October 25, 2014, 09:26:21 PM

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Messages - Halfrack

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802.11a is dog slow, but uses the 5 GHz band.  802.11b and g are faster, but use 2.4 GHz which is full of interference from microwaves, cordless phone, etc.   

This is a VERY common misconception: 802.11a is actually the same speed as 802.11g. In fact, in many ways, 802.11g IS 802.11a, just specified to run at the 2.4GHz band instead of the 5GHz band.


Just to second this bit, in that yes, A is G, but A doesn't have channel bleed issues - there are only 3 channels that don't interfere with each other in 2.4ghz, 1, 6 & 11.

To Mr Surapon, check and see if your microwave is older, you may want to replace it with a newer, more shielded model.

For Mt Spokane, check out http://ubnt.com - Ubiquiti Networks - their AirMax Bullet and Pico products are great for setting up links between buildings, or just burning through walls.

Everyone itching to spend money get in line for the Pentax 645z, as it's 50mp is even more detail....

Otherwise, go take a photo and have fun.

Photography Technique / Re: White Optical Satin
« on: May 22, 2014, 08:28:50 PM »
I seem to recall something to the effect of curtain sheer fabric being approximately the same stuff.

Technical Support / Re: Front focusing issue with Canon 50mm f/1.4
« on: May 21, 2014, 08:35:29 PM »
I have just purchased another, this time within warranty. So hopefully Canon will calibrate it if it's off.
Understand that the lens can only be so calibrated - sending it to Canon will not fix the issue.  Your issue is that you need a lens that out of the box works great with your 5D.  If you send in your lens and 5d, expect it to screw with your other lenses.  This is why the AF microadjustment is such a huge deal - it allows you to adjust how a body uses a lens on a 1:1 basis.  The Dof is so small, you've got 1/8" either side of what it thinks is focus, so are you shooting these hand held or?

Landscape / Re: Seashore, Beaches and Harbours
« on: May 18, 2014, 01:13:41 PM »
Seaside, Oregon last weekend with M & 18-55

Third Party Manufacturers / Re: Landscape Filters
« on: May 05, 2014, 12:44:29 PM »
Do a 4x4 or 100mm system - Hitech/Lee/Cokin - they all work the same, but there are more costs than just the holder - the attachment rings you need for each filter size are the real cost.  There is no replacement for a straight up ND filter - especially for that soft water look.  Grad Filters are a preference thing, soft, hard or reverse all give different effects, but are great when you want to balance out a scene.  Personally I've got the Cokin P system for some lenses and the Hitech 100mm system for the bigger glass. 

Foto Marketing seems to be the only dealer in South Africa, and they may not be around anymore.

Lenses / Re: Stacked TCs - 1.4x III + 12mm Extension Tube + 2x III
« on: May 01, 2014, 02:50:58 PM »
I'm still trying to understand where the mounting point and weight are at.  I'd think the 500mm is on a gimbal, with a 2x directly attached, but does the mk3 not have the ability to directly stack like the mk2's?  At some point it might be better to do either a Metabones/A7r method, or a 70D to get crop in space or a crop factor.

Canon General / Re: 16 MEGA-byte CF card!
« on: April 22, 2014, 11:51:53 PM »
I'm sure I've got a Smartmedia card around here that's 8mb....  Then again, when a floppy was 1.44mb, and Sony Mavica ran off of them...

Third Party Manufacturers / Re: Pentax 645z
« on: April 22, 2014, 11:25:51 PM »
This would have been a shut up and take my money moment until I saw that sync speed. :P
Why?  Light it with HMI's or LED's and roll with it.  Yes, it sucks that it doesn't support a leaf shutter, but with lighting options currently out there, we can make it work.  There are a few leaf shutter options on the Pentax 67, I wonder if they'll work with the 67 adapter :)

Personally, I'm excited to play with one.  I'm even considering it an addition to what I currently shoot, a H4D-50.  Things like shutter speeds faster than 1/800th, and ISO's going through the roof.

Canon General / Re: $10,000
« on: April 22, 2014, 01:39:40 PM »
Easy, but for a change of pace, not with Canon ..

$6k on a used Phase One P25 with a 645 body and 80mm kit lens
$2k on 2x Einstein's with CyberCommanders
$1k on a used 105-210mm Mamiya 645 lens
$1k on a tripod/head combo

If I wanted to be more landscapey, I'd swap the extra lens and strobes with a basic Cambo setup that I can shift.

Third Party Manufacturers / Re: How to Annoy a Photography Snob
« on: April 20, 2014, 12:00:22 PM »
Not to validate Ken, but the Canon 17-55 2.8 is almost an L in every way.  The upside is there are lots of used 17-55 EF-S lenses out there, and getting them repaired is a known quantity.  Sigma has improved dramatically, but if you're going to flip a lens after 6 months, better to stick with Canon.  If you're going to keep and love it, Sigma is a solid choice.

Poor Sigzilla, this world does not appreciate you.

Third Party Manufacturers / Re: Dissuade me to get a Rolleiflex
« on: April 15, 2014, 02:36:29 PM »
Where in the world you are matters, as Rollieflex is still around.  Here in the USA, check out http://rolleiflex.us/ the 6008 platform is pretty slick.

MF is enough of a difference in shooting style and technique, it allows you to challenge yourself, with the safety net of the Canon gear.  Personally I want to spend some time with a Mamiya RZ Pro II, after playing with a Hasselblad 501 last weekend, it's on my to shoot with list. 

Photography Technique / Re: Help with panorama merge
« on: April 10, 2014, 04:21:03 PM »
One thing to future readers of this thread, the number of images causes concern.  Try merging 3 images together first, see if you get the expected result.

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