July 25, 2014, 12:58:51 PM

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Messages - Marsu42

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16
Canon General / Re: New Speedlite Coming? [CR2]
« on: July 16, 2014, 07:57:23 PM »
Let me rephrase that- how much cheaper will Canon be willing to price the 4X0RT anyway? (considering Canon's general inclination towards R&D roi and profit)

You don't want to hear my answer, I'm Mr. "Canon is too greedy" around here. Though I have to admit the 600rt is a very good piece of equipment, they have to get back their r&d investment and Yongnuo just showed us how not to do it with the terrible st-e3 transmitter clone.

17
Canon General / Re: New Speedlite Coming? [CR2]
« on: July 16, 2014, 06:34:14 PM »
And how much cheaper can they make the 4X0RT anyway?

Much cheaper, look at third party flashes, even if you allow for a higher Canon quality. Flash technology isn't space age anymore - it's just about how much r&d roi and profit Canon wants to have.

If the 4??-EX-RT came out tomorrow I might buy four in a year or so, but then again I'd probably just get more 600's.

One advantage of having the same flash models is that if you use m flash, you get more of a feeling how much power is required - this alone is a reason I'd stay with the 600rt if I can afford it. Mixing my 600rt with my old 430ex always ends up in a struggle concerning different power output and recycling times. You big boys with studio strobes probably have more experience mixing light sources though.

18
Software & Accessories / Re: Post processing workflow
« on: July 16, 2014, 06:09:16 PM »
And all the workflows i found differed from each other, irregardless of the gear used, the type of photographs, or the subjects. Every workflow looks like a "magic recipe".

That's because every photographer is different, and the workflow reflects this. This isn't some empty wisdom, but it's really worth it to figure out what *you* want to do in which steps and then adapt your workflow accordingly. LR is a great tool for this with smart collections and keywords. Beware, this takes time.

What are the advantages and disadvantages in doing any of this operations during raw conversion?

A complete raw workflow is non_destructive, a biiiiiiig advantage since you can always go back any step in your history and don't waste disk space on storing rendered images. So if possible keep the raw workflow as long as possible, and only do the final steps on the rendered image.

Why are there so many different functions and algorithms for sharpening? And why should i use one over the others in any given situation?

You can spend the rest of your life researching this issue - it's a tradeoff hassle vs. quality. If you process a shot that will be printed on a large wall and get paid $10k for it, it's worth it to really fine-tune sharpening and noise reduction. If you downsize - which you will do most of the time - it's a wash and you won't see much of a difference in the final exported image.

Is there a book (or several) that can help me quench this thirst for knowledge?

Probably :-) ... but it pays to experiment for yourself to develop *your* style. Also look at video tutorials, either free (yt) or commercial like Lynda.

19
EOS Bodies / Re: Canon 6D N
« on: July 16, 2014, 06:00:15 PM »
A company trying to do it themselves is pretty insane.

Correct me if I'm wrong - but I guess Canon is licensing some ip core with sdk and then either puts it inside one of their custom chips or adds another chip on its own (probably together with gps). If that's so, then Canon dryos doesn't do anything different than Linux would do: interface with the wifi ip core and do some high level requests like "please connect to xyz" or "transfer image abc"?

20
EOS Bodies - For Stills / Re: 60d results - the bird feeder
« on: July 16, 2014, 02:37:30 PM »
Overall, I was happy with the pictures.  I did have a lot of OOF shots that I will chalk up to my mistake, but I have also noticed that other shots I've taken with other lenses seem soft too.  I'll investigate this more in the coming weeks.  I hope I don't have to have my lenses/camera calibrated, but if I do then I do.

The 60d is a great camera for macro or tele shots, and for that kind of money it's a steal.

The one problem is the missing af micro adjustment (thanks, Canon!) so if slightly oof shots occur you never know if it was the phase af normal variance or a systematic error. I'd advise you to get hold of a camera with afma (for example the 70d) and then test your lens(es). If there is a large afma requirement, you can get it adjusted by Canon service. The 70-200L is such a premium lens so that it's probably worth the hassle.

21
Technical Support / Re: Stop exposure at overexposed pixel threshold
« on: July 16, 2014, 02:33:49 PM »
Pixels can Overexpose due to factors other than true exposure.  e.g. Image noise and hot pixels could cause your camera to underexpose.

Of course the software can account for that: Magic Lantern does it with the ettr function, you can set a threshold of allowed clipping. Problem is that it only after reading the data from the sensor (i.e. in live view or analyzing a shot just taken) and thus cannot cope with fireworks.

22
Canon General / Re: New Speedlite Coming? [CR2]
« on: July 16, 2014, 02:13:59 PM »
here is a sample photo that

You should clean your sensor or use LR's healing brush :-p

I can't wait. I hope this is the 4?0EX-RT everyone is expecting.  I'd love to get three flashes and a controller for under $1k.

Don't hold your breach: The 600rt price has dropped some and it's included all Canon deals, while the 440ex (or whatever the name) is new = price premium. It might even have some additional gimmicks like continuous video light that many people won't use but that sill drives up the price. If it's €300, I'd rather get a €400 full 600rt...

23
Technical Support / Re: Stop exposure at overexposed pixel threshold
« on: July 16, 2014, 09:51:58 AM »
Hence, I was thinking that maybe an exposure time based on how many pixels are reaching their overexposed status during the actual shooting would be a working approach.

For that, you'd need the ability to read information from the sensor before the actual data readout, afaik that's not possible with the current design. But I already wished for this myself, "why not just engage bulb mode and let the camera figure out the rest?".

So for fireworks, you basically have to resort to trial & error and try to be on the safe side to prevent white clipping or the colors are gone. This is tricky for short fireworks w/o previous experience, when in doubt look at shots around the net and check what expo settings they were using. Last new years eve, I was using 60sec @iso200 with f8.

Few days ago I was trying to make a timelapse of a firework show. I went for a fixed exposure in every shot: well, it turns out fireworks can have a great and sudden dynamic range, so half of the pics are exposed just right, but the other half is way overexposed.

In general for timelapses use Magic Lantern, it's got built-in expo ramping and deflickering for this very purpose.

For fireworks,  it depends if you also want part of the dark background visible. In that case, you want as much dynamic range as you can grab, so use Magic Lantern's dual_iso module - if exposing @iso100 it should also result in a nice blur effect for the fireworks.

24
EOS Bodies / Re: Canon 6D N
« on: July 15, 2014, 05:38:15 PM »
The first thing that I'd do if I were designing the next camera would be to use DRYOS solely for the guts of the camera operation (if at all).

Oh no, I hope they keep using dryos, after all this is what makes Magic Lantern run :-) ... even with a oss os, they most likely would have to scratch a lot of their work.  From a ML programer's perspective, dryos seems to be pretty ok esp. considering Canon developed it on their own to avoid license fees. Of course with the catch that Canon doesn't release an sdk and you have to find and figure out all functions for yourself, but that's not the os' fault.

As for needing a rtos or not, I cannot quite say (though I guess the ML devs could) - but I figure there is a good reason they use it other than some workarounds. Linux has a considerable overhead and for running on embedded you have to customize it all the time (see Android or routers running Linux). And you really don't need Linux on your EOS, you can already play Sokoban and Arkanoid with Magic Lantern :->

25
Software & Accessories / Re: Unable to edit Canon 600D Images on DPP4
« on: July 15, 2014, 04:09:04 AM »
Is 600D not supported on DPP4 ?


I'm usually not trying to sound too smarta**ish, but using search would have been quicker than to make this screenshot :-p ... yes, dpp4 doesn't support your outdated model. yet. probably.

http://www.canonrumors.com/forum/index.php?topic=21395

26
I've never tried a 6D but a few weeks ago I saw some photos posted in the sports section and said if anyone questioned the 6D's capabilities I'd refer to them to that thread...

It's not about getting *some* shots right, it's about reliability and the keeper rate. The 6d's tracking is medicore, though as written above it depends on the movement type and it's easier with large targets in bright light so you can use all af points (as there's only the choice between 1 and 11).

I've got top-notch running horses shots from the 6d, and I could say they're taken with a 5d3 or 1dx and everyone would believe it. That's why posting some nice sports shots doesn't mean anything unless he/she states how many shots were missed. For some sports, this should be ok as the scenes get repeated so if the 6d misses you can just try again. But for mission-critical work like tracking a "once in a lifetime" wedding ceremony - no, I'd rather use one shot mode thank you very much :-o

27
Software & Accessories / Re: DxO Optics Pro 9 released
« on: July 14, 2014, 11:08:56 AM »
The only major thing I've noticed about the 9.5 release is that PRIME has gotten a little slower.  I don't know if they've been able to pull out a bit more quality, but it does seem slower than it was when they first released it.  I'm happy to wait for it given the results, of course.

Let me/us know if you discover anything or read about changes in the PRIME output. Or is there already some tutorial available when PRIME makes sense?

I tried it with a DxO trial version back then and discovered that it takes 15min to process a 20mp file on my laptop so I didn't have the time to experiment with it. In hindsight, the output didn't seem to be always that superior to Lightroom/ACR *if* not going for 100% output resolution, but downsizing and sharpening a bit. PRIME is certainly overkill for your average iso3200 shot. It might be better for extremely noisy shots like iso 12800 underexposed - it's just that I don't do these anyway.

For some of my shots, PRIME turned out to be rather mushy, my preference in these cases would be to keep a little "nice" 6D noise in LR as it looks better to me. Probably the same reason mpeg4 asp videos sometimes look better than mpeg4 avc with stronger deblocking.

28
EOS Bodies / Re: Canon 6D N
« on: July 14, 2014, 08:12:37 AM »
Is Wi-Fi on the 6D as bad as on the G1X??

Once you manage to get around the braindead Canon limitation (you must install a virtual wifi access point on your pc to connect the camera) it's quite ok.

The limitation is that obviously without a real antenna the connection strength is limited when a wall or a long distance is involved, and even @100% speed I'd rather put the sd card into my laptop than to wait for the wifi transfer.

However " gift horse and such" ... and I recon it's invaluable once you use it for certain wildlife setups or quick blog uploads for journalism. For longer runtime, an external power source or grip is advisable though to extend the battery time.

29
EOS Bodies / Re: Canon 6D N
« on: July 13, 2014, 05:11:04 AM »
As for A-GPS, it does significantly speed acquisition by prefetching the almanac and ephemeris data, but there's no good way to do that with a camera, because cameras don't have cell hardware and aren't typically tethered to anything with an Internet connection.

Afaik there are two "agps", one mobile camera type which uses the cell information and one offline type which simply pre-computes the satellite paths so the tracker doesn't need to search for all of them. For the latter you
could simply upload the data via usb/wifi or put some agps file on the card, afaik some trackers do this

However the 6d gets a fix rather quickly, so I don't think there is a real need esp. since gps doesn't need much power so you can simply leave it on. Magic Lantern has an option to turn it off automatically on camera of an then on again which saves battery btw, and a "hot start" gets a fix even quicker.

30
Software & Accessories / Re: DxO Optics Pro 9 released
« on: July 13, 2014, 05:05:55 AM »
Not really, they have had FilmPack plugins for LR and CS for years.

Ok, thanks for the information, I was thinking of their refusal to import raw dng files (Adobe standard) and the position they take in their forums on this issue - Adobe? What's that? :-p

Does Lightroom have face detection?  I find that to be a handy feature, a few clicks and I can build a slideshow/movie of one of my kids, for example...

I'm positive Adobe will keep adding features with their upcoming releases, for example focus peaking (Capture One has it) - LR6 is about to be released, and they won't stop there. I do hope Apple replacement app will be competitive though, any manufacturer having a monopoly is never good from the users' perspective.

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