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Messages - garry23

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2176
General Help Q&A / MLU and bracketing
« on: February 15, 2013, 01:27:32 PM »
When I take a sequence of brackets, say using auto detect, and have MLU engaged, my 50D seems to engage and disengage MLU every shot.

Whereas if I put the camera in LV and use bracketing, the mirror remains up throughout the sequence, is all I hear is the shutter operating.

Is there a way to get the mirror to go up and remain up throughout a bracketing sequence when  NOT in LV ?

2177
Archived scripts / Re: PicoC scripting API
« on: January 26, 2013, 03:55:36 PM »
Alex

Some of the CHDK community have sent time pushing the limits. For instance, as I say, I use a histo call that covers 12bits, and it could be extended to 14bit. It is achieved by sampling  the sensor RAW. Also all the exposure calls work in APEX 96 space.

What is was suggesting is that at least we look at where CHDK is as we construct an ML requirements set of functions. For instance, I know one of the CHDK community has added in functions in CHDK few sensor level exposure reading such that in camera  holly grail timelapse can be smoothly achieved.

Obviously some of the ML functions will be unique to ML, eg mirror up functions, if possible, however, any will and I suggest should be common.

Bottom line: whatever the ML. Developers, such as yourself, can do will be great; IMHO there could be beneficial if the ML community took stock of the CHDK scripting status, especially in the 1.2 developers trunk.

2178
Archived scripts / Re: PicoC scripting API
« on: January 26, 2013, 03:15:27 PM »
Regarding extending scripting functions/calls, as a CHDK user as well as a ML user, would it be a good start to emulate some of the CHDK scripting functionality. For instance, I have an autobracketing script that runs in CHDK where i access a CHDK histogram call to get the histogram at a 12bit level, ie the level my S95 and G11 operates at. This page gives an example of the functions http://chdk.wikia.com/wiki/CHDK_Scripting_Cross_Reference_Page

Just a thought, as the CHDK community have done a lot for scripting of P&S cameras, so why reinvent the wheel, lets bootstrap!

2179
Tutorials and Creative Uses / Re: stacking images for astro use
« on: December 21, 2012, 02:54:31 PM »
I don't know about ML's HDR video mode, as I would have thought the data content would be much lower than shooting in RAW. But I may be wrong.

I have used the ML intervalometer to take multiple images of star fields and then used software to stack the images with the intention of reducing the hi ISO noise content, ie I was shooting at an ISO of 1600 or 3200.

G

2180
Feature Requests / Re: raw histogramm
« on: December 18, 2012, 08:54:50 PM »
ETTR is an emotive subject. The fact our camera meters to 'midde gray' does mean that we are not fully exploiting the data capture in RAW, ie the binning of data is not linear in RAW. This is why we use exposure compensation.

I believe ETTR has its maximum value when you are capturing a dynamic range that is addressed by a single image.  What we don't want to do in this situation is clip any highlights with 'structure' in them, ie details we wish to see. I will ignore speculars.

As the histogram and blinkies are calculated from an over sampled JPEG, ie a few percent of the RAW data, it is often hit and miss that we have pushed as much data to the right as possible. My simple understanding is that with ETTR we are increasing the s/n at a given level, ie noise stays about the same, but we 'just' gather more signal.

For scenes with a wider dynamic range we have bracketing.

Bottom line: I believe a RAW based measure of highlight clipping would take ML to another high.

Garry

2181
Feature Requests / Re: raw histogramm
« on: December 18, 2012, 03:06:15 PM »
For those of us who favor ETTR capture this would be a great feature. In addition, if the actual histogram presentation can not be made more readable, ie bigger, I wonder if ML could have the option to present the right most quarter only.

At the moment I use blinkies to estimate the ETTR exposure, but of course this is on a highly JPEGed image.

Bottom line: I wonder if ML could support the ETTR shooter?

Garry

2182
Feature Requests / Re: Interface
« on: December 14, 2012, 05:07:04 PM »
Just to be clear my suggestion is only to use the external device as a means to change ML settings, ie increase readability of the ML menus in the field.

Unfortunately I am not a programmer.

Cheers

Garry

2183
Feature Requests / Interface
« on: December 14, 2012, 02:25:24 PM »
A simple idea, that I recognize may not be possible. But here goes. Would it be possible to add an iPod, iPhone or android to ML as an external input/output interface for ML.

That is you can use your iPhone, say, as the way to change ML settings, ie more readable than the LCD screen.

Cheers

Garry

2184
Share Your Photos / Re: Auto bracketing
« on: December 01, 2012, 07:49:57 PM »
Francis

Like you I strive for a natural looking image.

I guess there are two ways of 'looking' at HDR-touched imagery. First HDR as a style. Second as a technique to overcome the limitations of our camera sensors to capture life's dynamic range.

I am one who tries to use HDR to overcome my camera's limitations.

As I say, Canon users are very fortunate to have ML, especially the auto-Bracketing capability.

Cheers

Garry



2185
Share Your Photos / Auto bracketing
« on: December 01, 2012, 04:21:16 PM »
I now virtually only use the auto bracketing setting for my HDR captures. Of course I use a Tripod and I am not too critical to motion. If I need to capture a quicker sequence I will revert to the in camera AEB and high speed, and accept I am imited to 3 shots (50D)..

All these images were taken with the 50D in ML auto HDR mode:

http://grayheron.smugmug.com/Landscapes/Kasha-Katuwe-Tent-Rocks/26654412_hTH9fn#!i=2229550236&k=nrg77xR

You can't beat ML!

Cheers

Garry

2186
Feature Requests / Re: GPS
« on: November 19, 2012, 07:16:25 PM »
With the GPS adapter you get the geo info of the shot you took.

But the new canon GPS unit only works with the very latest camera, ie 5d kk iii

Cheers

Garry

2187
Feature Requests / GPS
« on: November 19, 2012, 04:37:26 PM »
Forgive if this has been requested before: I looked and could not see any reference.

With the release of the Canon GPS adaptor, I wonder if Magic Lantern coud be used to extract the relevant EXIF info for those 'older' cameras that can not access the GPS info directly.

Cheers

Garry

2188
General Help Q&A / Re: 50D users: how are you getting on?
« on: November 01, 2012, 03:18:11 PM »
50D24fps?

Can not seem to reply to your PM.

I'm afraid I don't do video, although I do timelapse.

I proved to myself that ML does allow me to record video on the 50D, but that was it: one test video.

Sorry I can't help.

Cheers

Garry


Hi Garry23!  I was wondering if you had been successful in using the latest v2.3 of Magic Lantern to record 1080 24P video with your 50D.  If you don't do video, no worries.  But if you have experience with this particular combination of camera and frame rate (23.97 fps in progressive), please do share.

Thanks

2189
General Help Q&A / Re: 50D users: how are you getting on?
« on: October 31, 2012, 09:45:22 PM »
Weldr

I can assure you that not only does ML work on the 50D, but that you will be able to things you couldn't before. My main/only use of ML is to give me full bracketing control for subsequent HDR processing. I also use the WB setting in ML.

I also have a Promote Remote to extend my bracketing. But ML allows me to leave this at home and travel light.

The bracketing in ML is also different to the Promote as ML has a killer feature: the auto bracket mode.

If you need any 50D specific help please don't hesitate to contact me.

Cheers

Garry

2190
General Help Q&A / Re: MLU and bracketing
« on: October 31, 2012, 07:13:35 PM »
A1ex

I have read all the requests and I personally don't relate to them. Saving time taking brackets is important if you are handholding, ie faster the better. On my 50D I use the 3-bracket canon bracketing when handholding as I can shoot at 6fps.

As I said, I use the LV 'trick' when on a tripod and most of my shots are not moving, eg churches..

Thanks for your usual quick comments and over and out on this one, as I ave ML and LV.

cheers

Garry

2191
General Help Q&A / Re: MLU and bracketing
« on: October 31, 2012, 07:00:26 PM »
A1ex.

You are right, but most of us that bracket on a tripod are not that worried about 'saving' a second or so in capture. The main thing is to get tack sharp image capture.

I am more than happy to push the LV button before and after accessing ML.

It was just an idea.

Cheers

Garry

2192
General Help Q&A / MLU and bracketing
« on: October 31, 2012, 06:16:36 PM »
I have been using the latest nightly build on my 50D to try out the new aperture bracketing: and I like it.

This post is about a refinement that I think is missing in ML, but could make the 'bracketeers' life a lot easier (unless I'm missing something).

When bracketing, on a tripod, the usual 'best practice' is mirror lockup, however, when I try this through the normal ML menu, with the canon MLU on or off, the MLU function seems to only work for each image. In other words the MLU is operating individually for every bracket.

The way round this is to put the camera in LV and then take the ML-enabled brackets. BTW I mostly use the auto feature now as I don't need to 'worry' about the EV range.

With the camera in LV mode, ML only operates the shutter, ie the mirror does not move, ie remaining up until LV is turned off.

So, the thought is: would it be possible to put in a feature that enables LV mode before ML takes the requested series of brackets and then takes the camera out of LV mode at the end of the sequence capture. In other words the bracketeer gets the possibility of capturing the most vibration free images.

Cheers

Garry

2193
General Help Q&A / Re: Probably a stupid question - what is Magic Lantern
« on: October 13, 2012, 03:56:42 AM »
Dear wtspc

I have a 50D and a Promote Remote. Like you I bought the Promote to extend the camera control, especially as I am an HDR biased photographer. 

I have a very simple view of the benefit of ML vs the Promote. If you have the Promote get ML, if you have ML think carefully about getting the Promote.

The Promote will give you greater and smoother control when doing timelapses, and of course Promote is not a video controller.

I have no hesitation in saying that ML scores on bracketing for subsequent HDR processing. Why? Because you need no additional cables or hardware than your camera. You can travel light.

Additionally, ML bracketing has what I think is a killer feature: auto HDR mode. That is ML decides how many brackets to ensure the full dynamic range is captured. I usually use the auto HDR mode these days. I do not need to do any metering to decide how many brackets I need.

Bottom line: get ML in your 5D, as you are an HDR bracketeer!

Cheers

Garry

2194
General Help Q&A / Re: 60D HDR problems, shaky pic
« on: September 23, 2012, 06:51:19 PM »
Although I don't have a 60D I can assure you that the 50D and ML works fine. I would be surprised if mirror lockup is a cause of your problems. I have been out shooting today and tend to use the auto HDR mode these days as I don't need to think about the dynamic range foe scene. I have proved the auto moe up to 17 captured images in a bracket.

Bottom line: if you are in manual mode (exposure and focus) and on a tripod you should have no issues.

2195
General Help Q&A / 50D users: how are you getting on?
« on: August 27, 2012, 11:35:35 PM »
 I hope it is ok to ask how are 50D users getting on with 2.3, especially bramping?

Cheers

Garry

2196
General Help Q&A / Re: Bulb ramping
« on: August 17, 2012, 04:43:32 PM »
As another 50d owner I also hae been experimenting with bramping in 2.3 and like others have come across the 'setting the right parameters' problem.

I hope someone in the know can provide some advice regarding bramp speeds. I have read elsewhere that at sunset the ev will change about 2ev per 10 min. Maybe this gives a guidance figure for speed bramp?

Bottom line looking forward to some guidance.

Ps have any of te 50d owners worked out how to move the cursor up and down the calibration curve. When I use te small wheel it does not move very far, ie I can not get it to move fully up and down te curve.

Cheers

Garry

2197
General Help Q&A / Time lapse setting up
« on: August 16, 2012, 04:41:45 PM »
Tried my first bulb ramping yesterday with some success. However I have a couple of questions I hope the experts can help me with.

In post I noticed that, in addition to a few iOS jumps, as expected, parts of the exposure curve show very erratic changed in exposure, ie jumps between frames. Is this an ml algorithm feature or my settings?

Also when I did the calibration step I got a nice s curve but I had difficulty moving the 'cursor' up and down the curve. I have a 50d and could only use the small wheel and then it only moved over part of the curve.  Once again does anyone have any ideas if this 'just' reflects ml or is it me!

Cheers

Garry

2198
General Help Q&A / Re: I need serious HELP in HDR processing!
« on: July 29, 2012, 04:55:16 PM »
For Edwarda and others, here is my humble take on HDR and ML.

First let me say I have a CHDKed G11 and a S95 and, of course, a MLed D50. I can honestly say the latest ML (RC2.3) is an incredible addition to the 50D (and the other cameras ML works on). My interests are HDR and hence the addition of CHDK and ML, which allows extended bracketing, which is the cornerstone of the HDR process, takes me to a great place, where I can focus (pun) on composition and not worry about bracketing.

I would also say that ML2.3 takes bracketing to where it is now nearly a perfect in-camera process. Why do I say this, because without the ML AutoHDR feature you need to first work out the number of brackets to cover the scene. I could go with the 50D default brackets (three) and hope I capture the range. I could also measure the range (with a spot meter, say) and calculate the number of brackets and manually adjust the camera to capture additional AEB triplets. Or I could use some technology, like, Promote Remote (which I do with a spot meter, but this cost money!).

With AutoHDR in ML you can travel light (with your light travel carbon-fibre tripod) and know you will be able to capture the required number if images for the dynamics of the scene. It simply is the best thing that has happened to still photographers who can access ML.
Second, I would suggest you not ‘waste time’ and try to Enfuse in camera. You could, but why? It is like having a Ferrari and using it to tow a caravan. That is use ML for what it is really good at, ie to help you capture the brackets that you will later post process on your computer. With a camera in your hand (on a tripod) focus (that pun again) on capturing images, not processing images.

I do use Enfuse, also Photomatix and HDR Efex Pro. I access all these through Ligthroom 4.1. I would suggest to anyone wishing to explore HDR, first get LR4.1 running on their computer. I say this recognising the Apple folk could go the Aperture route. However, LR works better for me, as an HDR biased photographer, as it not only allows you to have a fully-in-LR  Enfuse plugin , not only does it seamlessly interface with HDR Efex Pro and Photomatix, but, and this is the clincher, it allows you to process 32-bit TIFFs. So, with Photomatix you have the ability to ‘merge’ your brackets into a 32-bit TIFF and post process this 32-bit TIFF in LR with all the LR capability.

Bottom line: everyone needs to find their own workflow. Mine is to use ML to capture my brackets (most of the time now using AutoHDR setting), then ingest them into LR, then carry out base corrections (eg WB, although the ML scene-based WB capability is a great help), export these brackets to Photomatix (say), create a 32-bit TIFF (that automatically gets imported into LR through a watched folder), process the HDR in Photomatix (if I want to), reimport (auto process) back into LR as a 16-bit (sic) TIFF for further post processing. In other words, using this workflow, I end up with a 16 and 32 bit TIFF file to further post process in LR.

Cheers

Garry

2199
General Help Q&A / Re: MagicZoom
« on: July 29, 2012, 04:18:42 PM »
Alex

Thanks for the confirmation: I thought the 50D was the 'problem'.

BTW I can confirm (so far) that RC2.3 seems to have eliminated the 'hanging battery' problem on my 50D.

I also religiously follow the 'wait before taking the card out' advice.

Cheers

Garry

2200
General Help Q&A / MagicZoom
« on: July 29, 2012, 02:56:12 AM »
Using rc2.3 with great success on my 50D but I can not find how to enable or show any focus help, eg green bars or spilt screen.

Could someone point me in te right direction?

Cheers

Garry

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