August 27, 2014, 07:07:42 AM

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Messages - Marsu42

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1
EOS Bodies / Re: 6D MKII
« on: August 26, 2014, 02:29:49 PM »
It would be a much more attractive option if it had the joystick for focus point selection. I honestly like a lot of what the current 6D offers.

Personally, I'd say a joystick for 11 af points (10 non-crosspoint, one only crosspoint at f4+) is overkill - these few points are selected quickly with the multicontroller. Coming from the 60d, I feel very at home with the right-hand only layout of the 6d.

2
EOS Bodies / Re: Exmor vs DualISO
« on: August 26, 2014, 05:31:37 AM »
The last thing I want to show is that there is another type of artifacting that can occur in situations where you push the secondary ISO very high, for this example 3200, and you have thin lines (i.e. small branches or wires) running almost parallel to the sensor rows.

In theory, this can happen at any iso combination. The way the cr2hdr postprocessing utility works, it tries to interpolate the scanlines and reconstruct missing data in the the shadows and highlights that is only available in one half-picture. Well, if detail happens to be just in one scanline and is clipped, that's that. But Alex (the lead ML programmer) might refine cr2hdr even more to minimize the inherent problems.

But compared to the difference between a vanilla 5D3 and the A7 and this becomes a pretty amazing result.

Thanks for the comparison! Fyi, the 6d works even better with dual iso since the dynamic range is a bit higher and it has less banding noise when pulling the shadows. I use dual_iso more and more at iso 100/800 these days, gaining +2.5ev dynamic range with nearly no iq drawback on the 6d.

Unfortunately, in real life you cannot reduce the comparison to tech aspects. The workflow problems of dual_iso vs. a native high dr sensor are in my experience:
  • it's harder to check for focus in camera because the image is interlaced
  • it's impossible to check for colors because they are screwed before processing with cr2hdr
  • postprocessing hassle, esp. time required for cr2hdr processing
  • dual file storage because you want to keep around the original cr2 in case cr2hdr receives further improvements
  • results usually needs manual wb (esp. tint) setting even though cr2hdr tries to autodetect it



3
Software & Accessories / Re: CR2 files corrupted
« on: August 26, 2014, 05:15:14 AM »
i've also used the transcend recover x software successfully after reformating a card after a wedding ceremony... now THAT was a sphinter twitching moment....

LOL, I guess we all can vividly imagine like *that* felt :-> ... this is one of the reasons I'd really rather have a dual-slot 5d3 than a single-slot 6d, Murphy's Law dictates that the card will wait to fail until a critical moment :-o

4
Software & Accessories / Re: CR2 files corrupted
« on: August 26, 2014, 04:09:56 AM »
I soon realised what I'd done, and managed to recover a load of CR2 files with the correct dates and times taken on (using Stellar recovery software), but it seems as though they are all corrupt. The file sizes look like other CR2's I've had before - 22 - 24Mb.

A similar disaster happened to me just the day before yesterday, for the first time I have to day. The first recovery (usually very good) software I tried was unsuccessful and the cr2 files just contained garbage data - sd cards seem to need different handling than hard disks.

I then succeeded with "Raise Data Recovery" for fat, after a deep scan of the sd card it managed to save all cr2 files intact. If you didn't write to the card after formatting it might very well for you the same way. Good luck!

Edit: Unlike other first-time posters writing about data recovery software, this post is not spam :->

5
Software & Accessories / Re: Jpeg image sizes?
« on: August 26, 2014, 03:52:51 AM »
DPI does not affect jpeg file size. Number of pixels does, as does content (more detail bigger files), noise, iso (because of the noise), quality setting etc.
Makes sense, I have no excuse for my senility ;)

But I can understand the notion because pixel processing software like LR seems to make makes a large fuss about dpi settings, but it only matters for import into desktop publishing and is irrelevant for other print/screen purposes.

6
I agree and fortunately it wasn't a great shot anyways

Imho it always pays to be on eye level with the animal, at least I find these most attractive or it has got this "zoo look".

Predators with front-facing eyes seem to be detected if large enough in the frame...so I guess an enhanced version of that may be the ultimate solution...

First, of course I'm happy 1dx users face similar problems as 60d/6d people :-> and I agree that the current software is an absolute disgrace to the computing power available in today's dslrs.

I'm very confident with mirrorless (= the image processing sensor can see the sensor image all the time) we'll see much more powerful autotetection algorithms for various popular shot types, but alas, good ol' conservative Canon most likely won't be the first to implement it.

7
Software & Accessories / Re: Jpeg image sizes?
« on: August 25, 2014, 04:54:34 PM »
Thanks for that, I guess that all software will use a similar scale

Definitely not, and there are even some really weird scales like LR/ACR that isn't linear at all. See: http://regex.info/blog/lightroom-goodies/jpeg-quality

Also unknown to some, there is another quality factor that has a noticeable impact on the filesize - subsampling. Some software changes it from medium quality 2x1 to hq 1x1 on very low jpeg compression like 90+, that's when you see a strange filesize bumb. See: http://www.impulseadventure.com/photo/chroma-subsampling.html

8
Yep and it's not as visible at web resolution, but is painfully obvious on screen and it prints :(

I'd even double-check that, I recently viewed some of my old shots on a small lcd (played back to the camera) and immediately saw which shots had a front- or backfocus from the eyes. Probably people who aren't really looking for it won't actively notice, but even at web size if can make a difference as to said "brilliance" factor. In your example shot my view is drawn away from the eyes to the nose because there's so much detail there while the ears are clearly out of focus.

9
EOS Bodies / Re: 6D MKII
« on: August 25, 2014, 02:42:12 PM »
My guess based on the current 6D is that after the 5D IV gets introduced, the 5D III goes away for a few months or a year, and then much of the base camera of the 5D III gets re-introduced as the 6D II.

I very much doubt this because there is an *absolute* "good enough" to shoot most scenes. The current 6d already does ok for a lot of them, but there's still a lot of incentive to upgrade to the "real deal" 5d3. If the 5d3 is the baseline, Canon would pull a rabbit out of the hat to make 6d2(=5d3)->5d4 as attractive.

Much more likely they cripple the 6d2 where it hurts like they removed spot af from 7d->70d (even though it's the same af array), they're rather good at that :-p

10
mackguyver, good illustration.  I'm interested in your thoughts on what is happening when spot focus is apparently too broad to allow one to nail the eyes.

I can help here for the rest of us with cheaper af system: If the af point is too large for the area you want to af, it's purely random where the focus ends up. Solution: Shoot more frames, then delete. This is what I usually do when focusing on an animal (snake, horse, ...) directly looking towards me with the eyes just vertical half moon shape.

I had to post this one from my last shoot - LOL - the nose is perfectly in focus, but the eyes and eyelashes, well let's just say I missed...

The problem with missing the eyes is that the shot loses the brilliance, though this is often only realizable when comparing one in-focus and one slightly out of focus shot side by side. And selecting such a deep dof that nose and eyes are in focus - even if iso noise is no problem - kills the "3d" look.

The standard AF sensor in the 1D X / 5DIII is too big to get an accurate lock on those beady eyes, at least in my experience.

By the way: Did you people ever look at the latest 70d's af points size? Since Canon removed spot af from 7d->70d I would guess that using the 70d with the scenes in discussion is very frustrating indeed.

If I had more time

Right, and since this usually isn't the case I came up with the "wrong afma" idea. Problem here is that you really have to do a lot of trial & error, pref. on a known distance, and I don't have the enthusiasm to do this right now ... that's why I was hoping someone else already did it :-p

11
Lenses / Re: lifespan of IS motor?
« on: August 25, 2014, 03:54:39 AM »
Most people accept that their car may not be trouble free for less than 5 year.

That's why I don't have a car and go by bike and public transport (it's easy to do around where I live).

Why do people expect their camera and lens to do better than that???

I guess for amateurs it's wishful thinking because the price for a good dslr kit is very high in comparison what you could do with the money for other recreations like travel... so it has to last, doesn't it?

Thus one interesting question is avoided: Wouldn't it be more clever to by Rebel cameras with cheaper 3rd party lenses, and when they break simply upgrade to the better current model? Certainly not an option for professional use, but less worry about gear damage, theft or wear and for most purposes about the same result :-.o

12
Site Information / Re: NEW ___ Sell Your Gear - Beta Test
« on: August 24, 2014, 05:01:09 PM »
I did find a feature called "allow Boards to be Ignored".  I turned it on.  You can now check the boards you wish to ignore in your profile.

Great, that's it, thanks!

13
EOS Bodies / Re: 6D MKII
« on: August 24, 2014, 03:33:22 AM »
Well here is my wish list for the 6D MKII its not long:

Keep wishing, my guess is that the current 6d will stay around for quite a while like it is. The longer Canon sells it, the more profit they make after getting back their r&d money and I guess longer production also means lower production price. If anything, they'll lower the 6d1's price further instead of replacing it, the cheap construction means it's meant to be flexible for further discounts.

And the thing keeps selling and will continue to do so as it's essentially a good sensor in something build around it that doesn't matter too much. Unless there is a serious upgrade in sensor tech, imho Canon won't replace it. And if they do a leap in tech, they'll first put it into their flagship cameras (7d, 1d, 5d), so until it trickles down to the 6d it'll be quite a while.

The last possibility for pressure to upgrade 6d1->6d2 would be Nikon or Sony, but Canon has demonstrated that they don't really care about the competition's specs as long as they've got a similarly priced offer at all: Many people are tied to Canon by their gear or years of usability experience with this system.

14
Site Information / Re: NEW ___ Sell Your Gear - Beta Test
« on: August 24, 2014, 03:24:45 AM »
Only a small handful of users have asked to try out the buy and sell forum, at this point, I'm wondering if the effort already expended was time wasted.

I know the board software is rather limited (but much nice to look at than your standard vbb, btw)... but anyway, here's a wish:

I usually use the "Show unread posts since last visit" option to scan for new threads that could benefit from my wisdom and deep photography insight :->. Currently, this is being spammed by "17-40L" and the like threads that are only "for sale" posts very few people will be interested in.

Could you please:
a) add an option not to let this subforum show up on the  "Show unread posts since last visit" list, or ideally let the users select what subforums they're interested in at all
b) if this is not possible: Add a mandatory prefix "For sale" to posts in this subforum so they are recognizable at first sight.
c) remove this subforum, personally I don't really think its necessary esp. since the CR memebers seem the be spread around the globe and I'm unlikely to buy used gear from another country.

Thanks for considering!

15
EOS Bodies / Re: Canon 6D True High ISO King?
« on: August 24, 2014, 03:19:10 AM »
Now, I'm not really interested in yet another 6d vs 5d3 debate, but it's hard not to reply :-p ... but I'll try to let this be my last comment on this specific issue.

Is it logical to just take a camera based on your needs ... Again, if you think 6D isn't the "best" for you then why choose it?

Oh my, that's good ol' CR "Just get a 1dx, 70-200L2, 24-70L2 and be done with it" :-> ... I'm rather amazed about these questions, but fyi I can think of 1200 reasons with an € label attached :-o

You said "it's the complete package that counts".  Now, that's not being logical.

On the contrary, though I admit this was not very precise. I define "complete package" as Canon marketing and statistics would define it, i.e. what what user groups willing how many $$$ to spend need... and then they do or modify the specs.

Imho there is a rather linear "complete package" scale, Rebel "shoot your family on birthdays" group have different needs than the enthusiasts around here. For example looking at the posts, users who buy a ff also want some sort of sealing and pref. a 100% vf - so Canon uses these pieces of information to assemble packages like "6d good sensor / lacking sealing / cropped vf" and "5d3 has it all". These are just examples from the top of my head, but you get the picture.

5d3 vs 6d is a tough choice for me, if I were given either to use regularly for free and could not sell I'm not sure what I would pick.

For me it wasn't because I'm $$$ limited and bodies loose their price much quicker than lenses. I keep commenting on the 6d's af shortcomings as I'm annoyed Canon crippled it beyond what would have been required to separate if from the 5d3.

But truth is, *if* the shot is in focus (and that's not difficult with landscape and such) it has terrific iq and significantly less banding than the 5d3, and at the end of the day people aren't interested in how many shots were lost but only how good the one shot left is. So if I don't lose the shot of my life because the 6d's af fails I'd rather spend the 6d->5d3 difference on lenses, because that's what you see (through).

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