November 24, 2014, 07:25:55 AM

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Messages - dolina

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1
I upgraded to 10.10.1 once it got out. I would have wanted to do so later but its the only way I could get the 7D Mark II Camera RAW update for iPhoto & Aperture.

2
Animal Kingdom / Re: Show your Bird Portraits
« on: November 19, 2014, 01:00:06 AM »
Awesome portrait! I am glad everyone on CR are level headed enough not to go all bat-S___ crazy over how intimate the portrait was.


fandf-15 by lozwilkes, on Flickr

At Feathers and Fur, a small experience centre near Reading, UK

Now THAT is a bird portrait!

3
EOS Bodies / Re: Canon 7D Mark II Owners first thoughts
« on: November 17, 2014, 01:41:26 AM »
Not a troll post so pls do not interpret it as such.

What do you not like about your 7D Mark II?

4
Lenses / Re: If only Canon made this lens
« on: November 16, 2014, 01:51:48 AM »
Here's a 500mm f/5.6 at http://www.adorama.com/KWTP556.html

Price: $3,355
Dimensions: 10.16 x 34.03 cm
Weight: 1.96 kg

5
Lenses / Re: If only Canon made this lens
« on: November 15, 2014, 05:52:00 PM »
You may want to re-title the subject to get more people to participate in the discussion.

Maybe so...
Whatever the reason, it is a lens I would like to own and stop me dreaming about 300 f2.8 /400 f4 with convertors and the /500 f4.
Incidently, i had the 100-400 but swapped it out for the non IS 400 f5.6 due to better IQ. Maybe the mk2 100-400 with 1.4x will be a sharp combination!
I would love to own one as well. Less than 2kg 500mm would be awesome walk around lens & be more useful to me than any 400mm f/5.6 lens.

6
Lenses / Re: If only Canon made this lens
« on: November 15, 2014, 05:26:48 PM »
You beat me to the above calcs.
As a user of astronomical refractors, the objective diameter usually determines the weight and volume.
However I'm not sure it's due to lack of demand but more a case of why sell one when you can sell two!! ;)
More like economics of scale. Any sort of manufacturing with such a high quality control targets have a very high fixed cost.

If the demand is not high enough to make more than one f-number at a given focal length then you are either sell one f-number per focal length (500mm, 600mm & 800mm) or no f-number (1200mm).

Ever wondered why Sony's $13,000 500mm f/4.0 is more expensive than Canon or Nikons 600mm f/4.0? Simply put there aren't enough Sony users, period.

7
Lenses / Re: If only Canon made this lens
« on: November 15, 2014, 05:11:47 PM »
I base the grouping on the diameter of the front element of the lens

Guestimate price of a modern 500mm f/5.6 IS

71.43mm
$2,200 100-400 f/4.5-5.6 IS II; 1.59kg
$2,300 70-200mm f/2.8 IS II

89.29mm (theoretical price & weight)
$4,000-5,000 500mm f/5.6 IS
1.59-1.94kg


95.24mm
$2,000 Sigma 150-600mm f5.0-6.3; 2.86kg

100mm
$6,000 200mm f/2.0 IS
$6,470 400mm f/4.0 DO IS; 1.94kg
$11,800 200-400mm f/4.0 IS

107.14mm
$6,600 300mm f/2.8 IS II

125mm
$9,500 500mm f/4.0 IS II; 3.19kg

Within context f/5.6 and smaller f-numbers are equated to lower price tags but the front element's diameter is a better indicator for pricing.

Now why does Canon make five lenses with a maximum focal length of 400mm and only one lens whose maximum focal length is 500mm, 600mm and 800mm?

Pretty much demand is not large enough for more than one f-number at these focal lengths.

I was also hoping for a 500mm f/5.6 as 400mm f/5.6 is largely useless in the Philippines for birds in the wild.

Now, the lens would sell for 1/2 of a 500mm f/4 IS II at below 2kg. As for height, length and depth I cannot really say.

Sigma on the other hand would be best in the position to offer such a lens at the price you are asking for.

In fact Sigma does make a 500mm f/4.5 without OS at $5,000 at 3.09kg.

8
Lenses / Re: EF 35mm f/1.4L II to Finally Come as Well? [CR2]
« on: November 14, 2014, 01:27:21 PM »
Since the 40mm pancake came out I had very little incentive to wanting/waiting for the 35/1.4 II.

Not that it should discourage anyone for waiting another 6 years or so for it.  ;D

Now, a 135/1.8 with IS is mighty interesting to me.

10
Lenses / Re: Introducing the Canon EF 100-400 f/4.5-5.6L IS II
« on: November 11, 2014, 10:20:51 AM »
Canon Hon Kong's video comparison between the v1 & v2

http://youtu.be/phutXDbmkyw

11
I hope the 5D Mark III successor will surpass the Sony's successor.

12
Canon EF Zoom Lenses / Canon EF 100-400 f/4.5-5.6L IS II USM
« on: November 11, 2014, 08:27:39 AM »

13
Lenses / Re: Did Canon Leak the EF 11-24mm f/4L?
« on: November 11, 2014, 08:25:42 AM »
Rumor is it'll cost $3,000 wide rectilinear zoom.

14
Lenses / Re: Introducing the Canon EF 100-400 f/4.5-5.6L IS II
« on: November 11, 2014, 12:03:23 AM »
Works with 1.4x & 2.0x Extenders / TCs





Official Tech Specs

Focal Length & Maximum Aperture   100-400mm 1:4.5-5.6
Lens Construction   21 elements in 16 groups
Diagonal Angle of View   24°-6°10'
Focus Adjustment   Inner focus system / USM
Closest Focusing Distance   3.2 ft. / 0.98m
Zoom System   Rotation Type
Filter Size   77mm
Max. Diameter x Length, Weight   Approx: 3.7" x 7.6" / 94 x 193mm
Approx: 3.46 lbs. / 1570g (lens only, including removable tripod mount)
3.62 lbs. / 1640g (lens + tripod mount)

15
Lenses / Re: Introducing the Canon EF 100-400 f/4.5-5.6L IS II
« on: November 10, 2014, 11:12:38 PM »

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