined on Nov 26, 2010

Comments

Total: 93, showing: 1 – 20
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In reply to:

Dr_Jon: This seems worth a watch too...
"A7s vs GH4 Epic Shootout in 4K"
https://www.youtube.com/watch?v=qdMypfYrKgw
(Just found in the m43 forum here.)

http://en.m.wikipedia.org/wiki/Moir%C3%A9_pattern

Direct link | Posted on Aug 12, 2014 at 15:02 UTC
In reply to:

Dr_Jon: This seems worth a watch too...
"A7s vs GH4 Epic Shootout in 4K"
https://www.youtube.com/watch?v=qdMypfYrKgw
(Just found in the m43 forum here.)

I will read it, thanks, but in advance i know that micro-lens tech will not be equal to smaller photodiodes, and will introduce some kind of distortion in the process.

Direct link | Posted on Aug 12, 2014 at 14:42 UTC
In reply to:

Dr_Jon: This seems worth a watch too...
"A7s vs GH4 Epic Shootout in 4K"
https://www.youtube.com/watch?v=qdMypfYrKgw
(Just found in the m43 forum here.)

The process will be similar, but is just about physics. Maybe i`m thinking that the photodiodes are rounded, and thats why they would have more space between them, so they could catch more light thats are not at 90 degrees em relation to the sensor. But supposing i`m wrong about it as you have more resolution with a smaller size you get more fine detail, and finer details are the cause of moire, because a bigger diode can`t distinguish that as good as a smaller one.

Direct link | Posted on Aug 10, 2014 at 14:37 UTC
In reply to:

Dr_Jon: This seems worth a watch too...
"A7s vs GH4 Epic Shootout in 4K"
https://www.youtube.com/watch?v=qdMypfYrKgw
(Just found in the m43 forum here.)

I will see the test but the reason for the mooire is that the photodiodes are bigger and has much more space between them compared to the gh4 that has 16 mpx and uses only about twelve in the center i assume, so you can`t see the same amount of moire, and thats the same reason why nikon sold the d800e, when FF get at the same pixel size of the GH4 we probably will not see any moire anymore.

Direct link | Posted on Aug 8, 2014 at 14:34 UTC
On Nikon D810 Preview preview (1484 comments in total)
In reply to:

Marcelobtp: The only thing i want to know about the d810 is dynamic range at iso 64.
It is better then a7r iso 100?
This is really a true base iso 64 with all of its vantages?

Thanks LSE.

Direct link | Posted on Jul 24, 2014 at 14:54 UTC
On Nikon D810 Preview preview (1484 comments in total)

The only thing i want to know about the d810 is dynamic range at iso 64.
It is better then a7r iso 100?
This is really a true base iso 64 with all of its vantages?

Direct link | Posted on Jul 23, 2014 at 23:31 UTC as 126th comment | 2 replies
In reply to:

Marcelobtp: LOOK AT IT: http://www.magezinepublishing.com/equipment/images/equipment/dp2-Quattro-5446/highres/Sigma-dp2-quattro-Sheffield-SDIM0015_1404148755.jpg
AMAAAAZING, im bought by this image, JPEG OOC

Sorry nick, i don't have enough iq, neither understanding of the english language, to understand what you just wrote here.
By the the way, normaly, questions in english starts with verb to be.
Are you impressed by that picture?

Direct link | Posted on Jul 3, 2014 at 20:24 UTC
In reply to:

Marcelobtp: LOOK AT IT: http://www.magezinepublishing.com/equipment/images/equipment/dp2-Quattro-5446/highres/Sigma-dp2-quattro-Sheffield-SDIM0015_1404148755.jpg
AMAAAAZING, im bought by this image, JPEG OOC

How can't i be impressed with this image, almost to none aberration of any kind very good dynamic range, excelent color reproduction, excelent contrast and microcontrast, excelent pixel level resolution, get a d800e put at the same spot and a defy you that you will get a result like this, i can see every tile of every house. Sharp edge to edge.

Direct link | Posted on Jul 2, 2014 at 16:20 UTC

LOOK AT IT: http://www.magezinepublishing.com/equipment/images/equipment/dp2-Quattro-5446/highres/Sigma-dp2-quattro-Sheffield-SDIM0015_1404148755.jpg
AMAAAAZING, im bought by this image, JPEG OOC

Direct link | Posted on Jul 2, 2014 at 00:04 UTC as 25th comment | 9 replies
On Panasonic Lumix DMC-FZ1000 First Impressions Review preview (1282 comments in total)
In reply to:

Sonyshine: Sony needs to cut the price if they don't want to lose significant sales to the Panasonic.

Missread???

Direct link | Posted on Jul 1, 2014 at 22:52 UTC
On Panasonic Lumix DMC-FZ1000 First Impressions Review preview (1282 comments in total)
In reply to:

jaykumarr: The sony camera used in this test, is a poor quality one. It has consistently produced sharper output in RHS and softer output in LHS. This flaw is present in all the photos.

RHS LHS???

Direct link | Posted on Jul 1, 2014 at 22:39 UTC
In reply to:

Phathom: A fixed lens compact seems quite odd to me.

The problem is what incredible quality zoom lens will give this sensor justice while mainting this compactness?
This camera is a complete conception and know its market place.
Sigma this year is just getting everything right.
The answer is that people who buys cameras today are searching for the ultimate quality in very compact system, and this cameras delivers.
Even d810 probably don't compare at it at low iso. The merrils give that sharp image that my d7000 never came close. My friend's d800e at pixel level is disgusting its like night and day comparing it to a merril.

Direct link | Posted on Jul 1, 2014 at 22:10 UTC
On Nikon D810: What You Need to Know article (141 comments in total)
In reply to:

km25: Things will always improve, part of this game is to hold back just a bit, to make look like your always and improving. Therefore more money for them too. If this game is new to you, you should just take pictures and for get about new cameras.

d800 was not complete to compete with 5dmarkIII
As d600 was not complete too.
Nikon for whatever reason was rushing with a incomplete defective product. Maybe because of the facilities that were lost thailand...
Who knows, but they shouldn't push it to the consumers, bad move, bad decision. No respect for consumer lost credibility time to change the game.

Direct link | Posted on Jun 27, 2014 at 13:33 UTC
On Nikon D810: What You Need to Know article (141 comments in total)
In reply to:

rhlpetrus: Thanks, this is what one expects from DPR, an a analysis of the new features, well-done (and a much better approach than the one in the "first impressions review" published yesterday, with some out of place negative comments, implicit in the title "a bit better"). This is actually a very welcome update in many aspects, especially for those that did not go for the original versions.

Totaly agreed

Direct link | Posted on Jun 27, 2014 at 13:24 UTC
On Nikon D810 Preview preview (1484 comments in total)
In reply to:

Retzius: Nice camera. However, I must say the latest releases of digital cameras are getting awfully expensive. Even for an admittedly pricey hobby, the cameras and lenses released within the last couple of years really are pushing the boundaries of "affordability" for the amateur or hobbyist.

@Cliff Fuji
A studio photographer, is a pro and generaly don't need any of this.
I think this pro thing is more of a marketing than the real thing.
The price of a d4s or 1dx is not calculated by the materials or the quality of nothing, the price is because for people who need a rough body and faster speeds and bla bla will have to buy it or will not be able to compete equaly with the others who have it.
I would like to know how much costs the manufacturing process of each camera and lenses, and how much is the profit of the companies. I would like to know too, how much they forfeit in non professional cameras just to you buy an more expensive one.
Forfeiting on software for me is just bad faith. i can't agree with this kind of thing.

Direct link | Posted on Jun 26, 2014 at 21:42 UTC
On Nikon D810 Preview preview (1484 comments in total)
In reply to:

Marcelobtp: I would like to see now Nikon offering not only brighter viewfinder but bigger too and when it became possible,a hybrid viewfinder, this would be an instant hit.

Not necessarily, d4s has the same, or at least same sized viewfinder as d800, 0.7 mag, 1dx from canon has 0.76
I do think this make a real diference and comfort when shooting, primarily for those who use glasses like me.
Everytime a new tech is created, and maybe in the future the hybrid viewfinder will not need to be with a semi-transparent mirror.

Direct link | Posted on Jun 26, 2014 at 21:28 UTC
On Nikon D810 Preview preview (1484 comments in total)
In reply to:

solarider: The low ISO ability at 64 and 32 should be terrific for landscape, to name just one use.

iso 32 probably has less DR than iso 64 in this case because is the lo 1, what means that should be used when you want cleaner files or to use in a urgent situation where you can't use a higher shutterspeed than 1/8000 , but with DR reduced

Direct link | Posted on Jun 26, 2014 at 21:18 UTC
On Nikon announces full-frame D810 with no OLPF article (98 comments in total)
In reply to:

backayonder: So is this a poor man's D4s ? And good enough for sports

i would change the 36 mpx for a 24 mpx without a blink.
If it give me cleaner high iso performance 2 to 3 fps more, and a smaller size file, faster editing is great.

Direct link | Posted on Jun 26, 2014 at 21:12 UTC
On Nikon announces full-frame D810 with no OLPF article (98 comments in total)
In reply to:

backayonder: So is this a poor man's D4s ? And good enough for sports

i would change the 36 mpx for a 24 mpx without a blink.
If it give me cleaner high iso performance 2 to 3 fps more, and a smaller size file, faster editing is great.

Direct link | Posted on Jun 26, 2014 at 21:11 UTC
On Nikon announces full-frame D810 with no OLPF article (98 comments in total)
In reply to:

backayonder: So is this a poor man's D4s ? And good enough for sports

i would change the 36 mpx for a 24 mpx without a blink.
If it give me cleaner high iso performance 2 to 3 fps more, and a smaller size file, faster editing is great.

Direct link | Posted on Jun 26, 2014 at 21:11 UTC
Total: 93, showing: 1 – 20
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