July 23, 2014, 12:34:31 PM

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Messages - Marsu42

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1
Software & Accessories / Re: Noise reduction in Lightroom
« on: July 20, 2014, 02:23:44 PM »
If I process a RAW-Image in Lightroom, I will get more noise than from a in-camera-processed (or from DPP) image. Which settings do you recommend to get the same noise reduction in Lightroom like from Canon? And how much would you sharpen?


I won't go into nr/sharpening details, but there are good tutorials around and I'd advise you look at this (yes, it's commercial, but well worth it): http://www.lynda.com/Lightroom-tutorials/Noise-Reduction-Sharpening-Lightroom-Photoshop/142976-2.html

As for Lightroom, my advice is to use this plugin and figure out good settings with a tradeoff noise/detail you personally like and that's adequate for your purpose (screen, print, ...). The good thing about this plugin is that it takes into consideration if you have raised the exposure which a simple filter for iso values will miss: http://regex.info/blog/lightroom-goodies/bulk-develop

2
Photography Technique / Re: Help: lightning photography?
« on: July 18, 2014, 04:08:26 PM »
How do you like the tamron 150-600? I've owned a sigma 150-500 for a couple of years now, but am fiending over the additional 100mm the tammy offers...

I'd advice to check the reviews how long these zooms *actually* are, the nominal label doesn't mean much and esp. 3rd party manufacturers like to cheat here. Also the longer the lens gets, the less real life difference 100mm means unless you plan to multiply the effect with a tc.

3
Photography Technique / Re: Help: lightning photography?
« on: July 18, 2014, 05:07:19 AM »
Could anyone please let me know what sort of settings would be best on which camera and which lens, as we are scheduled for more lightning tonight.


There's a dedicated Magic Lantern motion detect module for this very purpose, see their site magiclantern.fm and google "magic lantern lighting" => results like http://www.dpreview.com/articles/7002555087/lightning-photography-with-magic-lantern

4
Canon General / Re: New Speedlite Coming? [CR2]
« on: July 17, 2014, 05:13:04 PM »
"Do not fire the modeling flash more than 10 consecutive times. If you fire the modeling flash 10 consecutive times, allow the Speedlite to rest for at least 10 min. to avoid overheating and damaging the flash head." Emphasis mine.

I dunno, if I keep pressing the modelling flash it simply stops working until the flash has cooled down. Am I using a special version of the 600rt or have I been just lucky so far. I never read manuals :-p and only touch them to come up with occasional smug comments :->

Which is why I think it won't be a 4X0RT.  Canon will keep the 600exRT as the entry fee if you want to play the integrated RT eTTL game. I'm going to put my money on a thoroughly uninteresting new flash.  Color me a skeptic.

Or it's going to be the 600rt replacement 666ex-rt with the new ettl-3 protocol:
* remote zoom
* second curtain remote
* battery indicator
* fec with wheel in m flash mode w/o button press (fw bug)
* one button group masks (feature on the yn st-e3 clone)

5
Software & Accessories / Re: Post processing workflow
« on: July 17, 2014, 05:06:39 PM »
Me, I'd learn to get-it-right in camera.

In that case, you're probably not doing wildlife - most of the time, you cannot control the lighting and have only so many seconds to decide what the correct settings are. Me, I'd rather have a shot that local adjustments in postprocessing than no shot at all.

2. Global Contrast - again, this affects other adjustments - I typically add a touch to most shots, but more if there's flare, fog, or other things that have reduced contrast, unless that's the look I want

In LR, I raise global contrast only to remove haze, and then mostly with the brush. Just adding contrast doesn't look good to my eye, it's nice with curves and black/white clipping control.

5. Color - using HSL- if there is a color cast left after WB adjustments, I correct it here. 

That's interesting, I never tried that - what exact color casts do you target in hsl mode?

6
Canon General / Re: New Speedlite Coming? [CR2]
« on: July 17, 2014, 10:07:18 AM »
Yep, battery charge indicator would be useful. I suspect if Canon were truthful, they'd tell you that recycle time is the de facto battery indicator.

I have absolutely no clue why there is no battery meter - probably a technical problem because the power flux is so dynamic it's hard to get a good reading on the charge (and because all batteries have different discharge curves)?

Btw Canon *does* say the recycle time is the battery meter, as far as I remember it's there in the manual in the cfn description to show the slave "charge ready" status either by the red blinky or just the small light on the back.

An overheat warning might also be helpful to avoid damaging the flash.

Um, the flash get disabled if it's running too hot, doesn't it?

7
EOS Bodies - For Stills / Re: 60d results - the bird feeder
« on: July 17, 2014, 05:34:16 AM »
The great think about chickadees is that you don't need hunting blinds to get close.... all you need are some sunflower seeds and a lens that focuses within half of an arm's length....

Ooooooh, these are really sweet :-) !!!

My previous camera, T1i, I didn't have any issues with any of my lenses. I'm betting it's me.

Probably, Canon lenses are usually adjusted just fine and f2.8 isn't as critical as 1.2. But if you can there's  peace of mind after making sure. Note that every camera body needs different afma adjustment values, so if your ti1 worked fine your 60d might not.

Last not least, afma is not a magic bullet. Newer cameras have different settings for the long and wide end of zooms, but it's still not sufficient since afma also changes with the subject *distance*. Afaik the newest Sigma lenses take this into account while Canon (still) doesn't.

8
EOS Bodies / Re: Canon 6D N
« on: July 17, 2014, 03:51:17 AM »
Then again, I've worked both at Apple and at an embedded Linux startup, so it's possible that I'm just a bit biased against RTOSes.  :)

Interesting observations, though I (I never did rtos programing) like to add this theory: It's easier to debug and build a reliably system because if it works once then it'll work every time sine timing is fixed and this no problem. Do Nikon and/or Sony and other companies use multitasking non-rtos designs in their cameras?

Btw I don't find the Canon wifi implementation *that* horrible, video/wifi is bothersome but I don't do this, my main issue is that you cannot connect to a laptop in client mode but have to setup a virtual ap on the computer.

9
Canon General / Re: New Speedlite Coming? [CR2]
« on: July 17, 2014, 03:42:01 AM »
I hope they give the new flash head the same range of rotation as the 600EX-RT.  The head of the 430EX has a limited range of rotation.

There are only so many things how you can cripple a flash so people who don't need the "pro" features like ext. power supply and fast recycle time still can be upsold to the most expensive model. Imho Canon won't change a running system, and the extended flexibility of the head is one of the things that appeals to everyone.

The other thing the "small" flash probably won't have is the great 600rt usabilty simply because the flash is smaller, so if using one on-hotshoe or on-bracket flash the 600rt will still be better unless you perfer the in-camera menu (if you manage to find it).

10
Canon General / Re: New Speedlite Coming? [CR2]
« on: July 16, 2014, 10:14:49 PM »
I think Canon will NOT price the 4X0RT low enough that too many will be inclined to settle for that instead of another 600 (especially if refurbished).

On the other hand, their latest releases (70d, 16-35L-IS) were rather reasonably priced - so you never know, even with Canon :-p

11
Software & Accessories / Re: Post processing workflow
« on: July 16, 2014, 10:13:40 PM »
Some photogs simply don't want to know anything about post and some of snapshooters just want the magic solution (click and poof).

Thank the maker for that, or otherwise it would be even more difficult to separate oneself from the crowd now that every joe sixpack can buy a ff dslr in the next radio shack (including me) :-)

12
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.

13
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.

14
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.

15
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"?

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