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04-10-2008, 11:13 PM   #1
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Need help to identify Tamron 70-300mm!

Hi,

I was looking at this Tamron 70-300mm Di LD and found out that there is also LD version.
(Sorry if this has been discussed many times. I just got confused.)
Meanwhile, when I look at ebay, it seems that there are 2 different models of LD.
I believe LD is the older version but are there 2 models of LD version?

Thanks for your help.

04-10-2008, 11:22 PM   #2
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I think there are two types of Di Tamron lenses avaliabe:
1. Di LD
2. Di II LD (smaller image circle for crop sensors)

I don't know if there are actually two different models of 70-300 on the market or there are just mistakes in product descriptions of the sellers. I think there is only a Di LD type of 70-300 model.
You can check all lenses HERE
There is however a 75-300 model, which is called AF75-300mm F/4-5.6 LD Macro, but this is an older model, designed only for 35mm film cameras.
04-10-2008, 11:23 PM   #3
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QuoteOriginally posted by HermanLee Quote
Hi,

I was looking at this Tamron 70-300mm Di LD and found out that there is also LD version.
(Sorry if this has been discussed many times. I just got confused.)
Meanwhile, when I look at ebay, it seems that there are 2 different models of LD.
I believe LD is the older version but are there 2 models of LD version?

Thanks for your help.
I know there are 2 versions, but couldn't tell you the difference. I posted here and there have been many replies. If you are contemplating buying this lens, you could pay $129 for it new at buydig.com and end your confusion. The site link: https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/24756-tamron-70-300mm.html

buydig: Tamron 70-300mm 1:2 F/4-5.6 DI LD Macro FS=62 For Pentax AF | BuyDig.com, The Internet's Digital Superstore
04-11-2008, 09:11 AM   #4
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Original Poster
Sorry for the confusion.
Actually someone offer me to buy the LD (not the Di LD) version.
But I found out, from the pictures that I saw from internet, that there seems different kind of this LD version.
So my question is whether it's true or not?
And how can we tell which one is Di LD (new) or LD model 1 (old) or LD model 2 (older) from picture?

Thanks,

04-11-2008, 09:45 AM   #5
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As I said: The Di LD is 70-300 and the LD is 75-300mm. I don't know if there are two LD versions and how to tell which one is which.
04-11-2008, 09:56 AM   #6
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QuoteOriginally posted by pentagor Quote
I think there are two types of Di Tamron lenses avaliabe:
1. Di LD
2. Di II LD (smaller image circle for crop sensors)

I don't know if there are actually two different models of 70-300 on the market or there are just mistakes in product descriptions of the sellers. I think there is only a Di LD type of 70-300 model.
You can check all lenses HERE
There is however a 75-300 model, which is called AF75-300mm F/4-5.6 LD Macro, but this is an older model, designed only for 35mm film cameras.
The Di version does not have a smaller image circle. It simply has optimised coatings. The two versions are actually :

LD
Di LD
04-11-2008, 10:04 AM   #7
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QuoteOriginally posted by JMS Quote
The Di version does not have a smaller image circle. It simply has optimised coatings. The two versions are actually :

LD
Di LD
Sorry, but according to THIS, you are little mistaken.

There are three versions:

LD
Di LD
Di-II LD

All of them are LD, which means Low Dispersion.
The first (LD only) are lenses designed for FF cameras-
Di means Digitally integrated design and are also lenses for FF, but new, digital genration
Di-II are lenses for digital cameras only with crop size sensor.

The tele-photo zoom 70-300mm is available only as Di LD. The older one is 75-300mm and is available only as LD.
There is no such model from Di-II LD series....

So yes, Di LD does not have the smaller image circle , but the Di-II LD does!
04-11-2008, 10:33 AM   #8
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QuoteOriginally posted by pentagor Quote
Sorry, but according to THIS, you are little mistaken.

There are three versions:

LD
Di LD
Di-II LD

All of them are LD, which means Low Dispersion.
The first (LD only) are lenses designed for FF cameras-
Di means Digitally integrated design and are also lenses for FF, but new, digital genration
Di-II are lenses for digital cameras only with crop size sensor.

The tele-photo zoom 70-300mm is available only as Di LD. The older one is 75-300mm and is available only as LD.
There is no such model from Di-II LD series....

So yes, Di LD does not have the smaller image circle , but the Di-II LD does!
Correct. Tamron basically makes three families of lenses:
* LD = Full-frame
* Di LD = Full-frame but optimized coatings and optical formula for digital
* Di II LD = APS-C only

The 70-300 only comes in a Di LD version. It's $130 new from Buydig, I have it, and it's great.

The 75-300 only comes in an LD version. It is negligibly cheaper, maybe $10-20.

Save yourself the hassle, and get the 70-300 Di LD.

04-11-2008, 11:13 AM   #9
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There is only one new Tamron "70-300" and that is the Di LD version. It works on both FF and reduced sensor design.

Ben
04-12-2008, 02:14 AM   #10
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Hi guys,

Thanks for the helps.
I looked at Tamron web but couldn't find DiII for 70-300mm only the Di.
I think that's what Ben just got recently.

Will the picture be much different compared to the new Di LD?

Actually I don't mean to focus on Di or DiII instead the LD version since I saw 2 different pictures of LD on internet. That's what confused me.

The seller mentioned it's an LD but the price is pretty good so I decided to just buy it. (another reason is because the seller will include the very very hard to find Tamron 1.4xTC that from info in this forum will work w/ Pentax new SDM lenses - cross my finger)
I'll post the photo of the lens later when I receive it.

Thanks again guys,
04-12-2008, 07:12 AM   #11
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There is no Di-II version of the Tamron 70(5)-300mm.
Theres the Di LD version, Then there are two LD version. A 1:2 macro version and a 1:3.9 macro (75-300mm) version. The only "real" difference is that the 1:2 version focusses closer with the moving of a switch and is 5mm wider.


Thanks
PS.Hyperlinks present
04-12-2008, 09:42 AM   #12
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That's the answer

QuoteOriginally posted by Mikhail Quote
There is no Di-II version of the Tamron 70(5)-300mm.
Theres the Di LD version, Then there are two LD version. A 1:2 macro version and a 1:3.9 macro (75-300mm) version. The only "real" difference is that the 1:2 version focusses closer with the moving of a switch and is 5mm wider.


Thanks
PS.Hyperlinks present
Thanks Mikhail,
That's the answer I was looking for. Now I know why there are 2 different old LD versions.
I guess the poster mistakenly posted as 70:300mm instead of 75-300mm for the 1:3.9 macro version.
04-12-2008, 09:48 AM   #13
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QuoteOriginally posted by HermanLee Quote
Thanks Mikhail,
That's the answer I was looking for. Now I know why there are 2 different old LD versions.
I guess the poster mistakenly posted as 70:300mm instead of 75-300mm for the 1:3.9 macro version.
Could be, Id try and get the Di LD version or atleast the 1:2 LD version. I have a friend who has the 1:4 LD version and its quite a bit worse than my 1:2 LD version.

Thanks
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