FS700 With Macro Lens Issue at DVinfo.net
DV Info Net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony Digital Cinema Camera Systems > Sony NXCAM NEX-FS700 CineAlta

Sony NXCAM NEX-FS700 CineAlta
4K EXMOR sensor with SDI, slow-motion recording.

Reply
 
Thread Tools Search this Thread
Old July 8th, 2014, 10:02 AM   #1
New Boot
 
Join Date: Jun 2014
Location: Stoke On Trent
Posts: 9
FS700 With Macro Lens Issue

Hey guys

First time poster here and hope you can help.

I recently upgraded from a Panasonic AC-160 to a Sony FS700 with a couple of Canon lenses and so far everything has been fantastic. Obviously with such a change in camera my footage looks leaps and bounds forward on what I was providing in the past.

Although last week I hit my first problem..... I film a lot of mobile phones for one particular client and when I was using my new Macro lens I was getting a strange line across the screen.

Now I have been filming phones for a few years now and obviously have had to change my shutter speed to adapt to the the refresh rate and stop strobing but no matter what I do this problem doesnt seem to go away.

I am shooting with a FS700, EF-E Mount Speedbooster with a Canon EF 100mm f2.8L Macro lens.

Whenever I get below a focus of 2 feet the line appears: imgur: the simple image sharer

I have tried lots of different settings and as I said above 2 feet its fine and with my other lens (24-70mm) I dont see the line. Am I being really stupid and it is a refresh issue or is there something that can be done?

Any help/suggestions appreciated

Cheers
Chris Slade is offline   Reply With Quote
Old July 8th, 2014, 10:13 AM   #2
Obstreperous Rex
 
Join Date: Jan 2001
Location: San Marcos, TX
Posts: 27,366
Images: 513
Re: FS700 With Macro Lens Issue

Hmm... looks like a refresh issue to my uneducated eye. How much trouble would it be to shoot beyond two feet and crop in post? Welcome to DVi by the way.
__________________
CH

Search DV Info Net | 20 years of DVi | ...Tuesday is Soylent Green Day!
Chris Hurd is offline   Reply With Quote
Old July 8th, 2014, 11:35 AM   #3
New Boot
 
Join Date: Jun 2014
Location: Stoke On Trent
Posts: 9
Re: FS700 With Macro Lens Issue

Sorry I thought I should add what the exact settings where

1080P, 25 FPS, 1/60th shutter speed.

These are the same settings I used on the Panasonic and obviously I know its a completely different camera/lens I had no issues like this so there must be something I am not understanding here.

Yeah, I could do that Chris as it certainly is an option but I bought the macro to give me the ability to get incredibly close to the phone to really show off the detail. Seems I was wrong, oops!
Chris Slade is offline   Reply With Quote
Old July 8th, 2014, 11:39 AM   #4
Inner Circle
 
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,322
Re: FS700 With Macro Lens Issue

Do the lines move or are they stationary?

Can you post a short video clip in addition to the still image?
__________________
http://www.LandYachtMedia.com
Chris Medico is offline   Reply With Quote
Old July 8th, 2014, 11:46 AM   #5
New Boot
 
Join Date: Jun 2014
Location: Stoke On Trent
Posts: 9
Re: FS700 With Macro Lens Issue

Yep, give me a n hour or so and I'll upload a short video

Cheers guys
Chris Slade is offline   Reply With Quote
Old July 8th, 2014, 12:08 PM   #6
New Boot
 
Join Date: Jun 2014
Location: Stoke On Trent
Posts: 9
Re: FS700 With Macro Lens Issue


Link attached. Any other info, questions, suggestions please go ahead :)
Chris Slade is offline   Reply With Quote
Old July 8th, 2014, 05:50 PM   #7
Regular Crew
 
Join Date: Mar 2010
Location: Las Vegas, NV
Posts: 85
Re: FS700 With Macro Lens Issue

Quote:
Originally Posted by Chris Slade View Post
Yep, give me a n hour or so and I'll upload a short video

Cheers guys
Try it out in sun with something that isn't electronic. You need to start eliminating things. It could be something weird with the LCD display on the phone at that magnification.
John Mastrogiacomo is offline   Reply With Quote
Old July 9th, 2014, 10:01 AM   #8
Regular Crew
 
Join Date: Oct 2012
Location: London, United Kingdom
Posts: 45
Re: FS700 With Macro Lens Issue

It doesn't look like a screen refresh issue to me, it looks more like a polarisation thing - it may be related to the OLFP in the camera, I dunno. You could try shooting through a polariser, see if that makes a difference.
__________________
DoP, London, UK
www.colinelves.com
Colin Elves is offline   Reply With Quote
Old July 9th, 2014, 04:50 PM   #9
Inner Circle
 
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,322
Re: FS700 With Macro Lens Issue

That is coming from the polarizing screen on the LCD.
__________________
http://www.LandYachtMedia.com
Chris Medico is offline   Reply With Quote
Old July 10th, 2014, 01:24 AM   #10
New Boot
 
Join Date: Jun 2014
Location: Stoke On Trent
Posts: 9
Re: FS700 With Macro Lens Issue

Hey guys

Thats a good shout. I never thought of that.

Are there any particular things I should look at for a polariser or should I just buy a multi pack of different strengths and see which one works best?
Chris Slade is offline   Reply With Quote
Old July 10th, 2014, 12:09 PM   #11
Regular Crew
 
Join Date: Oct 2012
Location: London, United Kingdom
Posts: 45
Re: FS700 With Macro Lens Issue

Polarisers don't really come in different strengths (well, they do, but it generally reflects brand quality more than anything) but if you have a pair of polarising sunglasses you could try shooting through them. But, if I'm honest, I suspect it will make it worse rather than help.

Just out if interest - that's not some sort of glasses free 3D screen on that phone is it? I'm just wondering why it might do that. I shot a macro shot of a mobile (iPhone) for a viral end of last year and had no problems with the screen.

Also, have you tied varying the angle you shoot it at? Eg straight down, more acute etc
__________________
DoP, London, UK
www.colinelves.com
Colin Elves is offline   Reply With Quote
Old July 11th, 2014, 07:42 AM   #12
New Boot
 
Join Date: Jun 2014
Location: Stoke On Trent
Posts: 9
Re: FS700 With Macro Lens Issue

Nope just a regular Sony Xperia Z2.

I'll do some more tests on this weekend and get back to you. In the process of picking up a polariser to see what effect it has
Chris Slade is offline   Reply With Quote
Old July 14th, 2014, 12:38 PM   #13
Regular Crew
 
Join Date: Oct 2012
Location: London, United Kingdom
Posts: 45
Re: FS700 With Macro Lens Issue

Anything to report? It's be interesting to know if you found a solution in case I encounter it myself at some point.
__________________
DoP, London, UK
www.colinelves.com
Colin Elves is offline   Reply With Quote
Old July 15th, 2014, 03:42 AM   #14
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Re: FS700 With Macro Lens Issue

Looks like aliasing and moiré to me. As you get closer to the screen the camera is able to resolve the individual pixels and this can lead to aliasing and moiré. The phones in the images are not perfectly parallel with the camera so the actual point of sharp focus will be a narrow band across the phone's display. If you fractionally de-focus the picture does it go away or move forwards/backwards along with the focus point? A touch of diffusion with a soft focus filter would fix it. I guess you previous camera wasn't sharp enough to show this effect up ;-)
__________________
Alister Chapman, Film-Maker/Stormchaser http://www.xdcam-user.com/alisters-blog/ My XDCAM site and blog. http://www.hurricane-rig.com
Alister Chapman is offline   Reply With Quote
Old July 16th, 2014, 10:32 AM   #15
Regular Crew
 
Join Date: Oct 2012
Location: London, United Kingdom
Posts: 45
Re: FS700 With Macro Lens Issue

good call Alister! Looking at it again, I think you're right.
__________________
DoP, London, UK
www.colinelves.com
Colin Elves is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony Digital Cinema Camera Systems > Sony NXCAM NEX-FS700 CineAlta

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 08:18 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network