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Forgive me if this is already public knowledge, but I believe I may have found a solution to a problem that has been bugging me for quite some time.

Until now, I had not been able to shoot in crop mode at 2.5k (2560x1090) Dual ISO for longer than 30-40 seconds. I would always get the frame skipped error after that time.

Today, however, I stumbled across a setting that lets me shoot continuously (as long as Im using fast enough cards with spanning turned on):



The bottleneck apparently lies with the histogram setting. Switching it to off apparently removes enough processor overhead or card throughput (or both?) to shoot continuously:
Before


After



I eventually get a green icon. I dont think I've ever seen that before at this resolution. Especially with dual iso:



Thoughts? Anyone else experience this or is this a "new thing"?

Sidebar: Is 53 degrees Celsius a bad thing?

Here are the rest of my settings:

@DeafEye, any thoughts on monitoring while shooting 2.5k continuous with Hacked Preview? Is there a workaround for being able to see what is actually happening on screen?

Thanks

Hi all. I hate to bump an old thread. I just wanted to see if anyone found a solution for monitoring while shooting continuous in 2.5k crop mode.

I've had to use hacked liveview in order to shoot continuously, but that basically turns freezes the lcd and I can't really see what I'm filming.

Is there any way around this while still shooting continuous?

Thanks

@DeafEye, I sent you a PM. Did you get it? Thanks

Ottoga, thanks for the extensive feedback. I appreciate it.

I will try to implement these changes as soon as possible!

Thanks again

Dual ISO Processor will traverse all folders within a specified root, find CR2 or DNG image files, and batch process them using cr2hdr.




The application is multi-threaded, and allows as many threads as your number of CPU cores. The user is also free to decrease the number of threads in use, just in case they are using the system for other work. They can increase them back to the max allowed, whenever they please.

This application has everything I love about batch/long process applications: A friendly GUI, log files, Progress bars and Time Remaining/Elapsed counters.

It's open source, so feel free to either suggest improvements or build them yourself!

Source Repository:
https://github.com/layibabalola/Dual-ISO-Processor

Application DOWNLOAD:
https://github.com/layibabalola/Dual-ISO-Processor/releases

I agree mlRAWViewer is amazing and my tool of choice. i hope badland makes it open source and development continues.

Is there a nightly build for the iso research functionality? I need the special branch in order to use ISO 66 correct?

Thanks

I grade in Lightroom also. I'll never use Resolve or Premiere again for grading. Lightroom is just that amazing. Especially with such a thick negative like dual iso.

Deafeye can you elaborate  on that? How can you tell I'm exposing for highlights? I actually thought I was exposing to the right. Shall I post the original DNGs so we can take a look at the histogram?

Can you post an image that looks like it used ETTR and dual iso?

Thanks

Levas & DeafEye, I believe the latest version of cr2hdr (Nov 24, 2015) is automatically 20-bit:
https://builds.magiclantern.fm/jenkins/view/Other%20tasks/job/cr2hdr-20bit/

Anyhow, the app allows the user to point to the folder where cr2hdr is located so any version will work. The above is the version I tested with though.

It's a Windows Application. Perhaps someone can do a Mac Port if they feel its useful. Not sure what other folks are using to batch process Dual ISO images. I used to use the VB Script that was posted here a while back, but I wanted something powerful enough to process an entire directory structure and give diagnostic info and such.

MLVFS didnt work for me too well when I tried it. Im stil lan MLVRawViewer (and MLVMystic if any files give me trouble) guy.

MLProducer didnt play nice with me. I wanted to go from MLV to DNG. It seemed to want to convert to intermediary video formats. Maybe it was user error on my part....

Appreciate it DeafEye. I got tired of the Lightroom plugin, so I use cr2hdr and an application I created myself to batch process folders of CR2s and DNGs (I've called it Dual ISO Processor). I will create a new thread and release the app to the community as open source by the end of this week.

What made you ask? Did something seem unconventional about what I was doing?

Thanks HappyBlack.

5D Mark 3. Canon L glass.

Detailed camera fstop and shutter specs are on the flickr info if you click the image and go to the picture page.

Thanks for the feedback guys!

I'll do more research on this...

Interesting. Didnt know about fstop affecting things. What would you say is an ideal fstop?

I'm using 3x crop with 1:1 pixel ratio also.

Thanks

Just to follow up, I see basically ZERO moire or aliasing in the below video. What gives?:
https://www.youtube.com/watch?v=hwTxM6W0D-s

THIS video had a LOT of aliasing however. Event with the 3x zoom and 2.5k:
https://www.youtube.com/watch?v=ZXqwequSBgE

Why the difference?

Yes I am indeed using a 5d Mark 3 and shooting in 3x crop. I havent tried reduce fringing since i am using lightroom.

I am using a Tokina 11-16mm in addition to 3x crop.

Any other ideas?

Thanks!

YouTube link. Watch as original/1440p:
http://youtu.be/Z2qC2CmCEJo

Right click and save as

Hello all. Im experiencing aliasing and moire on my dual iso videos in areas with fine detail.

I've tried to work around this by using the 3x zoom and 2560x1090 video resolution, but this doesnt seem to help much.

Any ideas?

Example video here:
http://www.mentatduke.com/videos/AliasingExample.m4v

Thanks

Thanks very much for sharing your findings!

Desktop has 64gb RAM - Win7 Ultimate
Laptop has 16gb RAM - Win 7 Enterprise

What could be a potential bus bottleneck? I've tried usb drive, raid IDE drives, raid SSD drive, and non-raid OS drive.
Both have same results.

I've also processed same sets of files to same performance delta.

dmilligan, how many seconds per file does it take you to do about 700 frames? Care to do a quick test? I'm curious if you are also around 2 seconds....

Thanks for the quick response.

Hello all.

Im experiencing some performance issues with cr2hdr on a specific machine. It runs poorly on the powerful machine (i7-4930K 3.4GHz overclocked to 4.5GHz)  and excellently on less powerful laptop (i7-2720QM 2.2GHz).

Laptop: 798 files take 1544 secs (26 min) or 2 seconds per file

Desktop: 722 files take 12180 secs (132 min) or 17 seconds per file

Is there any reason why this program would run differently on a more powerful system?

Number of cores/virtual cores, etc?

I'd appreciate some help troubleshooting if possible.

Thanks much

I'd like to use this in combination with dual ISO.

Is there a nightly build version of this so I dont have to attempt to try to build this myself?

Thanks