Osvaldo Cristo

Osvaldo Cristo

Lives in Brazil Itapevi, SP, Brazil
Works as a Engineer
Joined on Oct 22, 2002


Total: 139, showing: 1 – 20
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It was the successor of my first digital camera... Kodak DC260 I bought on 1998... and paid USD 1,000 for it!

I purchased it to learn composition to upgrade to a "high end" SLR but that small camera "spoiled me": I waited until Nikon released D100 to go to a SLR... more specifically DSLR.

Link | Posted on Oct 20, 2016 at 23:57 UTC as 15th comment | 1 reply
On article Throwback Thursday: Canon PowerShot Pro70 (111 comments in total)

What a monstruosity!

Link | Posted on Sep 15, 2016 at 21:20 UTC as 56th comment

Well, not Brazilians, but foreign were his thieves: Venezuelan Marco Antônio Ojeda Peña, Peruvian Williams Teodoro Torres Toledo and Colombian Lina Marcela Ramires Saavedra are at the prision since nine days ago.

Unfortunately the bad character is spread on the world... :-(

Link | Posted on Aug 16, 2016 at 13:58 UTC as 8th comment
In reply to:

Ruy Penalva: Fora Temer! Usurper.

Fora comunas... Já vão tarde!

Link | Posted on Aug 6, 2016 at 18:01 UTC
In reply to:

ozturert: I hear these things happening quite frequently in Brasil. Not good for reputation: Country of thieves?

Yes, it is a country of robbers and other very bad things... but is a great Democracy: its highly corrupt government reflects its mostly highly corrupt people that vote in the guys that reflect themselves at best...

I am really sorry for a minority of decent people living there that does not fit that general profile.

Link | Posted on Aug 5, 2016 at 22:34 UTC

I never liked Mavica... My Kodak DC260 I bought on 1998 had 1.5M pixel images, good optics and used 16MB CF cards... Great time them... 😋

Link | Posted on Aug 4, 2016 at 12:08 UTC as 103rd comment | 1 reply

Funny. Very funny. 😂

Link | Posted on Jun 21, 2016 at 16:23 UTC as 19th comment
On article Waterfails: We test Pentax K-1's Pixel Shift (225 comments in total)

Honest evaluation. Thank you DPR.

Link | Posted on May 31, 2016 at 20:22 UTC as 92nd comment
On article Back to the action: Nikon D500 Review (1097 comments in total)

Wow! Even Nikon sometimes can do that right! :)

Well done Nikon.

Link | Posted on May 25, 2016 at 21:35 UTC as 146th comment | 1 reply
On article Benchmark Performance: Nikon D810 review (1989 comments in total)
In reply to:

mike earussi: This review was obviously written before the K1's DR test was done, because the K1 beats the Nikon in Pixel Shift mode by several stops.

Wrong. Nikon D810 also supports multi exposure and you can use up to ten exposures (instead of four) stacked and get muuuuch lower noise level.

Link | Posted on May 14, 2016 at 22:32 UTC
On article Benchmark Performance: Nikon D810 review (1989 comments in total)

´What does this mean? It means you can underexpose your images to protect your highlights as much as you'd like. Leave your graduated ND filters at home or, better yet, sell them while they're still worth something.´


´The Nikon D810 is one of the best-rounded DSLRs we've ever tested´

Fully agree. That was the reason I purchased it a couple of months after its release on 2014...

Thanks, DPR staff. Good review. I liked specially your comparision on low light AF.

Link | Posted on May 14, 2016 at 22:07 UTC as 70th comment

Seventeen hours? Good luck to guess the correct exposure at the natural environment.

Although it is obviously demanding more work, I think it is safer to go to multi shot and postprocessing them conveniently.

Link | Posted on Mar 5, 2016 at 17:58 UTC as 19th comment | 3 replies

Combine higher technological complexity and price pressure resulting more complex industrial manufacturer process at their supply chain, it is almost a miracle so low level of issues!

Even high grade multi-billion military and aerospace projects presents eventually critical issues (just to name one, one o-ring for the US space shuttle program).

Unfortunately there is no way to be sure any manufactured stuff is problem free. No way. Period... and if you run at a budget, the things are simply worse.

Link | Posted on Mar 5, 2016 at 17:49 UTC as 13th comment

Why bashing Canon?

There is much more for tools than technology stuff.

It looks me professionals are making more money with Canon equipment than any other brand, so it is logical professionals looking for them. There are good reasons for that.

It is obvious the total photography experience most amateurs, either beginner or advanced, is very positive as Canon outsells any other brands for that segment.

So, why to be so harsh with Canon? They are not my chosen brand but it looks me they are making a good job. Do I have to bash them only because they are not offering exactly what I personally am looking for? Ok... it is Internet...

Link | Posted on Mar 5, 2016 at 17:36 UTC as 9th comment | 2 replies
On article UPDATED: CP+ 2016: shooting the Pentax K-1 in Yokohama (378 comments in total)
In reply to:

dosdan: Cary, I understand you only had a few hours to use the camera. But there's some nice features in Pentax cameras that make the shooter's life easier.

For example, in your "Pentax K-1 Pixel Shift Resolution demo" video, you zoomed in repeatedly to check the effect of the pixel-shifting. If this camera is like earlier Pentaxes, when the review image appears on the back LCD, you can just turn the rear dial (now used for zooming) 1 click to the right.

Rather than going 2x, 2.8x, 4x ... 16x to check the focus, you can preset the first-click amount. On my K-3, I've set it to 8.3x (100%). So I get a very convenient jump to 100% pixel-peeping for focusing accuracy. Once there, left-turning the dial zooms out (8x, 5.6x etc), while right-turning zooms in (11x, 16x), and pressing the OK button on the back returns you to 1x.

Your current zoom level & panning position (e.g. lower-right corner) holds as you use the front dial to move through reviewing shots.

All very sensible.


@dosdan: Nikon cameras when programed to zoom in at a ratio (it can be 100% or other values) allows you to change to next/previous picture maintaining zoom ratio and picture position. If you click again you zoom out to full screen mode.

Besides newer cameras as my D810, it works also for older cameras as my D300s and even D200, if my memory isn't failing.

Link | Posted on Mar 3, 2016 at 02:54 UTC
On article CP+ 2016: Hands-on with new Sigma SD cameras and lenses (309 comments in total)

Sigma SD Quattro is 8% wider and 11% shorter than Nikon D7200.
Sigma SD Quattro is 19% thicker than Nikon D7200.
Sigma SD Quattro [625 g] weights 18% (140 grams) less than Nikon D7200.

Sigma SD Quattro dimensions: 147x95.1x90.8 mm (it is ML!)
Nikon D7200 dimensions: 135.5x106.5x76 mm (it is DSLR!)

Source: http://camerasize.com

Link | Posted on Feb 25, 2016 at 18:45 UTC as 51st comment | 3 replies

My Acratech Ultimate has seem a lot of work in the last twelve years... as well a lot of abuse, and is performing very well yet.

I am considering to go to a GP ballhead in the next couple of years... Thanks for the comparison.

Link | Posted on Feb 24, 2016 at 20:44 UTC as 1st comment
In reply to:

Dimit: The 18-50 compared to the other two,will sell 10:1 !!!

Well, not for my taste. Thanks. No interest on the WA or superzoom version, but I am seriously considerring the 24-85 version.

Link | Posted on Feb 24, 2016 at 07:08 UTC
In reply to:

jpeghorror: The pedants are out as usual, boring everyone with their twaddle.

In the world of urban photography, these discreet little wonders with their super-fast AF are going to kick ass, EVF or not.

One of the strong points I saw to migrate from P7100 to P7800 and disconsider the P7700 was the EVF as I consider myself a "viewfinder guy".

For my surprise just a minority of my 10,000+ shots from P7800 was made using the viewfinder...

Anyway I would consider seriously to buy the optional EVF if I decide to go to that camera. :-)

Link | Posted on Feb 24, 2016 at 00:08 UTC
In reply to:

Ken Aisin: DL18-50 is the one I would get if it came with an EVF.

According nikonusa site the optional EVF is 2.4Mpixel... If it can reflesh fast and good color, IMO it is worth...

Link | Posted on Feb 23, 2016 at 20:31 UTC
Total: 139, showing: 1 – 20
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