September 21, 2014, 06:39:41 AM

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Messages - KyleSTL

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1
Lenses / Re: Development Announcement of a New 800mm f/5.6L IS II [CR1]
« on: August 19, 2014, 03:09:00 PM »
Which year was current 800mm f/5.6 lens released? Probably don't long ago. If so, do you think will be soon announcement of new shorter big whites like 300, 400,...

I'm just curious. Don't have money at the moment for neither of them. ;)

Current 800mm f/5.6L
Announced - Jan 2008 (http://www.dpreview.com/products/canon/lenses/canon_800_5p6_is)
Shipping - May 2008

...but it has the OLD white Canon color.

2
Lighting / Re: HSS with Einsteins win!
« on: August 14, 2014, 06:16:13 PM »
Isn't that working just because the whole process of taking the picture occurs within the 1/540 s of the full power flash duration? If so, it is not really high speed sync isn't it?

The resulting flash power must also be quite low as a 1/8000 s the exposure would only capture about 7% of the flash duration. Also, how constant is the flash exposure? As a flash output is far from linear, my feeling is that a small change in timing might result in quite a change in exposure.

I'm only starting of with flash photography and that's only me thinking out loud here. I was just wondering...
Longer flash duration during shutter travel is exactly what HSS is.  There is not other way to do it since there is no point in time during which the entire shutter is exposed.

No it isn't, HSS is many high speed pulses timed such that the entire shutter slot gets even illumination; not one long flash buts lots of very short flashes. These tiny fast short flashes effectively emulate one longer one, but at the cost of much power.

I was unaware of that.  I guess I have misunderstood HSS all along.  Thanks for the clarification.

3
Software & Accessories / Re: Aluminum vs. Carbon Fiber?
« on: August 14, 2014, 05:41:27 PM »
I've been considering a Roadtrip or Globetrotter by MeFoto, however, no one in my area carries them and I want to physically touch it and play with it before buying one.  The only way I've found to buy them in online, and I think tripods are one of those 'feel' purchases.  Would not matter who I bought it from because everyone lists them at MSRP.  Anyone know if there is an occasional sale on them during some point in the year?

4
Lighting / Re: HSS with Einsteins win!
« on: August 14, 2014, 01:11:23 PM »
Isn't that working just because the whole process of taking the picture occurs within the 1/540 s of the full power flash duration? If so, it is not really high speed sync isn't it?

The resulting flash power must also be quite low as a 1/8000 s the exposure would only capture about 7% of the flash duration. Also, how constant is the flash exposure? As a flash output is far from linear, my feeling is that a small change in timing might result in quite a change in exposure.

I'm only starting of with flash photography and that's only me thinking out loud here. I was just wondering...
Longer flash duration during shutter travel is exactly what HSS is.  There is not other way to do it since there is no point in time during which the entire shutter is exposed.

5
Canon General / Re: Another Canon Medium Format Mention
« on: August 11, 2014, 06:01:13 PM »
Square format FF has been discussed on this forum more times than more would care to admit.

A reflex mirror necessary to cover a 30.6mm x 30.6mm sensor would not be able to move in the flange distance allowed by Canon for EF mount.  So a DSLR is out of the question, however a long flange distance mirrorless is doable.

6
Lenses / Re: Canon EF 11-24 f/2.8L Coming [CR1]
« on: August 07, 2014, 04:40:04 PM »
11mm at f/2.8 and a subject distance of 4.7 feet = infinite depth of field from 2.38 feet onward, according to DOF Master.  So, one could handhold at shutter speeds greater than 1 second with f/2.8 after the sun sets and get everything in focus.  Sounds like a very specialized use...  ::)

Holy hyperfocal, Batman!

Since no one else has said it...  "This one goes to eleven."

You have won the day.  Excellent reference.

7
EOS Bodies / Re: High Megapixel EOS on the Way as Mentioned by Canon
« on: July 24, 2014, 01:08:55 PM »
Since the 100M and 70M numbers everyone is quoting goes back to the original EOS 650 in 1987, don't you think the market research and customer habits have changed, and the 95/5% being quoted is accurate for today's market?

8
EOS Bodies / Re: High Megapixel EOS on the Way as Mentioned by Canon
« on: July 23, 2014, 10:49:03 AM »
Unlike many Google translations, this one is a bit more readable...

I note the comment that the 16-35 mk2 was good for APS-H ;-)

The multiple aspheric lens surfaces allow them to ease some of the compromise between reducing distortion and field flatness. The two front lens elements make quite a significant contribution to this and will likely be seen again in new ultra wide zoom designs.

I still want a TS-E14 though ;-)

If the coverage of the TS-E17 is anything to go by, a TS-E14 with any notable shift would be somewhere between huge, expensive and impossible.

Take a look at this to see the effective angle of view of the imaging circle of the TS-E17 compared to a traditional rectilinear 14mm lens (panoramic comparison, near the bottom of the page):

http://www.the-digital-picture.com/Reviews/Canon-TS-E-17mm-f-4-L-Tilt-Shift-Lens-Review.aspx

No scientific fact here, but I'd estimate a TS-E14 with similar levels of shift as the 17 to project an imaging circle with an angle of view something equivalent to a 10mm rectilinear FF lens.

Exactly what I was thinking.

The diagonal angle of view (AOV) for the 14mm f/2.8 is 114°
The AOV for the 17mm TS-E (unshifted) is 104°
The AOV for the 17mm TS-E (fully shifted and merged) is 126°
The AOV for the Sigma 12-24mm at 12mm is 122°
A 14mm TS-E (fully shifted and merged) would be 135°


A 14mm TS-E lens would be equivalent to 9.04mm FF lens (or 5.7mm APS-C lens).

9
Based on the OP's other posts on CR forum, he was disappointed that his 5D3 could not produce acceptable 40 x 30 prints.  My question is: 

Does anyone believe the difference between 144 dpi (22MP @ 40" width) and 184 dpi (36MP @ 40" width) will actually please the OP?  The difference is only 28% increase in linear resolution.

How about 206 dpi (51MP @ 40" width) from the Pentax 645Z?

10
When my friend with a D800E shoots models side by side with me, the models have
always preferred the 5D2 jpg on the back of the camera!
I personally like the green skin tones (at least on the camera's LCD) of the D800. /sarcasm

The user interface of Nikon cameras is why I went with Canon in the first place. I don't find it intuitive.
I too loath the controls of Nikons.  The press-and-hold + dial rotation is uncomfortable and many changes require two hands.  I prefer all the Canons I've used (300D, 350D, 400D, 450D, 10D, 20D, 30D, 5D) over the Nikons (D70s, D80, D200, D300, D600).

11
Lenses / Re: Video Review: Canon EF-S 10-18 f/4.5-5.6 IS STM
« on: July 08, 2014, 01:42:24 PM »
I love DigitalRev, personally.  They are the Top Gear (which I also love, the UK version) of camera reviews.  Rediculous (sometimes offensive) comments, unscientific and ludicrous challenges and comedy above the small amount of consumer advice offered.  I understand how some people would not like this kind of programming.

I think TCS (The Camera Store) is a much more reliable source of legitimate consumer advice.  I appreciate both of them, though.

12
Lenses / Re: Review: Canon EF 16-35mm f/4L IS
« on: June 30, 2014, 01:20:33 PM »
IMHO the 16-35/f4L reduces the value of the all previous wide angle zooms to sub-$400, if that.

That's what excited me most about this annoucement.  While a 17-40mm won't have nearly as good image quality as the new 16-35 IS, it will certainly be a huge step up from my current film-era Tamron UWA.  I plan to jump on a 17-40mm as soon as they sink into the $400 range.

EDIT: Also Nikon should be thoroughly embarrassed by the performance of their 16-35mm VR, especially at the wide end:

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=949&Camera=453&Sample=0&FLI=0&API=0&LensComp=689&CameraComp=0&FLIComp=0&APIComp=0

13
EOS Bodies / Re: More EOS 7D Mark II Talk [CR1]
« on: June 16, 2014, 10:01:02 AM »
If true, the 7D Mark II's viewfinder will be the exact same size as the 5D Mark III:

5D3 - 1.00 / 1.00 x 0.71 = 0.71
7D2 - 1.00 / 1.60 x 1.15 = 0.71

Crop sensor fans would be elated.

14
Lenses / Re: This thing's gotta go!
« on: June 12, 2014, 11:45:41 AM »
Nikon 35-70mm f/2.8 AF-D Macro - fully disassembled, I was able to fix what was causing the zoom and focus to not be smooth, however, I was not able to reassemble it (I like fixing Canon gear much more)

I sometimes fix Nikon lenses and, yes, yuck to reassemble. You have to get all the gears and such correctly aligned in the correct order or it won't go back together. Very, very troublesome.

I'm glad someone else feels my pain.  I've fixed 4 or 5 other Nikon lenses, but this thing just killed me, with it's double-screw front-extending macro mechanism.  I've sought resources for repair manuals high and low with no success, not even Nikon's tech line could access the resource (let alone provide me with one).

15
Lenses / Re: This thing's gotta go!
« on: June 11, 2014, 02:10:21 PM »
Canon EF 28-105mm f/3.5-4.5 USM (metal mount) - no longer used since I fixed the 24-105mm f/4L
Canon EF 24-105mm f/4L IS USM - needs optical adjustment after aperture ribbon cable replacement
Nikon 35-70mm f/2.8 AF-D Macro - fully disassembled, I was able to fix what was causing the zoom and focus to not be smooth, however, I was not able to reassemble it (I like fixing Canon gear much more)
Canon Rebel XSi - need about an hour under a dissecting microscope to solder on a replacement ribbon cable connector (0.6mm pitch between leads) - although I might hang onto this one and turn it into a full-spectrum IR-visible-UV camera for fun

I haven't been buying or selling much over the past 9-12 months, just too many other things going on.

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