November 26, 2014, 07:20:24 PM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Marsu42

Pages: 1 [2] 3 4 ... 342
16
Technical Support / Re: 7D mark II battery drain
« on: Today at 03:15:24 AM »
If Tamron wriggle about it saying the body must be at fault then my reply will be then why doesn't the 150-600 do it!

Last I remembered, Tamron service seems to be helpful exchanging a lens or updating the fw - and their repair time at least where I live is faster than Canon (w/o cps). It's just that they cannot test their lenses without access to camera bodies before official release.

17
Technical Support / Re: 7D mark II battery drain
« on: Today at 02:27:55 AM »
I will submit these findings to both Canon and Tamron and see what they come up with.

Esp. the answer from Canon will be worth a snigger, if they reply at all to a 3rd party compatibility issue at all. Did you check you have a Tamron lens with the updated firmware? This information is around somewhere in the quoted threads, you can have a look at your serial number and compare.

18
Lenses / Re: 70-200 2.8 is ii vs new 100-400
« on: November 25, 2014, 05:26:10 PM »
No one has to read any thread, and it their choice to ignore the obvious, but sometimes you feel people should consult the topics list first before repeating the well covered topics.

With this kind of attitude, you'll get frantic around here :-p ... best practice is never to use the search box and start a "17-40L vs 16-35L" thread every full hour.

Most important, if you've got a question cross-post it to every photog forum on the internet, let lots of people try to give advice, and never get back to it ... which reminds me I didn't want to reply to 1st poster's posts anymore :-\ ... which doesn't mean this op won't respond, ymmv.

19
EOS Bodies - For Stills / Re: Is there any reason to shoot sRGB????
« on: November 25, 2014, 05:10:54 PM »
... for the real deal use Magic Lantern and the full raw histogram.
Gee, that's neat. Too bad the ML chaps stopped developing for the 30D.  :(

You're actually on a 30d as your only camera?! in that case, my "Mr. Budget" award passes from me to you.

20
EOS Bodies - For Stills / Re: Is there any reason to shoot sRGB????
« on: November 25, 2014, 05:08:33 PM »
I'm really not trying to offend you, and I'm sorry if some other thread mood spills over here.

1. the histogram is based on this setting, with adobe rgb you get a better representation
What histogram? Oh, you mean the one that the camera shows you AFTER you've taken the picture.
What histogram are you using?

2. in every cr2 there's a full jpeg thumbnail with the color space selected.
Of which the purpose is, beside for generating the utterly useless histogram?
It's extremely useful for quick sorting and browsing as a lot of software browsers use it - rendering the raw data takes a lot of time.

And in any case you should calibrate the monitor and use color management even with an srgb model.
So when will you pop over to calibrate my screen, before or after you calibrate every other computer and iPad screen on earth?
If you don't invest in a cheap monitor calibration tool, that's your bad, I waited too long until I finally discovered how essential this is.

A lot of browsers have built-in color management nowadays: IE, Firefox, Safari.
So what do these browsers do with an AdobeRGB photograph that is to be displayed on grandma's uncalibrated sRGB'ish monitor?
Obviously they display the photograph as srgb'sih if you set stock srgb in your browser and os color management. Are you sure you know how color management works :-o ?

Many better photo labs have printers that go beyond srgb
We don't have any of those around here ... just those KODAK self-service kiosks.
Ugh, time to move :-p ... where I live (Germany) most internet printing sites are wider gammut than srgb and also a lot of local print shops.

Ugh? How so?
Obviously, because the gamuts aren't the same.
To repeat your full statement: "AdobeRGB to sRGB conversion is never 100% successful because the gamuts aren't the same". When you read it, does that make sense to you?

In my experience colour management only works when you can control all the devices in the chain.

When you edit a shot and then print it, this includes two devices - your monitor (use a color calibration tool) and a printer (use a color calibration tool or the print shop's cms profile). Doesn't sound like rocket science, esp. with soft proofing in software like Lightroom.

In these case sRGB is the common language.

Under closer scrutiny, srgb is rather different between devices that claim to be srgb. Probably better than displaying adobergb or photopro, but still calibration and color management is essential unless you don't care about the accuracy.

21
EOS Bodies - For Stills / Re: Is there any reason to shoot sRGB????
« on: November 25, 2014, 04:50:58 PM »
very interesting, thank for info  :o

I only read about the histogram myself recently, but it's probably not that much of a difference - for the real deal use Magic Lantern and the full raw histogram.

he probably didn't mean conversion, but displaying Adobe RGB image in sRGB color space, to which some web pages are prone and then colors are shifted

Even so, I don't see why a properly set up color management (in your browser and/or os) wouldn't work - that's the very thing it's designed for. Sticking to srgb w/o color management might sound simple, but it isn't unless you're very careful to pick a monitor that happens to be 99,9% srgb.

22
EOS Bodies - For Stills / Re: Is there any reason to shoot sRGB????
« on: November 25, 2014, 04:28:25 PM »
If you photograph in RAW and obviously post-process, then the colour space setting in the camera is irrelevant.

Not quite:
1. the histogram is based on this setting, with adobe rgb you get a better representation
2. in every cr2 there's a full jpeg thumbnail with the color space selected.

However, if you photograph in JPEG (or RAW/JPEG) then sRGB is the more sound choice because your computer screen (and almost everyone else's screen) is set to sRGB.

Not quite: Wide gammut monitors have come down a lot in price recently. And in any case you should calibrate the monitor and use color management even with an srgb model.

The web runs on sRGB.

Not quite: A lot of browsers have built-in color management nowadays: IE, Firefox, Safari. But to be fair, this statement of yours was less wrong than the others :-p

Also your printer (and definitely the printer at the local photo-lab) prefers sRGB.

Not quite: Many better photo labs have printers that go beyond srgb

When an sRGB device encounters another colour space, it will usually convert said other colour space to sRGB. Conversion is never 100% successful.

Ugh? How so?

23
EOS Bodies / Re: Another 50mp FF DSLR Mention [CR2]
« on: November 25, 2014, 02:10:35 PM »
And now back to the normal yada yada "You're wrong, I'm right!"

Now, I don't think any female photogs would read a thread like this up to this point, probably it's easier for them to get a life - so I feel to make a visual comment of the proceedings :->


24
Lenses / Re: Lens as a gift. Non Photographer buying... :)
« on: November 25, 2014, 01:28:16 PM »
No offense to other posters but if you get a camera, avoid the 60D, get the 70D.  I own the 60D, 70D and 7D2 and the 60D sensor wasn't that great.  (Same sensor as the 7D.)  70D sensor is much better.  In fact, the entire camera works better including the handy touch screen, faster fps, better AF, etc.

The 60d sensor is a bit better than the 7d1 (less banding), but for the ergonomics alone it would be a great step up from an older Rebel if the budget is tight. But of course the 70d is a very good all-around choice as it's basically a downgraded 7d1. So when in doubt I'd rather go 60d+new lens like the bare 70d if the budget is maxed out for a while.

25
EOS Bodies - For Stills / Re: 7D MK II with EF 180 mm F/ 3.5 L MACRO
« on: November 25, 2014, 01:25:12 PM »
Yes, Sir, You are right on the target, Dear Teacher Mr. Mt Spokane.

Mr. Mt Spokane is indeed correct, and great shot Mr Surapon! I tried to do something like this with my 60d and the 100L (and 70-300L for comparison) lenses and failed miserably - you need at least a 7d-type af system for tracking insects in flight. With the 6d, obviously I wouldn't even try.

26
Lenses / Re: 70-200 2.8 is ii vs new 100-400
« on: November 25, 2014, 01:14:20 PM »
Hey everyone, I currently have a 70-200 F4L USM and shoot a lot of water polo from around the pool as well as surf shots from shore. I am wondering if I should invest in 1.4 or 2.0 extender or should step up and get one of the above lenses and if so which one would you all suggest? Thanks. RG

With a 2.0 extender you'd be at f8, so probably your camera body (which is it?) won't af at all - or bhave less af points available. With an 1.4 extender you'd still feel the loss off speed for fast action.

General advice is to get a lens for its native range and only use a tc now and then. So unless you're very determined on having f2.8 at 200mm. the new 100-400L2 is certainly a great choice.

27
As a viewer, I'm not sure what I'm supposed to make of these things as I play around with them (e.g. "Ball, Fuzzy Boy; Boy, Fuzzy Ball".)
I agree changing the dof seems to be rather childish (like I laughed my a** off as a 5-year old when seeing a movie backwards). But I am impressed by the interactive 3d effect you can create when "focus-stacking" the whole dof region of the camera. Imho ( :-p ) It's not only nice to play around with, but you can even change the composition in post.
https://pictures.lytro.com/lytro/collections/41/pictures/894396
I can see a use case in interactive Ads
3D movies with eye tracking refocus.

Point is: You can do the same right now with focus stacking. The advantage of light field would be speed (but not fast enough for movement), the disadvantage small resolution. But adjusting the point of view after shooting, now that's unheard of until now.

28
EOS Bodies / Re: Another 50mp FF DSLR Mention [CR2]
« on: November 25, 2014, 01:07:52 PM »
There are over 40 lenses in group A and can utilize all 61 AF points and 41 cross type sensors as well as the 5 dual cross type sensors.  These lenses are Canon's performance AF lenses that need the speed and accuracy this system provides.

I'm all with you that the 1dx af system is great and Canon did a good job putting it in the 5d3 - and I would wish that I could afford one instead of my 6d. It's a pity they didn't manage to enable the red af points when tracking, but that probably really not deliberate, but a botch job in development.

My simple point was that a general statement "Canon has x af points, Nikon has y" isn't valid in all case because Canon puts the lenses in groups. Which probably is a good idea so they actually work. So would you get off my back, pretty please with sugar on it :-p ? I am absolutely willing to sacrifice my Yongnuo rt transmitter to appease the great Canon god :->

29
EOS Bodies - For Stills / Re: 7DMKII Focus keeper rate ideas?
« on: November 25, 2014, 04:44:57 AM »
Can anyone comment on the 24-70 f2.8?

The mk2 has an improved af system vs. the mk1, but it's only usable with the latest camera bodies like 1dx and 5d3. But both are photo journalist lenses designed for fast and spot-on af. There's a lensrentals article on that, but it's not recent so it doesn't say anything about the 7d2.

30
Lenses / Re: Critical View of 70-200 f/2.8 mkii+2xTC III
« on: November 25, 2014, 04:18:35 AM »
I did some more today, tbh i am not sure if its me, the lens or the camera, but i think there is an AF problem

Looks like a combination of backfocus (did you check for afma?) and motion blur to me. Getting an insect like this in focus with a tele lens is very difficult, and the result with a tc won't overwhelm you in any case. If you are interested in these scenes, think about getting a macro lens like the 100L or 180L (for more reach).

To compare, here is one without the 2X TC II:

Maybe or lens shake (did you wait a moment to let ths IS swing in?), or motion blur - 1/500s is not that fast on 200mm * 1,6x crop. But generally this is about what you get after heavy cropping like this, remember your crop sensor already uses only part of the lens' glass.

Pages: 1 [2] 3 4 ... 342