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Messages - raptor3x

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16
Hi everyone.

I've been asked a few times by forum members that when I review the Pentax 645z if I could post it in the forum.

Here it is: http://chrisgilesphotography.com/blog/pentax-645z-review-pt1-the-journey/

There's a fair bit there to go through and I cover the dynamic range, ergonomics, flash system and if you're in the mood 5.4gb of Pentax raw files for you to play with.

Love Canon, Love the Pentax.

Great review, I have to admit I'm a bit jealous ;D.  Do you have any example of the two stop high ISO difference between the 645Z and the 1DX?  The DPReview samples seem to show them within a stop but I assume you must be seeing something to convince you otherwise.

17
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 24, 2015, 03:15:45 PM »
For my purposes I need clean pictures and the quality I want I get up to ISO 1600 on 5D mark III. The 7D mark II comes upto ISO 800 at that quality. I need ISO 1600 regularly at the dances I shoot for the spot lighted sequences. I am going to rent the 7d mark II this year to test it myself before making a decision.

If you compared images taken at ISO 1600 with a FF'd version of the 7D2 sensor and a 5D3 with both downsampled to the same resolution, the FF'd 7D2 sensor would almost certainly be cleaner due to the significantly higher QE.

18
EOS Bodies / Re: Global Shutter Coming to Canon DSLRs? [CR1]
« on: January 22, 2015, 01:42:55 PM »
This is a step in the right direction for Canon and I'm hoping a firmware update 'might' bring this to the table.

Fujifilm just released their new line of mirrorless cameras that have ELECTRONIC AND MECHANICAL shutters. You can either use one or the other depending on shutter speed needed. Their shutter speed limit is 1/32,000 of a second.  Fuji also just provided firmware updates for two of their previous models to incorporate this new electronic shutter feature. Now, how great is that?

My point is, it can be done and is being done now with some manufacturers. The electronic shutter is totally silent. :)

The electronic shutter on the X-T1 is neat but it causes pretty severe rolling shutter effects even with relatively minor motion.  Global shutter is a completely different animal.

19
Lenses / Re: Canon EF 400mm f/4 DO IS II USM Lens Review
« on: January 19, 2015, 12:20:34 PM »
I really don't understand the whole concept of 400/4 DO II and why anyone would actualy buy it. It's probably my fault.
But let's go back for a second in time when the first generation of 400/4 DO was introduced.

400/4 DO IS - 1940g
300/2.8L IS - 2550g
400/2.8L IS - 5370g

The whole point of the 400/4 DO and the DO technology itself was beeing LIGHT! Much lighter than other lenses. Canon has sacrificed image quality to make a LIGHT lens. It was a welcomed innovation by many. You could choose to have an L lens with superb image quality or a very light (also smaller), "mobile" DO lens. Whichever you needed.
600g difference between 400/4 and 300/2.8 (which is a 420/4 with 1.4X) was significant.

And now...

400/4 DO IS II - 2100g
300/2.8L IS II - 2350g
400/2.8L IS II - 3850g

300/2.8 has improved. A LOT. It's lighter, (all II gen lenses got lighter) it's even better optically than before and also has a shorter minimum focusing distance (2m from previous 2.5m). THAT is improvement.
Meanwhile 400/4 DO got heavier. The previous 600g difference is now only 250g. Minimum focusing distance is 3.3m. Yes, it got better, much better optically. But we already had superb lenses. What we don't have is light lenses. The primary goal of DO should be to reduce weight and size. Image quality only comes second, no matter how strange that could sound to you. The first generation wasn't sold for it's image quality either.
Or maybe is it cheap? It's not.

In my opinion, the 400 DO beeing 2100g is a big FAIL. It does not stand up to the 300/2.8 (+1.4X) at all.

The increase in weight compared to the older lens is coming from the built in tripod collar whereas the older lens weight is with the collar removed.  In addition, the 400 DO IS II compared to the 300 IS II + 1.4x III is:
  • ~500g lighter
  • Faster focusing
  • Sharper wide open

20
Lenses / Re: Samyang 135mm f/2.0 Announced?
« on: January 12, 2015, 02:26:15 PM »
.
Looks like $550 USD at B&H...

http://www.bhphotovideo.com/c/product/1110672-REG/rokinon_135m_c_135mm_f_2_0_lens_for.html
Hmm, that'll have to come down to more like $400 to succeed. The 135L is at a street price of $7-800 used, and the refurb is right around $800. Cant see many (non-video) people saving $2-300 and losing one of the best AF lenses Canon has.
Also means the cine version would be like $700ish on release. Which is pricy as well.

I couldn't see paying $550 for an manual focus, non-Zeiss, lens - why not pay a few hundred more for a lens with excellent AF and L build quality the Canon 135L?

The image quality looks excellent from this first review

21
EOS Bodies / Re: NEW CAMERA - EOS 80D?
« on: January 08, 2015, 04:35:03 PM »
Obviously it's the new FF rebel. ;D

22
EOS Bodies / Re: Expect Higher End Products at CP+ in February
« on: January 05, 2015, 07:59:58 PM »
CES is about consumer entertainment....I have come to the conclusion that Canon have no interest in either the consumer or entertainment at all. Their attitude the last few years is baffling. They are the Nero of the imaging world I think.

Nero as in the CD burning software or Nero as in the historical figure?

23
EOS Bodies - For Stills / Re: New Firmware Coming for EOS 5D Mark III
« on: January 03, 2015, 09:16:43 PM »
if auto-iso on M would be possible soon on the 5D3. That would be great. It seems possible as it is only software (firmware).

Do you mean exposure compensation with auto ISO in M mode?  Regular auto ISO has always worked in M mode for the 5D3.

24
EOS Bodies - For Stills / Re: New Firmware Coming for EOS 5D Mark III
« on: January 03, 2015, 05:21:58 PM »
I think an important point isn't highlighted enough: You cannot downgrade, afaik that's never been so before(?) and it's "feature" itself enough worth releasing a new fw.

You can definitely downgrade from the current firmware to the older firmware on the 5D3.  I did it quite a few times for magic lantern before they updated to support the current firmware.

25
EOS Bodies - For Stills / Re: New Firmware Coming for EOS 5D Mark III
« on: January 03, 2015, 01:30:53 PM »
I would expect a 5D3 firmware upgrade to bring exposure compensation in manual mode with Auto ISO just like on the 7D2 and 1DX. Anyway, that's what I'm hoping for ;-)

I very much want to believe this but I'm guessing it will be something far less exciting.

26
Is he still claiming the 7D2 only does 6fps?

27
EOS Bodies / Re: Canon Confirms Development of High Megapixel Camera
« on: December 30, 2014, 09:25:24 PM »
What I don't get are those odd resolution numbers. Why not going to 54MP right away? Then you get a resolution like 9000 x 6000 which has much more friendly dividers and not such weird number like 8760 x 5840 ( = (2*2*2*5*73)^2 * 2 * 3) or 8850 x 5900 ( = (2*5*5*59)^2 * 2 * 3) or whatever the actual resolution would be like. What is the actual reason for such weird resolutions?

This was one of my favorite features of the Sony A7; the files are exactly 6000x4000 pixels.

28
EOS Bodies / Re: Canon Confirms Development of High Megapixel Camera
« on: December 30, 2014, 01:59:12 PM »

Just as a benchmark, that site also claims that sensor size has no real meaningful effect on DOF.

They're correct, the only way sensor size directly affects DOF is due to the relationship between circle of confusion and sensor size.

Which is a totally legitimate, real, and not-ignorable way.

Agreed, and the article in question spends several paragraphs talking about this.  The other poster implied either that LL didn't understand the effect of CoC on DOF or that there was some other factor that directly related sensor size to DOF.

29
EOS Bodies / Re: Canon Confirms Development of High Megapixel Camera
« on: December 30, 2014, 12:27:09 PM »

Just as a benchmark, that site also claims that sensor size has no real meaningful effect on DOF.

They're correct, the only way sensor size directly affects DOF is due to the relationship between circle of confusion and sensor size.

30
EOS Bodies / Re: More 7DII focus problems
« on: December 27, 2014, 03:09:40 PM »

Hey, ease up a bit, I'm just trying to learn here.  And I'm not quite the idiot you think I am, I shoot sports and it's almost always center point only, I get good shots, as good as the pros at the tournaments I've gone to.

Perhaps you can explain how these defined set of parameters choose what they choose.  Why does it sometimes choose what is the background, ignoring a decent foreground?  Why does it sometimes choose stuff off to the side and other times not?

Did you look at those pictures and can you explain why it choose what it did? 

Am I the only one scratching my head over that?  For the record, the 5DIII does not do that, the 7DI did not do that, my 20D and 40D and T4i did not do that.  But I'm sure the problem is me and the camera is perfect and all those other bodies just happened to do a better job.

Did you have iTR metering enabled for this?  If you look at which AF points are selected in the shots you've provided you can see that the camera is always selecting the high contrast target closest to the camera which is exactly what the 5D3/7D1/70D will do as well as the 1DX if you turn iTR off.  With iTR turned on, the camera should try to find faces in the frame to lock onto first and then go for the closest high contrast target.  As others have said though, for this kind of scenario large area AF mode in AI Servo mode with iTR turned off is probably the worst mode you could have picked.  In order of preference, I would have chosen Spot AF/Single Shot --> Single Point/Single Shot --> 65 point/Single Shot/iTR.  Also, iTR only looks for faces in single shot mode; in Servo mode it samples the color underneath the "seed" AF point and then uses that information to help track the subject through the frame.

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