Quick comparison Tamron vs. Sigma "C" 150-600mm's (Page 3): Quick view I'd say the Sigma is slightly sharper at 600mm. But then I'm jaded because I had a very bad experience with...

jimmya Loc: Phoenix

MT Shooter wrote:

I had a customer asking about the image quality be... (show quote)

Quick view I'd say the Sigma is slightly sharper at 600mm.
But then I'm jaded because I had a very bad experience with Tamron and vowed I'd never go back.

mikedent Loc: Florida

Re: Sig "C" vs "S" - several reviews now online, seem to agree that except for added weight and better weatherproofing, the C is basically the same in picture quality as the $900 more S version. Just waiting for the Nikon mount!

Jim Bob

jerryc41 wrote:

Good news! A less than perfect monitor can save you a fortune in equipment. :D

Man, did you bring a smile to my face today. Unfortunately the sucky office monitor is not the one I use for serious photo work. My home monitor tends to reveal every flaw. Thanks for a good laugh.

CraigFair Loc: Santa Maria, CA.

MT Shooter wrote:

I had a customer asking about the image quality be... (show quote)

They are both a little soft which is to be expected at the max zoom 600mm and maxed at f/5.6.
The Tamron is shot at 1/750 & the Sigma at 1/1000 sec. Both at ISO 200. These are all settings I personally would not use for this shot.
I have to agree the Tamron does shot the more realistic color and the Sigma tends to enhance the colors.
Craig

SharpShooter Loc: NorCal

CraigFair wrote:

They are both a little soft which is to be expected at the max zoom 600mm and maxed at f/5.6.
The Tamron is shot at 1/750 & the Sigma at 1/1000 sec. Both at ISO 200. These are all settings I personally would not use for this shot.
I have to agree the Tamron does shot the more realistic color and the Sigma tends to enhance the colors.
Craig

The faster speed of the Sigma shot could EASILY skew the sharpness in favor of the Sigma! They should be the same and using a good tripod!
Better yet, put then both at ISO 400 and double the speed. Just saying. ;-)
SS

lighthouse Loc: No Fixed Abode

Jim Bob wrote:

Because you have an obvious bias. I would have thought that too would have been obvious.

Let me write it slower this time, so that you understand better.
How does having a bias, but ignoring that bias, and going in favour of the what the data tells me instead, threaten my credibility?
Having a bias does not undermine my credibility in anyway whatsoever.
Making decisions based on that bias would.
I would think that having a bias, and ignoring it in favour of the data, actually increases my credibility.

However, your credibility is undermined by you not being able to admit that you are wrong on this.
You have a bias to your original incorrect statement, and you are being influenced by that bias, and are still trying to back it up, trying to save face on your original big mouth statement, even though you are obviously wrong.
Your credibility is very much in question.

ggttc Loc: TN

lighthouse wrote:

Let me write it slower this time, so that you unde... (show quote)

This was a test by someone who actually knows what he is doing and you 2 idiots turn it an ego fest...really????

SharpShooter Loc: NorCal

Millismote wrote:

Mt, I enlarged both photos with download and the magnifier. I cropped both photos and It looks to me that the tamron is slightly sharper. "My opinion"

M, I'm just on my phone, but from what you have posted, the Tamron looks clearly sharper. The sigma looks slightly soft.
Is your crop at 100%?
We also have no idea if the focus points are on exactly the same spot. ;-)
SS

lighthouse Loc: No Fixed Abode

ggttc wrote:

This was a test by someone who actually knows what he is doing and you 2 idiots turn it an ego fest...really????

If someone dumps shit on me, I am going to defend myself and my position.
And now you abuse me for that, and you call me derogatory names.
I posted something and was attacked for it.
My credibility for even having an opinion was questioned, and now you have called me an idiot, and you want me to just sit by and not say anything?
I don't work like that.
Now @#$% off.

MT Shooter Loc: Montana

lighthouse wrote:

If someone dumps shit on me, I am going to defend myself and my position.
And now you abuse me for that, and you call me derogatory names.
I posted something and was attacked for it.
My credibility for even having an opinion was questioned, and now you have called me an idiot, and you want me to just sit by and not say anything?
I don't work like that.
Now @#$% off.

Hey, don't let the idiot jimbob get you upset. From his first day on the forum all he has done is stir up crap. He is one of our worst trolls. Just ignore his ignorance like most of the rest of us all do, he's not worth the grief.

lighthouse Loc: No Fixed Abode

SharpShooter wrote:

M, I'm just on my phone, but from what you have posted, the Tamron looks clearly sharper. The sigma looks slightly soft.
Is your crop at 100%?
We also have no idea if the focus points are on exactly the same spot. ;-)
SS

I don't know how you would be able to tell from your phone SS.
And yes there are questions about the methodology, ..... handheld, focus points, different shutter speeds. Jeffreys exif shows totally different DOF when it shouldn't be so it is giving some false data.
Only Carter knows the true numbers and areas and I do not doubt him.
As you are aware, from earlier in the thread, initially I thought the Tamron was sharper, and then on next look, it appeared the Sigma was. I checked it on a different pc last night with a better screen, and found different areas of both that appeared sharper, or better colour, or better contrast than the other.
So, honestly, I am having trouble telling which image is sharper/better, but there is one fact we do have to go on.
The customer bought the Sigma after checking the images out at 300%.

jethro779 Loc: Tucson, AZ

lighthouse wrote:

I don't know how you would be able to tell from yo... (show quote)

The thing that amazes me is that you can find sharp and soft in both photos. I would be happy with either lens. If fact in this case just flip a coin. My luck though is the coin would land on it's side and not on heads or tails.

Jim Bob

MT Shooter wrote:

Hey, don't let the idiot jimbob get you upset. From his first day on the forum all he has done is stir up crap. He is one of our worst trolls. Just ignore his ignorance like most of the rest of us all do, he's not worth the grief.

And you are? Could it be a case of sour grapes simply because, unlike many posters, I don't worship at the throne of MT Shooter?

Jim Bob

lighthouse wrote:

Let me write it slower this time, so that you unde... (show quote)

Writing slowly doesn't erase your bias just as saying the "N" word slowly doesn't erase racism.

joer Loc: Colorado/Illinois

MT Shooter wrote:

I had a customer asking about the image quality be... (show quote)

Really... what can one tell hand held viewing on a monitor. I'll wait for a more disciplined review with data.