December 21, 2014, 07:54:33 PM

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Messages - BozillaNZ

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EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: December 18, 2014, 08:18:10 PM »
Considering their current pricing: I estimate 4500-6000$.

$6000 = D810 + 2 Nikkors, and that will be what most user choose.

EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: December 18, 2014, 07:38:23 PM »
Any word on whether this will be Bayer or Layered?

Can't be a layered, if 3 layers 50MP, it is only a 16MP sensor in terms of real geometrical pixels, which is too low in today's standard.

Of course unless it a 50MP x 3 layers, which will be a big jaw dropper  ::)  :o

Or a 25MP x 2 layers? With 1 G layer in full resolution and 1 R/B layer in half resolution, but it would be very hard to selectively let both longer and shorter wave light pass through and stop a mid wave light or vice a versa.

Photography Technique / Re: EC - adds or subtracts light?
« on: December 18, 2014, 07:33:07 PM »
First, thanks for the good laugh!

Second, if you can't grasp the fact that 1/250 is bigger than 1/500, or 1/4 bigger than 1/8, I suggest you read 1st Grade Math, Chapter Fractional Numbers  ::)

If a f/1 lens with 1 second shutter gives you 1 dose of light

then a f/2 lens with 1/2 second shutter gives you a quarter dose of light, since 1/2 * 1/2 = 1/4, how magical is that?!

EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: December 17, 2014, 11:22:32 PM »
Good news, just in time for a decision.

I will hold on to my 7D and 1Ds2 which don't worth much, and sell the 1Ds3 soon.

When the new Canon comes out there will be a decision to make:

1. It has the best sensor in the world, better than Exmor: Get the Canon and be happy, stay in Canon camp.
2. It has the same old 11-bit sensor only more pixels (i.e. FF 7D2): Get a Sony body and dump many of the L lenses, gradually move away from Canon camp.

Canon, many of your long time customers are giving you the last chance to redeem yourself.

Focal length itself does not mean anything.

Focal length combined with sensor size (diagonal) determines the angle of view. Angle of view determines "telephoto compression"

So, 135mm on APS-C (1.6x) and 216mm on FF will give you the exact same "telephoto compression".

And 135mm on 20MP APS-C and 216mm on 20MP FF will give you the same degree of angle of view per pixel, hence being affected by camera shake exactly same too.

Note that we haven't touched about depth of field yet, which is another big can of worms.

" I use the center point 99% of the time anyway"

Whenever I see this, sigh and click away.

"I use my hand anyway so who needs a wife!"

You don't know what you miss till you try it out.

EOS Bodies - For Stills / Re: Vertical curtain velocity
« on: December 17, 2014, 10:56:18 PM »
I still have the original 1D, the APS-H CCD sensor with global electronic shutter which tops at 1/16000s and flash syncs at 1/2000.

Now a decade later we still can't have this luxury, sigh...

EOS Bodies - For Stills / Re: Just picked up a 7D
« on: December 17, 2014, 10:53:30 PM »
A good copy of EF 50 1.4 will be a very good portait / medium tele for the 7D.

Also I found 24mm on APS-C a natural perspective for me to record indoor events. My 24L II and 50 1.4 are the two lens that stays on the 7D 95% of the time.

Also a 100mm MACRO serves as a dual propose portait / macro lens.

So here you go: 24mm, 50mm, 100mm, you can never go wrong with this combination. For ultra wide landscape, check out the new EF-s 10-18mm IS STM. Very cheap but really, really nice.

Lenses / Re: DANGIT! I rented the 85 1.2ii
« on: December 16, 2014, 06:44:15 PM »
Even if the Sigma produces an Art version of 85 it will still be a f1.4.

f1.2 is f1.2, now you tried it and you know you want it. Another saying, don't touch it if you don't plan to own it.

It's funny that 1-2 weeks before I bought mine, I was in my dream playing with it too! I remember clearly the feel of the focus ring IN MY DREAM  ;D ;D ;D

EOS Bodies / Re: Using full frame lens on crop body cameras ?
« on: December 16, 2014, 06:39:09 AM »

The only elements that would be smaller are the small elements nearest the camera. The largest grouping would be the same. on lenses longer than 50 or 60 mm it makes a hardly recognizable difference.

Telephoto yes, wide angle no. Just look at EF 24 2.8 and EF-s 24 2.8. The EF-s one is actually a 38 equivalent FoV one so it's narrower and a lot smaller.

Using a 70-200 on crop would be less wasteful than using a 16-35

EOS Bodies / Re: Noise - maybe it's good?
« on: December 16, 2014, 03:07:49 AM »
7D, ISO 12800, EF 50 1.4 wide open, 1/50s

100% crop:

EOS Bodies / Re: Using full frame lens on crop body cameras ?
« on: December 15, 2014, 10:51:42 PM »
When you mount the same FF lens to a APS-C 1.6x crop sensor, you are essentially only capturing 39% of the light (photons) the lens collects, and throws away the rest of the 61%. No matter how you spin, that is a loss.

So yes, using FF lens on APS-C is wasteful, because you could as well use a native APS-C lens with the same focal length and aperture, and it will be a lot smaller and lighter because the glass in it collects light from a narrower angle of view so it doesn't have to be as large.

Center weighted because I don't want the AF point to influence my choice of exposure. I will always dial in +/- EC before the exposure, judged by the zone distribution of the scene I want to photograph. So no right choice for my in the topic since I am not trying to be "lucky" but try to dial in the actual exposure.

EOS Bodies / Re: Canon 5D mkIV
« on: December 10, 2014, 10:19:45 PM »
Take the 5D3, put 7D2's 65-pt all cross focus system, 150k meter (this one is optional), 36MP Exmor sensor and you can shut up and take my money!

Lenses / Re: 85 1.2 Clipped Bokeh
« on: December 09, 2014, 10:47:49 PM »
Yes, it's caused by the mirror box geometry blocking light rays exiting the rear element (essentially forming a rectangle aperture). Just something you have to live with by getting a f1.2 lens on an SLR type camera.

You can reduce the effect by stopping down, and moving the background lights further away the subject.

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