Magic Lantern Forum

Using Magic Lantern => General Help Q&A => Topic started by: fisyon on December 20, 2014, 04:50:13 PM

Title: 600D Video Digital Zoom
Post by: fisyon on December 20, 2014, 04:50:13 PM
hi all,

i am a newbie in the forum. 
i can use digital zoom function of 600d (display+zoom in/out, 3x to 10x) by original firmware.
also i can use ML for video recording by CBR x 0.5 (because my SDcard is slow one so cbr 1x is problematic)
i was using both of them at ML 2.3 (base?) version until i updated it by latest nightly build.
now, i can't use digital zoom more than 3x. it says "zoom greater than 3x is disabled"
i don't know why disabled / how to enable or i am not sure if that is a bug

please help

installed version of ML:
nightly.2014oct07.600d102

please excuse my english which i am not good at it
Title: Re: 600D Video Digital Zoom
Post by: Satis on December 20, 2014, 08:04:59 PM
There is no point in using digital magnification over 3x. What 3x does is taking the middle part of the sensors and using the central pixels only - therefore there is no image quality loss.
Any zoom over 3x is completely pointless as it magnifies already existing information only - it means loss in image quality, thus it should be avoided.
If you NEED to zoom into the video you can do it in post.
Title: Re: 600D Video Digital Zoom
Post by: fisyon on December 21, 2014, 12:03:42 AM
Quote from: Satis on December 20, 2014, 08:04:59 PM
There is no point in using digital magnification over 3x. What 3x does is taking the middle part of the sensors and using the central pixels only - therefore there is no image quality loss.
Any zoom over 3x is completely pointless as it magnifies already existing information only - it means loss in image quality, thus it should be avoided.
If you NEED to zoom into the video you can do it in post.

a few reasons why i need it:
* smoothly zooming actual scene by not caring quality loss
* continuously checking/retaining fine focus
* reduced need of post processing resources (old/inadequate PC)

i don't know why/how ML  decides to disable an option despite me...  :o
Title: Re: 600D Video Digital Zoom
Post by: dmilligan on December 21, 2014, 12:36:15 AM
1. Do it in post. ML is not a replacement for post processing software

2. Use magic zoom or focus peaking

3. See #1