September 23, 2014, 12:27:39 AM

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Messages - Marsu42

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1
Lighting / Re: Basic help: How does Flash exposure compensation works
« on: September 22, 2014, 05:19:45 PM »
Maybe you should get ML to look into it  ;)
I already did! Two problems here:
  • the ml devs don't care about flash (and they mostly shoot live view...) so the flash part is not fully reverse engineered.
  • the flash firmware seems to be an "plug-in part" from another Canon dev team that is shared amongst cameras. The result is that the flash props are kind of dodgy and are not accessible all the time with external flashes. I'm still working on at least triggering two pre-set fec levels with a button...

At least ML unlocks fec levels above and below the standard Canon +-3 for internal pop-up and some external flashes, unfortunately my 600rt is not among them.

2
Lighting / Re: Basic help: How does Flash exposure compensation works
« on: September 22, 2014, 03:58:48 PM »
Are you sure the pre-flash is disabled in M mode?

Um, I was until you wrote it still triggered you optical slaves, but this could be a simply sync problem :-o ... why would the flash want to pre-flash in m mode?

Actually I read the method to max the flash power in a smart book, so I never really checked. But I hope pdb as "Mr. Flash" will give a definite answer on this w/o me checking...

3
Why not post this on the Magic Lantern forum?

Actually the best way is to use the ML *bugtracker* and not open yet another forum post: https://bitbucket.org/hudson/magic-lantern/issues?status=new&status=open

Be sure that it's really a ML bug, i.e. start the camera w/o ML (SET keypress or card w/o ML installed) and try to reproduce!

Last not least, do read this or the ML devs will tell you to do so: http://freecode.com/articles/how-to-report-bugs-effectively

4
Photography Technique / Re: Square or not?
« on: September 22, 2014, 03:29:50 PM »
Square. People will think you shot it on a Hasselblad.

I agree for this shot, and I tried to do more square crops myself. Unfortunately, I found that at least for what I shoot square never really fits the scene - or am I simply too set on ~2:3 by decades of viewing the world through the native 35mm ratio?

5
Lighting / Re: Basic help: How does Flash exposure compensation works
« on: September 22, 2014, 03:21:51 PM »
Just as an aside, ETTL can go much lower than min Manual flash output. Manual is limited to 1/64 in the case of the 90EX, or 1/128 flash power with other models, but ETTL can output less than that.

I know ... and that's why it took me so long to find out that at least with the 6d's ettl metering the flash in some situations fails to reach the lower limit and it can be a good idea to set 1/128 manually. ymmv with real cameras and good metering though.

The problem is that there's now way (that I know of) to find out what power level(s) ettl chose, there's no tag in the image file or log on the flashes... so quickly switching m <-> ettl is always tricky. Or are there any tricks available?

6
Many people obsess over things that no-one else sees.

Good point there, it's just that cropping/rotating is one of the few things I'd say other people do see.

Maybe not consciously like in "nice golden ratio there" or "excellent horizon level", but imho this tends to make the difference between snapshot and real photography quality. But of course I could be wrong and I'm really making too much fuzz about nothing ...

7
EOS Bodies - For Stills / Re: POLL: What's more important, gps or wifi?
« on: September 22, 2014, 03:13:06 PM »
Agreed.  I'm more than a bit fed up with Canon's absurd little game of haphazardly putting different random subsets of features in each of their cameras.

Cannot will agree to this :-)

If they had it their way, it would be like in the good ol' times just xxxd (joe sixpack) - xxd (enthusiast) - 1dx (sports) + 1ds (studio).  Given this alternative, I'm rather happy with Canon's feature juggling because that's the only way they dared to produce a ff 6d I can afford :-o

8
Lighting / Re: Basic help: How does Flash exposure compensation works
« on: September 22, 2014, 02:52:38 PM »
In general ettl is ingenious to quickly dial in an ambient/object ratio. Not that the "correct" exposure at fec 0 often looks over-flashed, at least to me - you might want to start at -1 to get less broken shots. Raising shadows with fill flash in postprocessing is doable, but trying a over-flashed shot is a pita.

But even i set camera exposure to +1 and FEC to -3. Flash fires strongly resulting to not fire on the next shot..

The downside of ettl is that it relies on your camera's metering, so it's a good idea do be able to do both - ettl and m flash if you shoot the same or similar scenes again.

Note that there are two situations where ettl hurts:
  • To get *maximum* flash output, set the flash to m and full power. This way you don't waste power on the pre-flash which will only result in the camera telling the flash "dial to 11" anyway. The same applies if you want to do as many consecutive flashes as possible on lower output
  • Automatic flash power might not be able to get the *minimal* flash output. If your subject is too near, and zooming the flash out, fanning and whatnot still over-flashes try to use m flash at min. power setting.

Last not least, flash is indeed one of the subjects where reading a book or good website is really a good idea - unlike a lot of other photography stuff you can simply figure out reading/posting some forum threads and trial & error.

9
Photography Technique / Re: POLL: Did you peak and what did you do about it?
« on: September 22, 2014, 02:35:08 PM »
Somewhere in all this lays the "eye". It's 100% sense, plus 100% feel, and, I dare to say, almost 0% sensor.

I know the effect, on some days I start shooting and everything is just crappy. But usually I'm too eager than to just admit it and put the camera away, at least for some hours :-\. I hope I'll learn to focus faster in the future. In these situations having some "fallback" camera setup (auto-iso with fast shutter speed vs. shake, deeper dof vs missed focus, ...) helps because once I have at least one good shot, it usually gets better.

10
I've found it useful to try and look for other non-horizontal aspects, like curved shores, but also particularly trees. In the past, I often found that I'd level what I thought was the horizon, but then the trees, once I saw them in post, were clearly tilted.

I know this issue and even posted a thread about being horizontally challenged.

My problem remains a) with uwa shot with curved horizon, and b) when *nothing* is straight in the scene: "horizon" tilted because it's the side of a slope, trees skewed to various side and object not standing/lying/... straight either. In this case, the grid viewfinder screen helps to align all these aspects equally wrong (which might result in just the right angle), but often I simply have to shoot first and think later how to rotate in post.

11
EOS Bodies - For Stills / Re: POLL: What's more important, gps or wifi?
« on: September 21, 2014, 10:37:40 AM »
* RT-EX radio flash commander
Since Canon is not willing and/or able to .. I will not buy anything from them. It's that simple.

This is really one thing I'm disappointed about, probably they have the same transmission problems as with wifi in a metal body (5d3/5d4/7d2) and just for product policy's sake won't have the lesser plastic models (6d,70d) have a built-in rt controller either :-o

12
EOS Bodies / Re: Sample Images From the EOS 7D Mark II
« on: September 21, 2014, 10:35:06 AM »
Nevertheless, from what I see and jrista wrote above, Canon crop still is nothing to write home about vs. ff, but neither are the Sony/Nikon sensors on higher iso settings. So basically if you've got some money to spend, it's still 5d3+expensive tele lenses...
The main advantage of APS-C is lower cost.  I'm sure I've read that somewhere...   ;)
Moreover, the size and weight of the camera and lens.

But you good people forgot Canon broke the legacy linear product strategy with placing the small and light ff 6d into their lineup :-). As for lenses, if you don't need to carry a f2.8 brick around the newer f4 zooms or non-L IS primes are small and don't have a lot of weight.

Btw other "main" advantages of aps-c include macro shooting and of course reach, so personally I would find choosing between the 6d+7d2 combination or a real 5d3 tough.

13
EOS Bodies / Re: Sample Images From the EOS 7D Mark II
« on: September 21, 2014, 08:26:00 AM »
Many people didn't bother with the 70D because the IQ difference was minimal. I wouldn't be surprised if some of the exact same people are now singing the praises of the almost identical 7DII lol

But minimal + minimal = noticeable in real life shooting which makes 7d->7d2 attractive but not 7d->70d (and there's the fw crippling like the removal of spot af).

Nevertheless, from what I see and jrista wrote above, Canon crop still is nothing to write home about vs. ff, but neither are the Sony/Nikon sensors on higher iso settings. So basically if you've got some money to spend, it's still 5d3+expensive tele lenses or 7d2+6d to cover both and have two camera bodies around.

14
Photography Technique / Re: POLL: Did you peak and what did you do about it?
« on: September 21, 2014, 08:17:59 AM »
I look at my shots from the past and chuckle.

Maybe we should do a thread with comparisons "my shots from 3 years ago and now" :-) ... but I guess very few people would dare to participate.

I know when I look at my oldest shots, the "keepers" from back then would be deleted right in camera now and not even make it to postprocessing.  Everything was horrible, content, framing and tech (iso 1250?!). I haven't peaked by now, but I guess it's normal progress gets less spectacular the longer you shoot.

15
EOS Bodies - For Stills / Re: POLL: What's more important, gps or wifi?
« on: September 21, 2014, 06:12:41 AM »
Hopefully Canon and any other camera manufacturer is implementing the possibility to switch those gimmicks OFF.

Of course you can switch off wifi & gps (the 6d has even a wifi indicator on the top lcd which is a complete waste of space). The catch with the 6d and probably 7d2 is just that gps stays on on camera off to continue the track log - so you have to remember to switch it on/off manually each time (or use Magic Lantern).

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