March 03, 2015, 07:39:05 PM

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Messages - wopbv4

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1
Color management is a difficult subject.

Please read
http://www.imagescience.com.au/pages/The-Digital-Fine-Print-Book.html

Although I am a Mac user, please be aware that Mac OS X (still) does not support 10 bit/color channel!
Mac has been marketing the Retina screens with a lot of success, but for true color management, they can not compete with Eizo or NEC

2
Lenses / Re: 400 DO II continues to test out as superb
« on: February 24, 2015, 04:54:37 PM »
Hi Karl XII,

can you share some pics with us?

I am about to order this lens , but I still have doubts. The contrast of version one was not that great

Thanks in advance

Ben

Hello!
Here are two photos with the 400mm DO II.
They are cropped some, and i´ve added some contrast and sharpness.
https://www.dropbox.com/s/cenm3gtcttcisic/7T3A9448%20a.jpg?dl=0
https://www.dropbox.com/s/qnh1bbj3io6f1yd/7T3A9470%20a.jpg?dl=0

Hi,

thanks very much for the photos.
In the mean time, I have ordered the Ef 400 do II.
It is a bit of a gamble overhere in Australia as nobody can give an exact price, they all mumble "around 8500 AUS$"
ETA is unknown as well, hope that I do not have to wait too long.

Thanks,
Ben

3
Lenses / Re: 400 DO II continues to test out as superb
« on: February 13, 2015, 05:10:42 PM »
Back the the topic, I am more concerned with how the DO will render the image as a whole, including the background / OOF areas. This feedback will ultimately come from the field and until such time, I'm keeping my fingers crossed as to how this performs from a holistic viewpoint.

Also, what is of concern to me is how this lens will play with TCs - somehow I have a feeling that it won't be as great as the non-DO superteles.

You can find pictures with OOF areas and with teleconverters in my field test: http://blog.alamany.com/2015/01/canon-ef-400mm-f4-do-is-ii-review.html

And I can say you that with teleconverters it works as good or better than my EF 500mm f:4L IS.


Thanks, very much for the excellent review.
Will the concentric lines show up in a shot of the moon?


4
Lenses / Re: 400 DO II continues to test out as superb
« on: February 13, 2015, 05:06:19 PM »
I´m getting my 400mm DO II tomorrow or the day after.  :D
I live i Stockholm, Sweden.
I´ve been waiting since my pre-order november 4.
Happy days!

Hi Karl XII,

can you share some pics with us?

I am about to order this lens , but I still have doubts. The contrast of version one was not that great

Thanks in advance

Ben

5
Lenses / Re: 11-24 is here, with images of it compared to Nikon 14-24
« on: February 07, 2015, 06:05:34 PM »
I didn't hesitate for a second - it's pre-ordered.  Here's what the Japanese site has about the lens and from the YouTube video, it's looks like flare is handled quite well for a lens this wide:

Microsite:
http://translate.googleusercontent.com/translate_c?depth=1&hl=en&prev=search&rurl=translate.google.com&sl=ja&u=http://cweb.canon.jp/ef/info/ef11-24/index.html&usg=ALkJrhiVd7Ij1cav2wcymNX9NfZ3oj167g


Video: https://www.youtube.com/watch?v=mI_gHK5hqnE

PDF: cweb.canon.jp/pdf-catalog/eos/pdf/ef11-24-F4l-usm-1502.pdf

At the end of the youtube video, it very clear that the front element moves in and out of the barel. How can this lens be weather sealed with a design like this?

6
EOS Bodies / Re: POLL: Price of 5Ds
« on: January 31, 2015, 11:20:47 PM »
Depends if it will do 4K video ??
The 1DC is selling at a significant discount compared to release prices overhere in Australia, 6850 US$. It looks like that dealers want to clear their stock before the 5Ds is announced.
If the 5Ds has clean full 4K video, I expect the price to be very high, hence my vote for more then 5000$

7
Animal Kingdom / Re: Red Panda
« on: January 01, 2015, 06:31:02 AM »
Excellent work, a lot better than mine.
Attached the "best" of ~100 shots

8
I doubt if there will be an upgrade for the Pro-1 soon.
Looking back at PRO9500 Mk1 released in 2007, replace by mark II in 2010, replace by  ( a lot better) Pro-1 in 2013.
The Pro-1 is significantly better then pro-10 or pro-100, so I do not think that rebates for those are an indication of Pro-2 release soon.

9
Technical Support / Re: QUESTION ABOUT RECHARGABLE AA BATTERIES.
« on: December 06, 2014, 11:26:07 PM »
What I do after the block of 12 batteries has been fully charged, I switch off the power to the adapter, but I leave the batteries in the adaptor. After 15 min when the batteries have cooled enough, I switch on the power again and I get another 30 min charge on top.
If I understand correctly, you expect the batteries to cool after being charged, and then make a new charging? :o
In this case, you will have no gain in battery life, but will only shorten its lifetime. :-\
I recommend NOT recharge a battery that is already full. :-X
After I charge the batteries and let them cool down, I have measured the voltage and it is on average 1.1V. When I put them back in the (eneloop) charger, the light goes red and it charges for another half hour before light goes green. I take the batteries out, let them cool again and re measure, I get a voltage of 1.15 - 1.18 V.
Whereas your volt meter is working properly, your batteries with only 1.1 volt are damaged, and will never be charged with the nominal capacity.

NI-MH batteries good quality should have actually 1.39 to 1.45 volt immediately after end the charging. I recommend making sure your charger is the intelligent type (and fully functional), avoiding overheating and premature deterioration of batteries.

Hi ajfotofilmagem,

thanks for the advice, you are 100% correct.
I used another voltmeter and indeed the batteries read 1.45 volt when fully charged. Another charge on a full battery does not change that reading, stays at 1.45 V.
So, the green red light can only be trusted in the case of (partially) drained batteries, not on full batteries. This is an important lesson for me.

As such, I retract my previous comments

Again thanks for your help

Ben

10
Technical Support / Re: QUESTION ABOUT RECHARGABLE AA BATTERIES.
« on: December 06, 2014, 05:18:35 PM »
What I do after the block of 12 batteries has been fully charged, I switch off the power to the adapter, but I leave the batteries in the adaptor. After 15 min when the batteries have cooled enough, I switch on the power again and I get another 30 min charge on top.
If I understand correctly, you expect the batteries to cool after being charged, and then make a new charging? :o
In this case, you will have no gain in battery life, but will only shorten its lifetime. :-\

I recommend NOT recharge a battery that is already full. :-X

Hi ajfotofilmagem,

please help me with this!

After I charge the batteries and let them cool down, I have measured the voltage and it is on average 1.1V. When I put them back in the (eneloop) charger, the light goes red and it charges for another half hour before light goes green. I take the batteries out, let them cool again and re measure, I get a voltage of 1.15 - 1.18 V.

Furthermore, with nearly empty batteries, it takes a long time for batteries to recharge in a 12 battery block, several hours. During the charge,  the batteries do get warm, guess about 40 DegC , 105 deg F. I have been worried about this as I have heard stories of exploding batteries. From first hand experience,  I had a battery in my Macbook Pro that became very hot and burned out.

I happy to take any advice

Ben

11
Technical Support / Re: QUESTION ABOUT RECHARGABLE AA BATTERIES.
« on: December 06, 2014, 04:33:04 PM »
Hi Surapon,

I use eneloops all the time. I buy them in 50 packs (AA) at 4$ each.
What I do after the block of 12 batteries has been fully charged, I switch off the power to the adapter, but I leave the batteries in the adaptor. After 15 min when the batteries have cooled enough, I switch on the power again and I get another 30 min charge on top.
Having said that, I use 12 battery for each of my 600EX-RT, 4 in flash, 8 in battery pack and that combo gives me enough to work a full afternoon without fully draining the batteries, but they do need several hours of recharge thereafter. The above combo, compared to batteries in flash only, recharges about 3 times as fast, 4 seconds for full flash goes down to about one second. Is it worth the additional weight of the battery pack? For me yes, but each has to decide.

Hope this helps

Ben

12
Lenses / Re: What is your favorite lens/camera combo in your camerabag?
« on: December 02, 2014, 09:35:37 AM »
Canon 6D w/ 70-300mm L & 35mm f/2 IS & 15mm f/2.8 Fisheye & 430EX II flash.  It's a tough to beat combo and is light and easy to carry in the Lowepro Pro Messenger 160.
+1
The 35mm F2 IS is an absolute dream on a FF body. Very high IQ and I can go down to 1/15 without any problem, which helps in low light.

13
Lighting / Re: Speedlites - How many are enough?
« on: November 16, 2014, 08:48:37 AM »
7-9 is all you'll ever need, but 1 is enough.

+1


Eight.

I use lastolite ezybox II softboxes.
Mainlight I use four speedlites, Fill light one, Rim/back light one, plus two for (white) background.

I know that most people think that four 600EX in main light is overkill, but I use the large 40"  Octa and it gives me a lot of flexibility. The option to "tilt" one or more of the speedlites inside the softbox gives fantastic effects.

14
X-Rite has released Colormunki photo V1.2 which works on MAC OSX10.10 (Yosemite).

X-Rite has also managed to bypass the printing problem that they had in previous versions (= unable to switch of "Color Matching" within ColorMunki Photo software).

Net result is that ColorMunki Photo now produces reliable print profiles, which are very close to the profiles I had created by a professional print laboratory for my printer canon Pro9500 II

I am pleased with the X-Rite response, good work from the software developers

15
Lenses / Re: The next three new lenses? 50, 100 macro, 70-300
« on: November 12, 2014, 08:21:00 AM »
The 50/1.4 is old and tired.... a refresh with better build,optics and a ring USM motor has to come sooner or later. IS would be nice too.
The 100 macro? Still a great lens for the price, the only real improvement would be to add IS, but there's the L version, so that isn't going to happen.
I'm pretty sure the 50/1.4 has a ring usm already. The 1.8 doesn't. That thing is noisy as hell.

Indeed, the 50/1.4 is due for a replacement.
As far as I am concerned if they bring a lens on the market that has same quality, sharpness etc as the latest line of 24, 24 and 35 mm non-l lenses, I will buy one straight away. I have the Canon EF 35mm f/2 IS USM and absolutely love it.
Also, but most likely a manual lens, a new tilt shift around 50 mm and 90 mm would be fantastic. I would be willing to cough up 3000$ for a 50 mm equivalent of the TSE-24 F3.15 mk II

Let me fix up the spelling errors sorry!!

Indeed, the 50/1.4 is due for a replacement.
As far as I am concerned if they bring a lens on the market that has same quality, sharpness etc as the latest line of 24, 28 and 35 mm non-l lenses, I will buy one straight away. I have the Canon EF 35mm f/2 IS USM and absolutely love it.
Also, but most likely a manual lens, a new tilt shift around 50 mm and 90 mm would be fantastic. I would be willing to cough up 3000$ for a 50 mm equivalent of the TSE-24 F3.5 mk II

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