January 30, 2015, 05:13:58 PM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - GMCPhotographics

Pages: [1] 2 3 ... 50
1
Lenses / Re: Purple fringing of 85 1.2ii
« on: January 16, 2015, 08:16:37 AM »
My GUESS is that the 85mm 1.2 L is the lens least likely to get an update within five years.
Not so sure. The 85L has two weak spots that Canon should act on; its one of the non-IS "L" primes that encounters most failures (electrical problems) and the sloooow focus (even if its better than the 85LI). Its esspecially sad becasue it limits the use of the lens for action shots at night.

There is also the reflection issue. Those who use the 85L at night will surely have seen occaisional "sparks" of green light from time to time. I expect this can be fixed with some of the new coating techniques Canon continues to develop.

I would expect a 85L III to see improvements on all three issues.

When Canon starts to release new bodies with better AF and software for focussing such as eye recognition the usefulness of the 85L will improve as we can begin to shoot more confidently @F/1.2.

I used my 85II for a lot of low light weddings here in the UK using nothing more than 5DII's centre spot. I used a fine focus screen to assist me and it worked really well. I generally got about 3-4 shots per wedding which wasn't as sharp as I wanted due to focus errors, that's out of about 2000 image taken. On the 5DIII, my average hasn't changed but the single point spot focus is needed to get the best out of this lens but keepers vs losers is the same.

Many people complain about this lens, if you can't use it properly...go back to f2.8 glass and be happy. if not, then stick with it, it's a tough tool to learn but it's worth it. Top tier glass like this which has a thin DOF is always going to require a very high degree of skill and accuracy. Don't blame the lens...

2
Lenses / Re: New Rebel & EF 11-24 f/4L USM Coming Shortly
« on: January 16, 2015, 08:11:09 AM »
Finally and replacement for the Sigma 12-24. A useful but deeply flawed lens.
erm....$3K??? Really?

3
Lenses / Re: Purple fringing of 85 1.2ii
« on: January 12, 2015, 05:18:13 AM »
..but I think that that is just life with most exotic wide-open lenses.

Unless you get the Zeiss Otus 85mm f/1.4...

I'm torn between the Otus' hyper-expensive perfection with manual focus, and the Canon EF 85mm f/1.2 II's very-expensive but still-nice imperfection.  It's the chromatic aberation that really turns me off the Canon.

My hope is that Canon will bring out a Mark III lens next year that will correct the colour fringing issue.  I feel I can wait.  In any case, I need to hoard gold to get either of them.

I'm sure I'd be impressed with the Mark II but I'm yet to find a way to resell equipment without losing 50% value.  I see this purchase as a long-term marriage that I need to get right first time.

I think you need to get a grip on reality. On one hand you are happy to drop some serious cash on a luxury lens like a 85mm f1.2 II L and then it's not good enough for you, so you want to drop even more money on an uber niche 85mm Otus....and then you mention cost savings. Yeah right.
If you have the need and buying power for a Bentley then buy one....but don't bitch about the price or residual values. If you really want to be more conservative, go get an 85mm f1.8 USM. An awesome lens and really better value....but yes it has optical compromises like every other lens on the planet.

4
EOS Bodies / Re: EOS 5D Mark III Replacement Talk [CR2]
« on: January 09, 2015, 07:03:30 AM »
Canon must be desperate to avoid using the name "3D" and "4D" if it will use "5Ds" instead.

It went from having (1D, 1Ds) -> 1DX to deal with market confusion.

Why does Canon believe going from 5D3 -> (5Ds, 5D4) won't create new market confusion?

Hasn't it learnt from the sins of the past?

I'm wondering why Canon haven't considered using X in the 5D name.
A 5D mk IV for the current lineage of camera. Mid density sensor - fast frame rate - uber versatile and fully featured spec and AF. So basically a un upgrade of the existing 5DIII.
Then a second camera - a 5Dx mk IV to sit in a niche next to the existing camera linage with a high MP, low frame rate camera which is basically the 5D4 but with an exchange of MP for frame rate. Don't bother with an AA filter for this puppy.
It makes sense to me...personally...my 5DIII's are doing a great job. A 5D4 needs some killer features for me to consider upgrading. Which at the moment, I don't have an obvious need.

5
Lenses / Re: 50 f/1.2L problems applicable to 85 f/1.2L?
« on: January 06, 2015, 06:51:30 AM »
2007 is old like a dinosaur in this digital era. I simply hope canon will, in a near future, answer the Otus 55.  ;)

If 2007 is a dinosaur, I guess 1996 is primordial ooze?  Shhhh...don't tell the 135mm f/2L, it might stop being such an excellent lens.  ;)

And the Otus / Sigma isn't much more complex than the 135L either. It's comparably sized and contains simular amounts of glass. So I assume Canon's drive when designing the 50L and 50 f1.4 was a size and weight reduction over the 50mm f1.0 L. lets face it, the 50mm f1.4 USM is small and light. The 50L f1.2 is comparibly small and light....the otus is actually quite big and heavy and pretty much the same size and weight of the 135L.

6
EOS Bodies / Re: Speculate: How much noise improvement from 5D3 to 5D4?
« on: January 06, 2015, 06:43:09 AM »
High ISO noise or low ISO noise?

High ISO noise maybe 1/2 stop better

Low ISO noise has a lot of room for improvement. If we are luckly (not sure atm), it could be 3-4 stops better  :-X :-X :-X If not, then it's 0 stop, which means no improvement :'(

Or if Canon can employ the on sensor, dual gain ADC, then it will be 5 stops better. One could dream...  ???

However I've already given up on chasing the shadow pushing mania. Even if it's clean when pushed 5 stops, the tonal range is severely limited. Better learn how to properly bracket and merge. Unless someone uses 16-bit ADC (or more) and gamma mapped raw encoding, bracket is a better option.

What he said....a lot of truth here.

7
EOS Bodies / Re: Wait for it ... Revolutionary or Evolutionary in 2015
« on: January 06, 2015, 06:41:17 AM »
Will 2015 be the year when we see remarkable changes from Canon, Nikon, Sony, Fuji and others?

I'm thinking revolutionary as manufacturers fight to differentiate themselves with bigger MP, greater DR, retro styling, form factor, medium format bridge cameras, cheaper higher quality lenses, mirrorless, compact but capable, and weather capable equipment.

Share your thoughts!

The problem with revolutionary changes is that they often leave existing user bases under whelmed or supported...just look at Windows 8. Microsoft went after a whole new concept completely leaving their existing corporate user base out in the cold.

Steady evolution is better for both the consumer and the corporation. Go compared a 20D to a 5DIII and see what a few years of development can do for a market placed camera.

8
EOS Bodies / Re: EOS 6D Mark II to Move Upmarket? [CR1]
« on: January 06, 2015, 06:37:53 AM »
Again, if you just read your own posts while taking an outsiders perspective you'll see one glaring trend...Canon doesn't make one camera to rule them all. Each camera is for a market or for a level. I've recently become more vocal as evidenced in my new membership here because it's time to finally react like a market. At any point in time, Canon or Nikon could easily slay the entire industry if they would just create one killer camera that is untouchable and price it to slay all others. Canon is too risk averse.

Actually, I think that Canon makes the most versatile DSLR cameras than any other brand...the 7DII, 5DIII and 1DX are fine examples of this. There is nothing from Nikon or other brands which comes close to the versatility which these two cameras offer. They excel in pretty much every thing a photographer could need or want. But if you are looking for a 35+mp camera....sorry but you are in the minority and therefore a niche market. Sure other cameras may have a single spec which is more dominant....but again that's a single feature swing into niche land.

9
Lenses / Re: Introducing the Canon EF 100-400 f/4.5-5.6L IS II
« on: January 06, 2015, 06:33:36 AM »
I think apart from a rotating zoom (to which people seem to have mixed feelings) the usability with the TCs as confirmed by the MTFs, a reliable and more powerful IS, along with the much improved IQ is a sufficiently good reason for the widespread welcome this lens is getting.

Seems like the only thing missing is the much improved IQ.  Roger's initial, cursory tests over at the rental place indicate it's only around 4% sharper on average.  Of course there are other IQ considerations like flare, CA, distortion, contrast, color reproduction, etc., but 4% better sharpness isn't exactly a slam dunk.   ???

To be clear, I'm looking forward to getting this guy and I want to love the heck out of every aspect of it.  But 4% pales in comparison to the 40% improvement of the 400 DO II over its predecessor.

As I keep telling people, the old one was very good optically, but only under ideal conditions (IS off or stopped down a stop).  The new one seems to be massively better under regular high stress conditions (wide oopen with the IS in, and in resisting flare and CA.

My 100-400 was very sharp.  I think a key criterion for the MkII will be performance with the 1.4xIII, given the availability of f/8 AF on multiple bodies including the 7DII.  The MkI didn't take a TC well.  Given the 3rd party 150-600 options which are substantially larger and heavier, a lighter, more easily transportable 560mm f/8 would be a great option.  Looking at the TDP crops, the 100-400 II takes a 1.4x quite well, and the resulting combo delivers better IQ than the Tamron 150-600 @ 600mm.
Yep, my experience with the mkI was that it's weakest points were it's bokeh when compared to the 400 f5.6L prime and it's pedestrian AF speed in anything other than bright light. It's optical performance (with a good sample) was excellent. I didn't particularly like the tripod collar placement when on a tripod racked out to 400mm, which still looks to be the case with the new one...but at least the old issues have been more than rectified.
Like all the recent mkII models from Canon. There's probably not enough to justify buying the mkII if you already have a great copy of the mkI....but if you don't already have one or it's a bit iffy...then they mkII makes a lot of sense.

10
My wife and I are both into wildlife and bird photography.  She keeps taking my EF400 f/5.6L and I and up using my EF 70-300L.  I have been debating whether to buy another EF400 f/5.6 or the new 100-400 Zoom.  I really like the EF400 f/5.6 however I was hesitant to buy a duplicate lens.  Also the EF400 has a long minimum focus.  Finally pulled the trigger on the new zoom this morning due to IS, shorter minimum focus and versatility.  If it is as sharp as the 400 I will be a happy camper.  Just hope that Adorama doesn't surprise me with a back order.

The only area two areas the prime can excel in over the new zoom is a slightly longer focal length. The prime has a real world 400mm against the zooms real world 380mm. And lightness. The prime is a lot lighter in weight and the zoom. Most users of the zoom will be racking out to the long end anyhow, so the improved AF speed should match the prime. The new IS will be a nice feature, but not so useful for Birds in Flight. The improved Min Focus distance will be nice for close up portraits of birds and the like (which I currently do with a 70-200 f2.8 LIS II and a tele converter). Only you can say if these features are worth the cost of replacement.

11
Lenses / Re: Yongnuo EF YN 50mm F/1.8
« on: January 05, 2015, 11:01:56 AM »
Confirmed: is not a complete clone of the Canon!

The bokeh on these shots is beautiful, but for some shots, a deeper dof might make sense :-> as the lens parts in the back cannot be recognized.

Also, some bad news?

Welcome to the world of Yongnuo! After a very bad experience with my st-e3 rt "clone", I know they're selling products they know won't work as advertised - like the af assist beam on said transmitter. And I've not even started talking about qc...

Everyone seems to forget that the Canon 50mm f1.8 has beautiful bokeh when shot wide open. It's got a circular "straight though" light path. The only issues occur when it's stopped down and the low number of straight edged aperture blades comes into play.

12
Tried both a Sigma & Canon 1.4 converter with my Bigma 50-500mm and neither got the autofocus to work (the Canon didn't even fit the lens!), so has anyone tried a Kenko 1.4 converter with this lens/camera combo and got the autofocus to work ?

(the 7dii is meant to auto-focus at f8 and I know the Bigma is actually a 6.3 but pretends its a 5.6 to get the autofocus to work)

Thanks,

Ashley

I found the 50-500 bigma slightly soft when shooting wide open at 500mm on a full frame. So putting it on a 1.6x crop and slotting a 1.4x tc isn't going to improve it's softness at all. To be honest, I think you are asking too much from this lens. Good luck with even getting that combo to AF accurately even in bright light. Even more good luck in getting it stable on a tripod with those kinds of focal lengths. 

13
Lenses / Re: Sigma 14-24mm OS lens at Photokina?
« on: January 05, 2015, 10:53:45 AM »
Oh snap.  Ultrawiders who really want 14mm on a zoom might be happy to see this rumor...

http://photorumors.com/2014/08/14/sigma-lenses-rumored-for-photokina-24mm-f1-4-art-and-14-24mm-f4-with-os/

...but I think someone will complain about not having f/2.8 before anyone can say woohoo to a 14-24 lens.

- A

I am more interested in seeing the 135mm f/1.8 DG OS, 85mm f/1.4 DG and 24mm f/1.4 DG Art lenses. These will have an enormous impact on Canon (and also Nikon).
I had the curren Sigma 85mm f/1.4 and only sold it because I needed money and haven't purchased it again waiting to see if Sigma refresh it. Hopefully, the 135mm and 24mm will be priced well below Canon ones.

I love Sigma's Art lenses.  I'm with you on these two, although I'd prefer seeing the 85/1.4 come out first simply because the very good Canon 135 is pretty inexpensive.  I'd sell my Canon copy if the Sigma Art lens is good, however.

The only other amazing 85 is Canon's, and that's $2100.  Unngh...

Yes, from my long experience with Sigma...quality control and focusing accuracy is a lottery.

14
Lenses / Re: TDP Results for 7D MK II and 100-400mmL MK II
« on: January 05, 2015, 10:51:24 AM »
Its interesting to compare the lens at 400mm on the 7D MK II wide open at f/5.6 versus wide open on a 1Ds MK III with 1.4X TC.  Note, the lens is better wide open than stopped down, and matches the FF in the corner, but not quite in the center when wide open.
 
 
The images are very carefully set up and manually focused to be the best the camera can do.  The 7D MK II is a hair better than the 60D, since it has a few more MP, the improvement is proportional.
 
 
I wish he had included the 1D MK IV in those tests.
 
 
 
7D MK II at 400mm f/5.6 (center)
 

 
 
7D MK II at 400mm f/5.6 (corner)
 

 
1DS MK III  with 1.4X TC wide open - f/8 (center)
 

 
 
1DS MK III  with 1.4X TC wide open - f/8 (corner)
 
 


This will make zero noticeable difference in real world photos unless you are shooting lens charts in a lab.
I'm pretty confident in saying both the new 100-400L and the 7DII will sell very well for Canon and for good reason.

15
Lenses / Re: Where are the new Canon 50mm and 85mm lenses?
« on: January 05, 2015, 10:48:54 AM »
The Canon 50mm primes are the most disappointing set of lenses in Canon's portfolio. I've owned and used professionally every one of them except the 50mm f1.0 L and all of them have been disappointing when compared to the results from other Canon prime lenses. The build of a 50mm f1.2 L is impressive and it's a great lens, but it's just not as sharp as it's price tag would indicate (even stopped down). Shortly after it was released it's new value plummetted and stayed quite low for a long time. Then one day Canon raised it's prices and bumped it's price point because it was erm...f1.2 and therefore worth more. The saddest thing is that it's really tricky lens to use and one which most people go for if they are dabbling with a pro prime lens itch. The 35L and 85IIL are far better performing lenses. 

I'm sure that Canon have a new set of 50's in development, but when is anyone's guess. 

As to 85mm lenses....Canon already have those covered and they are both awesome.

Pages: [1] 2 3 ... 50