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  1. #1
    Join Date
    Jun 2008
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    Tamron 70-200/2.8 Side by Side Comparrisons?

    Okay you know who you are.... ahem.... don and sean! Would either or both of you mind posting your results comparing the lenses side by side on like 2.8 or some consistent setting outdoors or indoors? I'd like a 100% crop comparison with maybe the Sony 135/1.8 and Tamron 90/2.8 don if you don't mind . I'm just trying to get an idea of how well this thing performs. I'm almost 100% it will be my next lens! And sean, maybe you could compare it to the 70-300 side by side?

    I'd really appreciate it.

    If not, oh wells lol. There's always the paint bucket at dyxum I can look at!

    http://www.dyxum.com/dforum/forum_posts.asp?TID=36384
    flickr

    Canon 7D - 5D | 550EX - 430EX II - (2) PW FlexTT5 | 24-105 f4L | 70-200 f2.8L IS | 100 f2.8L IS | 50 f1.8 II

  2. #2
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
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    Cool Image evaluations ... cont'd

    Well ... in response to your request ... for the images I have taken already ... the TAMRON SP AF 70-200mm f/2.8 Di LD (IF) MACRO is as good or better than 90% of my lenses. It's biggest drawback is that it is not super fast to focus. But IQ-wise ... I have to say it is nearly as good as the SONY CZ 135mm f/1.8 ... at f/2.8. The 'CZ' is still a rocket focus, to be sure.

    It was that test told me that the T70-200 was hot, to be sure.

    The 90mm shot is really a toss-up, because it depends on the focusing distance. The TAMRON SP AF 90mm F/2.8 Di LD MACRO can focus to about an inch in front of the lens ... super sharp ... while the 70-200mm f/2.8 requires about 38-inches, minimum.

    Now, compared to the SONY 70-200mm f/2.8 G SSM, which requires nearly a full five-feet, that's a heck of a reduction in minimum focus distance (MFD). When shooting indoors ... that can be a real deal breaker.

    I will try to shoot something, in short order ... with a really decent comparison test. Just realize that there is simply no way I am going to be able to shoot anything closer than three feet, for a true side-by-side.

    BTW: the MFD of the CZ 135mm f/1.8 is about two feet.


    While I would prefer waiting until the α700 returns from its repair, I will use the α100 to do these shots.
    Last edited by DonSchap; 10-02-2008 at 11:24 PM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  3. #3
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
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    Smile a couple quick shots ... just to see

    Okay ... just to satisfy you quickly, here are some rather simple quick shots ... Manual setting ... to maintain exposure. They aren't pretty, but they expose short falls of the lens under similar conditions (f/2.8).



    Subject: Cardboard box for LCD Monitor. (Distance = 7-feet)

    Common Settings:

    Handheld - SSS "on"
    Aperture: f/2.8
    Shutter Speed: 1/60 sec
    ISO: 400
    Contrast +2
    Sharpness +2
    Flash Compensation: +2EV (Shows defects better)
    Pop-up flash
    WB: Flash -1

    Original CZ 135 f/1.8 lens shot (resized)
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    CZ 135 f/1.8 lens (100% crop)
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    T70-200 f/2.8 lens @ ~135mm (indicated) (100% crop)
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    Original T90 f/2.8 lens shot (resized)
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    T90 f/2.8 lens
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    T70-200 f/2.8 lens @ ~90mm (indicated)
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    I won't shoot against my TAMRON 70-300, because it does not have the 3 ADI contacts in the lens, so you would get different flash info to the pop-up between the two lenses. Also, shooting f/4 @ 90mm (f/4.5 @ 135mm) really tightens up the DOF, to where it is not in play.

    Regarding the lenses evaluation ... confusing, ain't it?

    Personally ... these results may not be as colorful as the "paint bucket", but they are exceptionally close to one another when you consider you are comparing prime lenses to a zoom lens.

    If I didn't already have the primes, this lens would have made me think twice. Okay ... enough of that kind of thinking. I'm sure we ALL agree that you can never have enough glass. LOL

    Nah, the 90mm MACRO lens does a completely different job ... so I would still have it. The CZ 135mm f/1.8, on the other hand ... I probably would waited a bit longer on getting. It is great for those fast sports shots ... but, you have to dig a lot deeper than the 70-200 f/2.8 costs you. You have to remember, I have waited a long time (over two years, when I found out that TAMRON was building it) to finally get my hands on the T70-200mm f/2.8. Heck, it's only a week or two old. My impatience has had a price ... let me tell ya.
    Last edited by DonSchap; 10-03-2008 at 12:54 AM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  4. #4
    Join Date
    Jun 2008
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    2,204
    Great, pretty much what I had in mind! Is that a new toy also? (The monitor?) I recall seeing a CRT not too long ago. That must be one BEASTLY monitor (for color reproduction, photos, etc....) since it's an IPS Panel!
    http://lcd24-7.info/Monitor/NEC/Mult...i/Default.aspx

    I went cheap and got a 24" TN Panel lol. Games are my priority and it was on sale last year. Couldn't resist 1920x1200 pixels!

    Anyways, I didn't realize there was so much CA. Guess in the field, it would probably be minimized depending on subject since there isn't always that strong white/black contrast.

    I figured this ranks pretty high among your stacks of glass don . Another surprising fact is the MFD of the Sony, wow....

    Thanks as always don!

    Oh yeah, what's the optimum apertures for the lens? Something like f4-5.6? or possible f8? According to SLR gear, the Sony G SSM seems to be around F/5.6.
    flickr

    Canon 7D - 5D | 550EX - 430EX II - (2) PW FlexTT5 | 24-105 f4L | 70-200 f2.8L IS | 100 f2.8L IS | 50 f1.8 II

  5. #5
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
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    Red face Another look ...

    I don't usually worry about "sweet spot" aperture, because I shoot for the lighting, action or the bokeh, usually. At f/5.6, you don't get much in the way of DOF change. Oh sure, maybe at 30 feet or so ... but, that's half the magic of having a wide f/2.8 (or wider) aperture available to you.

    Perhaps, one day ... I may look for it, but it rarely has been of great concern. Must be people who don't have a lot to do, huh?

    Look, CA is often more present at the wider apertures. Once you tighten up ... (f/4+) it usually get's resolved. I figure that you might have wanted to see where the lens' weak spot is ... they all have them. Still, I'd rather shoot this version for that comfortable price of $699, than anything else. LOL

    Okay ... here is a series using the SONY HVL-F56AM (external flash) in TTL mode. It does make a big difference in result, in my estimation. I mean ... look at that exposure control over what the pop-up provided. Wicked difference for a silly cardboard box, eh? Just imagine what that kind of light could do for your more interesting images ...

    135mm f/2.8 (100% crop)
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    135mm f/6.3 (100% crop)
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    135mm f/16 (100% crop)
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    Like I've said, I've never been a big fan of the pop-up flash. Also, DOF (@ f/2.8) is noticeably affected as the front plane of this box is at a 10-degree angle to my camera lens.
    Last edited by DonSchap; 10-03-2008 at 02:16 AM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  6. #6
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
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    In summation ... the image quality, as I have demonstrated .... is affected not only by the lens, but by the lighting offered. The pop-up's splash was very harsh. The external flash was far more controlled and you can actually see the grain of the paper.

    Same lens ... same distance ... just slightly different lighting, using the same TTL control circuitry in the camera. In other words, forget the pop-up and buy a good flash! It has to improve your shot, right? RIGHT???!?!?? Darn tootin'!

    And let's face it ... if you have gone to the level of buying a 70-200 f/2.8 lens over a 70-300 f/4-5.6 for your camera ... then give it a dynamite flash to make it sparkle. You are into an improved quality shot, at this point ... and that takes a bit more con$ideration.
    Last edited by DonSchap; 10-03-2008 at 02:21 AM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  7. #7
    Join Date
    Jun 2008
    Posts
    2,204
    Indeed it does! Thanks for the followup results! This is definitely going to be my next lens and a flash!

    So, that a new monitor?
    flickr

    Canon 7D - 5D | 550EX - 430EX II - (2) PW FlexTT5 | 24-105 f4L | 70-200 f2.8L IS | 100 f2.8L IS | 50 f1.8 II

  8. #8
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
    Posts
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    I got it back in June, as one of my twin CRTs winked out of existance. I had purchased both at the same time ... so I retired the second one and I replaced the two with a calibratable LCD ...the largest that I thought that would be practical. It is extremely bright ... and that complicates adjustment.

    Name:  LCD-screen.jpg
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    It also rotates to vertical ... which is a cool function when you are presenting portraits.

    I have to stuff the container box, one of these days. Reorganize the garage for the upcoming winter. It's a process.
    Last edited by DonSchap; 10-03-2008 at 08:53 AM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  9. #9
    Join Date
    Jun 2008
    Posts
    2,204
    NICE! 24" is the way to go!
    flickr

    Canon 7D - 5D | 550EX - 430EX II - (2) PW FlexTT5 | 24-105 f4L | 70-200 f2.8L IS | 100 f2.8L IS | 50 f1.8 II

  10. #10
    Join Date
    Jan 2008
    Location
    Ohio, USA.
    Posts
    1,161
    Ok I will get some more shots up! Busy busy here LOL. this weekend is our towns fall festivel, was going to use the 17-50 and the 50 prime all weekend for some streetlife, and candids, don't want the little glass to feel left out! Don maybe we can figure out something common that we can both shoot the exact same object under close to same conditions, give it some thought. Has anyone used or heard much about the tamron sp 180mm? I had thought maybe of getting it instead of the 90mm, or skip them both and pop for the CZ 135, man that would be a sweet lens for me, and would rock on indoor sports I think. And yea flash unit will be soon, basketball starts in a couple weeks!
    Sony A700_____________Minolta AF 50mm. F/1.7
    Minolta AF 70-210mm F/3.5-4.5 Tamron AF 17-50mm F/2.8 XR DiII LD Asp. [IF]
    Tamron SP AF 70-200mm. F/2.8 DI LD [IF] Macro
    Tamron AF 70-300mm F/4-5.6 Di LD Macro 1:2
    Tokina AF 28-70mm F/3.5-4.5
    Tokina AF AT-X 80-400mm F/4.5-5.6
    http://flickr.com/

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