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-   -   Sony nex-ea50 moire and aliasing (https://www.dvinfo.net/forum/sony-nex-ea50-all-variants/513171-sony-nex-ea50-moire-aliasing.html)

Rod Pike January 11th, 2013 05:48 AM

Re: Sony nex-ea50 moire and aliasing
 
Quote:

Originally Posted by Chris Harding (Post 1772517)
Hi Rod

I still want to know why you need a camera with a huge zoom range and why it needs to autofocus fast at 23X zoom??? I think you will find that the JVC 650 will also struggle at high zooms with autofocus.


Hmmm you out-age me by merely a year but then again we both really act and feel like we are still in our 30's don't we?

Chris

Heehee! I don't need it. But the fact that it could do it 7 times and fail on 3 just irritated me! I am an engineer and mechanical repeatability is just a thing with me. (especially when all sorts of BS comes my way telling me that I should accept it just doesn't work consistently!) I spent too many years working on six sigma performance projects to take it- In England it is called grumpy old git syndrome!

And yes Chris, on age- I have spent most of my long life trying to grow up but just can't get the hang of it, so stuff it! So, in the words of the song " forever young".

I'm really pleased that you are getting good results with the 50- I am watching this space for you further findings and observations- nothing like real data is there!
Cheers!
Rod

Chris Harding January 11th, 2013 06:14 AM

Re: Sony nex-ea50 moire and aliasing
 
Hey Rod

Well at least Steve and I are relieved that you are not participating in video surveillance with your long range zoom. (I was of course only kidding in my previous posts!)

In the morning I'm heading into our South West for a wedding shoot..the main cam will still be the Panny HMC82 but I'll shoot cutaways and try to emulate the same shots as the HMC is getting in a few clips as well...The Sony is already balanced on my stedicam (to my delight I had to remove half the lower stage weight so the drop time was normal so it should be way easier to fly)

I'll also use the EA-50 for most of the events (except speeches main camera) with the stock lens so that should give everyone a fair idea of performance. You can be assured that I will report everything I feel is worth commenting on (both good and bad)

So far I have no idea what focal length fast prime to use so I'll use the slow zoom at the reception and see what I have got into the habit of shooting with ..I think it will be most wide on the Panny (equiv 41mm) so it will tend to be around a small amount of zoom on the Sony

Chris

Robert Moran January 16th, 2013 08:19 PM

Re: Sony nex-ea50 moire and aliasing
 

Here is a video I did with the 50 and NX 7U. The still was shot using the DZ in conjunction with a 40+ year old 300mm nikkor lens and sturdy tripod. The camera performs without question. One essental. Use the loupe in bright sunlight because accurate focusing is key when using the digital zoom. Peaking & expanded focus are also key.. The system is much bigger then you think. It's a beast but the shots one can get out of this system is remarkable as seen by the work seen on this site.

The DZ, in conjunction with fast primes, is a revelation, something seen in a video shot done for a Guinness world record for door to door caroling whereby much of the shoot was done at night using another ancient Nikkor, this time a 50mm 1.4.


Steven Digges January 16th, 2013 10:24 PM

Re: Sony nex-ea50 moire and aliasing
 
Cool Stuff Robert,

Love the moon shot. It is one of my favorite subjects over the years. So...would that be 300mm x2 (digital zoom) + 1.5 conversion factor?

Curious about why you added it on to this thread?

Steve

Robert Moran January 17th, 2013 07:52 AM

Re: Sony nex-ea50 moire and aliasing
 
The DZ doubled the 300mm to 600mm and, as you correctly stated, the crop is 1.5/6, which makes the field of view equivalent to 450mm w/o DZ and 900mm with. The original is a 16m still down-sampled to 1920 X 1080. I use the pix as a thumbnail for the video and thought it appropriate as I shot the early winter piece right around the time of the full moon. :)

Robert Moran January 17th, 2013 08:12 AM

Re: Sony nex-ea50 moire and aliasing
 
Age of yours truly, 67. :)

Chris Harding January 17th, 2013 08:27 AM

Re: Sony nex-ea50 moire and aliasing
 
Hey Robert

We might be in the mid sixties BUT we act like we are still in our 30's and have the stamina to match too..I can still do a 13 hour stint at a wedding where many younger than us would complain and fade!!

It's just a number ... with weddings maybe the fact that most of the bridal party are 40 years my junior gives me an extra boost???

Chris

Don Bloom January 17th, 2013 10:01 AM

Re: Sony nex-ea50 moire and aliasing
 
Age is MIND over MATTER...If you don't mind, it doesn't matter!

I love going into weddings and seeing the parents...I have kids as old or at least close to as old as many of them. THAT does make me feel a bit old. ;-)

Steven Digges January 17th, 2013 08:44 PM

Re: Sony nex-ea50 moire and aliasing
 
Moved it to another thread.

Robert Moran January 20th, 2013 09:54 AM

Re: Sony nex-ea50 moire and aliasing
 
Age really is mind over matter. I build websites and the competition I deal with are people in their 20's. Never stop learning new stuff is key as most of us old timers have have recreated their professions many times over. :)

Serggio Lamas October 4th, 2014 01:10 AM

Re: Sony nex-ea50 moire and aliasing
 
I have done several tests in all profiles hd, and the only profile that displays no moire and aliasing is the 1080 25p, & 720 50p
all other profiles hd at 18 the moire and aliasing is miserable,relative to 1080 50p with 1080 50i in 1080 50i I get a lot more moire and aliasing.

D.X. Lin October 4th, 2014 09:50 AM

Re: Sony nex-ea50 moire and aliasing
 
1080 60P/50P will always show more moire and aliasing on this camera. it can not be totally fixed
but can be reduced by turning the "detail" setting to -7 then add sharpness in post.

Serggio Lamas October 4th, 2014 09:53 AM

Re: Sony nex-ea50 moire and aliasing
 
in PP3 the detail is 0,without profile how to set detail -7?

D.X. Lin October 4th, 2014 09:59 AM

Re: Sony nex-ea50 moire and aliasing
 
opposite?

1080 30p in NTSC
1080 25P in PAL
these are the best format to record on this camera
with less moire and aliasing than shooting 1080p 50p

Serggio Lamas October 4th, 2014 10:10 AM

Re: Sony nex-ea50 moire and aliasing
 
then why Sony adds other formats, for shop front to sell,for marketing?
1080 25P in PAL is better on this camera, but it not has smooth movement when the camera moves left right up and down, I have several complaints from customers in this format, in dvd.
Friends in the area to ask about this camera to buy and prevents them to go to another company, and I was like I do not I'll never Sony camera in my hands.
By this demo
I saw I bought the camera,but no but nothing, and I do not answer questions on what lenses have use in this video
which was done promotion the sony.

D.X. Lin October 4th, 2014 10:36 AM

Re: Sony nex-ea50 moire and aliasing
 
you need to look into manual on how to set picture profile
set detail -7 you will see a huge improvement and you will have to add sharpness in post

Serggio Lamas October 4th, 2014 10:41 AM

Re: Sony nex-ea50 moire and aliasing
 
thanks but no need to see the manual to set picture profile detail -7,i like to use without any profile.
need to go in other company brand for camera.
D.X Lin The above video you saw; Send me something similar with your camera, if the ea50 be the same or similar to what you see without a trace moire and aliasing.

Shortly before the camera showed me quite suddenly but quite severe problems in moire and aliasing, and only came back with the familiar moire and aliasing, nevertheless put the camera in Sony without being able to detect what originated from this problem, with the tests made Sony in the camera returned to me with the sensor has dirt on him,not ashamed of little.how to post here photo from sensor to see what service they did,mind when I sent the camera sensor was clean.

Serggio Lamas October 5th, 2014 07:22 AM

Re: Sony nex-ea50 moire and aliasing
 
SOS!!!!!!
The problem with moire and aliasing is come back today,going crazy......I have to shoot video the wedding to evening,going crazy.....searching for another cameraman for the wedding for the second time, I lost three marriages + shame for my store,this time uploading some video to see the problem that my camera,Services by the Sony sent the camera can not detect the problem.in which the one comes and another goes,will require a new camera from Sony.

The problem that shows me is so intense that I have not even done a job for delivery to customer. Will upload some link to see the problem, and tell me all users of this camera if you could work with this tradition the acute problems.
Please download the mts not play from browser.
1---- https://www.dropbox.com/s/heum1zfd2w...00215.MTS?dl=0
2---- https://www.dropbox.com/s/h1idlm9tfr...00220.MTS?dl=0
3---- https://www.dropbox.com/s/u9n5por7j2...00221.MTS?dl=0
4---- https://www.dropbox.com/s/vl3osr4ap4...00222.MTS?dl=0
5---- https://www.dropbox.com/s/7dpzz5o9as...00223.MTS?dl=0
the image from sensor
1---- https://www.dropbox.com/s/i24hviycgz..._5093.jpg?dl=0
2---- https://www.dropbox.com/s/5yxiuucweo..._5094.CR2?dl=0
this dirt had not the sensor when the camera send in service, nevertheless He wrote better, but not that better than other ea50 I've seen, from the beginning to buy something that does not stump me, this shows problems we see I do 1-4 times reset the camera and not returned, only when you WANT this will settle down after a while but the problem appears again without being able to identify when self's coming back.

Marlon Martins October 5th, 2014 12:58 PM

Re: Sony nex-ea50 moire and aliasing
 
the links are truncated. can't download.

Serggio Lamas October 5th, 2014 01:06 PM

Re: Sony nex-ea50 moire and aliasing
 
is OK now for download

Marlon Martins October 5th, 2014 01:14 PM

Re: Sony nex-ea50 moire and aliasing
 
the links with "...." got some words cut out. just need to post the links properly ;)

only the first one is complete

Serggio Lamas October 5th, 2014 01:22 PM

Re: Sony nex-ea50 moire and aliasing
 
the previous video is with kit lens 18-200 pz.
These two are by tamron 17-50 .2.8 no vc.and take it from 4 meters in 17 and 50 in out

add two more similar videos, today
Please download the mts not play from browser.
before the problem
https://www.dropbox.com/s/borx6xghtn...00193.MTS?dl=0
with the problem
https://www.dropbox.com/s/9d8jy5o0vi...00237.MTS?dl=0

you see that it is normal;I do not think


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