October 24, 2014, 08:55:12 PM

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Messages - privatebydesign

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16
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 17, 2014, 07:07:56 PM »
I'm not seeing any real difference in any of the pairs. Doesn't that kind of support the other side  ???

Again I'll say if you're cropping in so much that you're left with like 3 MP from the FF file...and you have to make a larger print...crop wins. You simply run out of pixels otherwise. But that's rare.

The flip side is that the same thing happens when you honestly compare FF vs. crop, same FoV and print size and all of their pixels, at low to mid ISO. A landscape photo with an 11mm on crop and a 17mm on FF. OOC you can see a difference, but after post processing...good luck telling them apart, even at 36". In fairness, in difficult situations FF files can take harder processing, but you can push a crop 14-bit RAW pretty hard as well.

Even high ISO at smaller print sizes is becoming more difficult to discern, though ISOs like 6400 and 12800 still clearly show off FF's light gathering advantage. But if Scott Kelby's samples are any indication...a crop 7D mark II will be usable at 16,000 for an 8x10. FF would look better even at 8x10 at that ISO, but how much better? It's ridiculous how good we have it.

We are far too concerned with minutia at a time when equipment is...by a wide margin...the best it has ever been.

But that isn't what my original crops, or the gif show. They are 100% and >100% crops and there is nothing in it.

17
Technical Support / Re: Canon 24mm TS-E Mark II Tilt Knob Replacement
« on: October 17, 2014, 05:57:17 PM »
John,

Can you post a picture? Has the shaft gone or just the external knob?

18
Third Party Manufacturers / Re: Yongnuo YN600EX-RT now available for $186
« on: October 17, 2014, 05:10:12 PM »
How well does the Canon's AF assist work? :)

Point taken, but as it turned out Yn's af assist performance in real world use is 100% up on par with the Canon :-p

The 600-EX-RT AF assist works very very well, obviously the joke was on the ST-E3-RT AF assist being non existent, but we are onto the YN-600-RT now, and I am sure the assist on that will not be anywhere near as good as the Canon version.

Most of you know what I think of the YN-E3-RT, if anybody wants mine drop me a PM!

19
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 17, 2014, 04:45:10 PM »
Your copies look very soft to me, compared to mine. Do the curve layer makes the images soft?
Comparing soft images makes no sense to me...

That is because I resized the gif, here it is unresized, I guarantee nobody would get it right now without guessing even at 100% and above.

P.S. The 'sharper' one is the 1D MkIV with a fraction of sharpening.......

20
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 17, 2014, 03:11:21 PM »
Anyway, unlike some, I find the extra "reach" to be real and advantageous.

Got any comparison images to back that up Bob?
I have both the 7D and 1D4, and they are same generation sensors.
I have done several tests between these body's, and in my opinion the reach advantage for 7D is quite clear.
Especially using sharp lenses.
Here is 100% Crop from 7D vs upscaled Crop from 1D4, both iso 800:

So you would have no problems picking out which of these two frames in the gif of your two images came from which camera?

All I did was apply a curves layer to even up the lighting a bit, no sharpening or other forms of optimisation.

I think your evidence actually supports the other side of the argument, if you didn'y know the colour and contrast of each frame, ie they were shot better, I doubt anybody could tell the difference, and these are at 100% and >100%, at normal reproduction sizes I doubt if ever.

21
To the 5D-III punters... I can understand how the 5D-III can replace the 6D, but how exactly does the 5D-III replace a 7D-II?

Apart from fps what doesn't the 5D MkIII do that the 7D MkII can?

That fluttering light thing?

Is that it?

I wouldn't know, I don't have either but both of them would be important things to me.

I don't have either, either, and won't be getting either. But I am surprised that those two things are the only things that anyone can think of.

Whilst I won't belittle those two features for those that do need them, I can't help but feel most of us don't!

22
To the 5D-III punters... I can understand how the 5D-III can replace the 6D, but how exactly does the 5D-III replace a 7D-II?

Apart from fps what doesn't the 5D MkIII do that the 7D MkII can?

That fluttering light thing?

Is that it?

23
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 17, 2014, 12:54:53 PM »
And yet, you are "not seeing that much difference." 
The discussions in many of the FF vs APS-C threads could lead one to believe that the FF is always superior so I'm thinking "not much difference" is pretty good.

The general response is that in focal length-limited scenarios, the crop sensor is better.  It can be, if you're FL-limited and at low ISO and printing larger than 16x24"/A2. 

Or cropping heavily.  Some of my final shots were shot on crop bodies with 400mm lenses and are cropped to 1:1 in the final.  I often find that I don't have enough pixels left after cropping my 20D.  That's why the full-frame options don't interest me for this - none of them would give me more pixels left on the target than my 20D does, and some like the 1Dx would give me fewer pixels.  The 7D II will give me 2.5 times more pixels left than my 20D does for the same cropping.

agreed!

Using the same lens, an individual FF pixel is of better quality than an individual crop pixel, but in focal length limited scenarios there are more crop pixels on target. The quality difference between the two sizes also depends heavily on the lens used. On a very sharp lens, the difference is lower, but on a poor lens the difference per pixel can be striking...

My tests earlier between a 60D and a 5D2 showed that with a poor lens (Sigma 120-400) that there was no reach advantage for crop, yet when used with a 70-200 or a 100L there was definitely an improvement in reach.

Which one is better depends on your needs and your glass.... there is no universal answer.

My crops are upressed to the same size and shot with one of the sharpest lenses Canon make at an optimal aperture. Over 50% of the pixels in the FF crop are 'made up', yet they still give very little away to the crop cameras native pixels.

Hey, at least we are talking about the sales pitch now rather than just buying into it............

24
To the 5D-III punters... I can understand how the 5D-III can replace the 6D, but how exactly does the 5D-III replace a 7D-II?

Apart from fps what doesn't the 5D MkIII do that the 7D MkII can?

25
EOS Bodies - For Stills / Re: Hello FF!
« on: October 17, 2014, 10:42:00 AM »
6D is a much better buy than a secondhand 5D MkII.

Does that make me a 'looser' too?

26
6D.

You will then realise the 'limitations' of crop cameras (for pixel peepers and big printers) and realise you need a 6D and 5D MkIII, mind you, by the time you have the 5D MkIII money saved you will be in used 1DX territory money wise.........

GAS is a rarely tamed affliction.

27
Yes an f2.8 is an f2.8, but the term equivalent was used and if you do that for focal length it is disingenuous to not also do it for aperture, after all the focal length doesn't change either.

The word equivalent is pretty much universally used to compare focal length, I don't see an issue with that. DPR, LL and a host of other review sites use it.

Er, no it isn't. It is used regularly by bad photography journalists who are too damn lazy to be accurate and are looking for any excuse to get a job in auto journalism, and by marketing departments who know very well how misleading it is and don't care to be honest with their consumers.

Take a look here for the true meaning of equivalent with regards photography http://www.josephjamesphotography.com/equivalence/

28
Yes an f2.8 is an f2.8, but the term equivalent was used and if you do that for focal length it is disingenuous to not also do it for aperture, after all the focal length doesn't change either.

29
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 16, 2014, 05:23:20 PM »
"You missed a big point in the crops jepast. The FF crop is upsized to 18MP, there is no 18mp - 8mp advantage, I am, effectively, 'giving up' nothing."


If you think you are giving up nothing go take both cameras, put on an identical lens and take a picture of an object that is far away, proceed to crop the shot from the 5DMIII to match the shot from the 7D, and then print them both at 30"x40"...

You need your empirical evidence, go do that.

I did, and I am showing you a crop of over 100% magnification of that print file.

I used the same 300mm f2.8 IS on both cameras (actually I left the lens on the tripod and just changed bodies where it was), manual focus via live view, f5.6, iso200 (which favours the crop camera), wireless flash for maximum contrast, massive tripod, cable release etc etc.

30
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 16, 2014, 04:54:23 PM »
this whole topic should be about which camera is better for shooting _________?
Decide what you are shooting, then you can decide what equipment is best for the job. There is no perfect tool.

That is what we are doing, I am just trying to make people actually look.

As for your image, so what? Explain my crops.
Nobody is saying your crops don't look good. I'm sure your cropped images look wonderful. Nobody is challenging that.  You are being so matter of fact and it does feel argumentative. 8mp images can look great of course, but we don't need to point out that 18mp has certain advantages over 8mp given certain circumstances. If we are just generating web content then the 8mp is more than enough... I happen to think that what you see, the images you love, are far more important than the math. So I applaud you for standing ground on empirical - what you see - evidence. That's what matters. The graphic I made was just to show what you are giving up.  Again, there is no -one size fits all tool.

You missed a big point in the crops jepast. The FF crop is upsized to 18MP, there is no 18mp - 8mp advantage, I am, effectively, 'giving up' nothing.

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