January 28, 2015, 05:24:50 PM

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Messages - tron

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Third Party Manufacturers / Re: Review: Zeiss 15mm f/2.8 Distagon
« on: January 27, 2015, 12:26:30 PM »
I have no interest in this Zeiss lens however. TDP even mentions the Zeiss some has coma, not ideal for stars. I heard the Samyang has one up in this regard.
Actually, the Zeiss has very little coma, except in the extreme corners. Even then, it's not much. That's the main reason I bought the Zeiss (for star pics), after hiring and testing a couple of other lenses (a Canon 24mm f1.4 and a Zeiss 21mm). Plus the hard infinity stop makes distance shooting easy, day or night.

I strongly suggest the following 2 links for people who want to check coma.

Comments like no coma or not much coma are next to useless if someone thinks about buying this lens for astrophotography. It is not a 400$ lens...



Also quoting Brian from TDP:
An interesting image quality note is that my Canon EF 14mm f/2.8 L II USM Lens produces images 1/2 to 2/3 stops brighter than the ZE 15 using identical settings under a clear sky.

EOS Bodies / Re: EOS 5D Mark III Replacement Talk [CR2]
« on: January 26, 2015, 07:42:31 PM »
Maybe I'm in the minority here but I think Canon should call the new high MP full frame the 'EOS 3'.  Forget about 5DS....just go with EOS 3.  The film version hasn't been made since 2007 and the 'D' moniker is pointless as everyone already knows it's a digital camera.

and what about a FILM camera..?    I'd use it professionally along with my other cameras

Just call it a Canon EOS 3D, anyone who is in the market for one will know it's a model number not a stereoscopic camera. The potential for confusion, among those who actually matter, is very low.

Yes but how many times will you be asked if you need 3D glasses to go with it before you scream  :o  ;D
How about EOS 2D?  It will sound rather flat but it will keep hopes high for a future 3D  ;D

EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 26, 2015, 07:29:57 PM »
 I am not interested in a 50+ Mp camera. But any news = good news because it means something is going on.

So I guess no more than a year for 5DMkIV (similar Mp, higher DR, less Low and High ISO noise, just hoping... )

Now the new lens is interesting...

EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 24, 2015, 01:07:59 PM »
I prefer my 44Mpixels (two 5DMkIII cameras  :D :D :D :D )

EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: January 21, 2015, 11:00:04 AM »
Image Quality is about how clean the image is, how well colours are reproduced, etc. Low noise and high DR contribute in a very direct fashion to IQ.

That is part of it.

As has been pointed out before, but really shouldn't need to be, there are other aspects to image quality too. Like if the subject is in focus. Indeed, in many circumstances, that is as important as noise. I'm not the first to say, though I will repeat - moderate noise can be reduced by software, but a subject cannot be made to be in focus with any postprocessing technique if it was not so in the original image.

Focus has no bearing on the image quality - only the clarity with which subject of the image is captured. An out of focus bird at ISO 25,600 is just as noisy (image data wise) as an infocus bird at ISO 25,600. Focus cannot correct image quality issues.
It should be obvious though that lack of focus has a negative impact to IQ  ::)

Lenses / Re: Why not uppdate just the IS
« on: January 16, 2015, 07:16:40 AM »
They will have to work harder. Just like when they upgraded the 70-200 2.8L IS to 70-200 2.8L IS II.

My reasoning comes from the fact that the original (non-IS) 300mm f/4L is sharper than 300 f/4L IS (especially when making comparisons with 1.4X Canon teleconverter).

If I were to do this simply, I would try something rather funny:

1. I would choose the smallest possible shoulder bag that would carry the photo equipment.
2. I would choose a general purpose bag in the dimensions you mentioned.
3. I would put the small shoulder bag inside the bigger one.
4. I would fill the rest of the bag with all necessary items.


Lenses / Re: New Rebel & EF 11-24 f/4L USM Coming Shortly
« on: January 16, 2015, 04:52:04 AM »
Firstly, I said the 70-200 IS was worse than the non-IS.  I've shot both. I never said it was better than the IS II. It's clearly not. I own that one.

Moving on, for those lamenting the f4.....  Geez.... Ok, let's make it f2.8 and charge $5000 for it and have a lens as big as the old 50mm 1.0 or bigger.... Good idea.

What are the specs on the Nikon 14-24mm f2.8?   Does it cost 5k?

It costs 2k.  It doesn't go to 11mm.  Which is I believe 1 20-25% greater field of view capability and extreme forced perspective.  If Canon prices this at even $3500 (with the Nikon at $2000) It's because they know they can get it.  At f2.8, you're talking about a ton more glass hence the higher price.  It's the biggest full frame focal range at the wide end ever made.
It doesn't go to 11mm BUT it goes to f/2.8. The new Canon lens will not be so suitable for Astrophotography (which could benefit from 11mm).  So what Canon will give with one hand will take with the other...

For daylight photography an f/4 UUWA lens is OK I guess...

Lenses / Re: New Rebel & EF 11-24 f/4L USM Coming Shortly
« on: January 15, 2015, 01:32:47 PM »
Yet to get a 2.8 UWA zoom with excellent IQ and no coma   :(

Would it kill them to make a 16-35 2.8L III zoom  >:( ?

EOS Bodies - For Stills / Re: Preparing for the switch
« on: January 14, 2015, 12:50:53 PM »
Thank you all for your input. 24-70 f/2.8 is going to be my choice. 8)
An excellent choice sir...   :)

I like the original color versions much more than the processed ones...

EOS Bodies / Re: EOS 5D Mark III Replacement Talk [CR2]
« on: January 12, 2015, 01:31:06 PM »
Given that you have failed to articulate any other functionality losses, I'm going to therefore draw the conclusion that the "massively compromised with severe loss of functionality" is in fact limited to one feature and one feature only: autofocus and only when using a 3rd party adapter for 3rd party lenses.

Terrible battery life, Sony's weak UI, shutter-induced vibration, lossy RAW compression...but you go ahead and draw what ever conclusions you want – facts have never affected them before, no reason to let them start now.  ::)

So if I use a Sony lens and not an adapted Canon lens, I won't have any of these problems? Sweet!

We're talking about systems, is that concept too complex for you or are you merely being intentionally obtuse?
He may think that LCD display that shows the menu is implemented on lens glass, that the canon lenses have a leaf shutter that causes the vibration problem and that the compressed raw images are stored in ... the Canon lenses...  ;D ;D ;D ;D ;D

Software & Accessories / Re: how to backup photos in the field?
« on: January 12, 2015, 01:22:10 PM »
Does Nexto support incremental backup? I am not referring to the sync operation but to the initial card copy function.

Software & Accessories / Re: how to backup photos in the field?
« on: January 12, 2015, 11:30:03 AM »
There are portal devices like Hyperdrive...

Are these portals to another dimension?

http://www.hypershop.com/HyperDrive/UDMA-2/   ;D ;D

Software & Accessories / Re: how to backup photos in the field?
« on: January 12, 2015, 11:05:48 AM »
There are portal devices like Hyperdrive...

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