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Respected Contributor
Posts: 1,967
Registered: ‎02-26-2015

Re: 7DM2 Lens Aberration Correction does it affect RAW image or just jpegs?


@ebiggs1 wrote:

"That degree of improvement just isn't there when using Adobe products."

 

Well at least you do admit there is an improvement.  The amount, "degree", of improvement is subjective, I guess.  Not to me and the rest of the industry but we will just have to disagree on that part.

 

"... there is little difference between lenses like the EF 70-200 f/2.8 (original) and the Sigma 70-200 f/2.8 HSM without DLO, ..."

 

We will have to disagree on this point too.  But I actually can't believe you or anybody would say this.  Without any lens correction just lab measurements alone the Canon can resolve 18M-Pix while the Siggy a mere 14M-Pix.  In the world of photography you have to know that is a monumental difference.  I have and use all three of the 70-200mm f2.8 lenses (Canon, SIgma and Tamron) and there is a huge difference.

 

Unfortunately the RAW converter of either DPP4 or ACR9 is a fact of life and can not be eliminated from the equation.  And if you are not shooting RAW, you are not likely too interested in the highest quality photos in the first place.  So Raw is what it is and has to be involved. It doesn't look like either of us is going to be dissuaded.

 

I assume you believe you picked the bird done with ACR9.  Most people would!

 

"I always considered the EF 24-105 f/4L IS a mediocre lens, ..."    It is a mediocre lens but performs its place in life fairly well.  You will have to show me a "wow" from it.  Please u/l a example here to the site.


Are you talking about the EF 70-200 f/2.8L IS II or the EF 70-200 f/2.8L, that I was talking about?

I would suggest you take a photo that you took with the EF 24-105 f/4L and try using DLO and see the difference for yourself.

Respected Contributor
Posts: 1,967
Registered: ‎02-26-2015

Re: 7DM2 Lens Aberration Correction does it affect RAW image or just jpegs?


@ebiggs1 wrote:

 

 

"... there is little difference between lenses like the EF 70-200 f/2.8 (original) and the Sigma 70-200 f/2.8 HSM without DLO, ..."

 

We will have to disagree on this point too.  But I actually can't believe you or anybody would say this.  Without any lens correction just lab measurements alone the Canon can resolve 18M-Pix while the Siggy a mere 14M-Pix.  In the world of photography you have to know that is a monumental difference.  I have and use all three of the 70-200mm f2.8 lenses (Canon, SIgma and Tamron) and there is a huge difference.

 


Since you appear to be quoting perceptual megapixels used by a certain review site. They say on a 7D Mk II the Sigma 70-200 f/2.8 HSM II and the EF 70-200 f/2.8L both resolve the same 8 P-Mpix. Distortion and Vignetting are also the same. T-Stop differes by point one with the nod to the Canon. Where the Canon does win out over the Siggy is in CA.

 

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VIP
Posts: 11,505
Registered: ‎12-07-2012

Re: 7DM2 Lens Aberration Correction does it affect RAW image or just jpegs?

"I would suggest you take a photo that you took with the EF 24-105 f/4L and try using DLO and see the difference for yourself."

 

I have.  This is my "hobby" now in retirement.  I enjoy doing this kinda stuff since I have no pressure on me to produce anymore.  That is why I want to see exactly what you mean by "wow" in difference.  If you can't I understand.

EOS 1DX and 1D Mk IV and several lenses!
VIP
Posts: 11,505
Registered: ‎12-07-2012

Re: 7DM2 Lens Aberration Correction does it affect RAW image or just jpegs?

"Since you appear to be quoting perceptual megapixels used by a certain review site."

 

Yes sir you are correct there.  I have stated many times I do not like or use that site very often but some lab measurements can be telling.  I am comparing the newest versions of each lens.  That is what I have in my hands and what I actually use.  I use them primarily on my 1Ds Mk III.  That is the camera I use to judge my conclusions on.  Since my retirement I have probably bought and sold three dozen lenses.  But in this case, the Siggy and the Canon I have kept.  I will never sell the Canon.  It is that good.  I have about six or seven lenses that have found a permanent home.

 

If you are a fan of 'that site' did you read their conclusion .....

"Even though the competition still beats the Sigma 70-200mm across the board (as noted above), when we compare the newer version versus the older version of the same Sigma lens, ..."

 

BTW, if you want the best third party 70-200mm f2.8 it is without a bit of doubt the Tamron version that is labeled A009.  Not there first atempt of a 70-200.  This is not any web sites opinion.  That is mine, with hands on use.

 

Again if you have examples of what you say, I would love to see them.  This is my thing right now.  I am truly interested in what you may have found.  Show me!  Give me samples where DLO is better than ACR.

EOS 1DX and 1D Mk IV and several lenses!
Respected Contributor
Posts: 1,967
Registered: ‎02-26-2015

Re: 7DM2 Lens Aberration Correction does it affect RAW image or just jpegs?

[ Edited ]

@ebiggs1 wrote:

 

 

 

Again if you have examples of what you say, I would love to see them.  This is my thing right now.  I am truly interested in what you may have found.  Show me!  Give me samples where DLO is better than ACR.


My posting two or three pictures really doesn't show anything. There are too many varibles in RAW conversion for anyone to post two meaningful photos.

 

Just like your bird photos, the one processed with the Adobe product could be made to look like the one processed in Canon Digital Photo Professional and visa versa. That only shows you like the default values of one product over the other.

 

The same applies to DLO and Adobes lens correction tools. The only way for you to see what DLO can do is to take your own photos and experiment with different strength settings. Just like I never leave the sharpening mask in LR at its default, I typically don't leave the DLO setting at its default. 

Respected Contributor
Posts: 1,967
Registered: ‎02-26-2015

Re: 7DM2 Lens Aberration Correction does it affect RAW image or just jpegs?


@ebiggs1 wrote:

"Since you appear to be quoting perceptual megapixels used by a certain review site."

 

Yes sir you are correct there.  I have stated many times I do not like or use that site very often but some lab measurements can be telling.  I am comparing the newest versions of each lens.  That is what I have in my hands and what I actually use.  I use them primarily on my 1Ds Mk III.  That is the camera I use to judge my conclusions on.  Since my retirement I have probably bought and sold three dozen lenses.  But in this case, the Siggy and the Canon I have kept.  I will never sell the Canon.  It is that good.  I have about six or seven lenses that have found a permanent home.

 

If you are a fan of 'that site' did you read their conclusion .....

"Even though the competition still beats the Sigma 70-200mm across the board (as noted above), when we compare the newer version versus the older version of the same Sigma lens, ..."

 

BTW, if you want the best third party 70-200mm f2.8 it is without a bit of doubt the Tamron version that is labeled A009.  Not there first atempt of a 70-200.  This is not any web sites opinion.  That is mine, with hands on use.

 


My original statement was 

. . . since Canon's release of DLO, I wish I had spent the extra money on Canon lenses. While there is little difference between lenses like the EF 70-200 f/2.8 (original) and the Sigma 70-200 f/2.8 HSM without DLO, when DLO is applied there is a noticeable improvement for the EF lenses. That degree of improvement just isn't there when using Adobe products. 

 

If I were starting over knowing what I know now, I would have stuck with Canon lenses, and forgone the third party lenses. 

 

I was specifically talking about a lens purchase decision I made. And how Canon's release of Digital Lens Optimizer would have changed my decision process if I were to do it again. At the time in the mid to late 2000's there didn't seem to be a reason to spend the extra money on the Canon version, the Sigma version was just as good on MY camera, better according to another popular digital photography review site. 

 

Yes, Canon's second generation IS L lenses are unparalleled. And, even Canon's consumer STM lens of today hold up very well when compared to older L lenses and third party lenses. But, that fact completely misses the point I was making.

VIP
Posts: 11,505
Registered: ‎12-07-2012

Re: 7DM2 Lens Aberration Correction does it affect RAW image or just jpegs?

Actually I thought I had found a person that liked to share this type photography past time and back and forth but apparently not.

I fully understand if you don't want to do so.

EOS 1DX and 1D Mk IV and several lenses!
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