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05-26-2010, 02:55 PM   #1
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Pentax FA*80-200mm TC test shots (Tamron, Kenko, Promaster TC's)

These kinds of comparisons wouldn't help a lot but for those who own the lens, it's very hard to find. So, I thought I'll put it here so it will be in the archives.

First The Whole target image



Then the same area of the image was cropped for lens and all TC's

Lens at f2.8


Lens at f4



Lens alone at F4 resized for long edge to be 1300 to compare to 1.4/1.5 TC's


Lens alone at F4 resized to for long edge to be 1430 to compare with the 1.7 TC


Tamron 1.4 TC at f2.8


Tamron 1.4 TC at f4


Kenko 1.5 TC f2.8


Kenko 1.5 TC f4


Promaster 1.7 TC f2.8


Promaster 1.7 TC f4


Now for the kicks, the same image taken from the same spot with the Sigma 100-300 F4
Sigma 100-300 F4


Conclusion: Using the Tamron 1.4 TC is better than cropping, the same results I found for the sigma 100-300.

05-26-2010, 03:04 PM   #2
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Nice work, thanks for this. That Tamron TC just went up in price again.
05-26-2010, 03:18 PM   #3
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I think the lens alone at F4 is kind of soft. So, I will do another target and get back.

100% crops are so sensitive, it is tough to make hard conclusions.

ROUND 2 (I think it's close here). So, I think it is a close call between cropping and TC, but I see nothing wrong in using the Tamron TC with this lens.

Lens alone at F4 and then resized to the same long edge as with the TC



Tamron 1.4 TC


Last edited by pcarfan; 05-26-2010 at 03:34 PM.
05-26-2010, 06:09 PM   #4
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So now that you're done testing, I think the only thing left to do is put the lens on the marketplace. Consider this the first preemptive pm for it

05-26-2010, 06:35 PM   #5
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I agree with your conclusion. 1.4x converters are typically safe to use, as long as the brand (quality) is decent.

Adam
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05-27-2010, 05:06 AM   #6
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QuoteOriginally posted by Ari Quote
So now that you're done testing, I think the only thing left to do is put the lens on the marketplace. Consider this the first preemptive pm for it

Nice try!

I am going to do some real life testing (zoo) today. I know it's rendering is magical, hopefully I can exploit it today.

I was lucky to get a very good copy. Caught it at the right time when my better-half was in a good mood. I had just recently printed some of her birthday pictures with her sister and dad, and when I mentioned this lens, she said if you can take pictures like that you should by this lens. Christmas came early for me

I don't think Pentax will make this lens again or the FA* 28-70mm. Why? 'cause they are too damn heavy for them to even consider making them today. After carrying the FA*80-200 the sigma 100-300 fells like a feather weight. I don't think I will ever sell it. Even if I don't use it much, I would need this and a good tripod when only the best of the best would do.....The prices will only go up with these.....

QuoteOriginally posted by Adam Quote
I agree with your conclusion. 1.4x converters are typically safe to use, as long as the brand (quality) is decent.
Yeah the 1.4 TC's are generally very safe, but there are differences among them that is not always explained by the price difference. But, I wish some TC company (like Kenko) will make their pro grade TC's for Pentax as well.
05-27-2010, 12:11 PM   #7
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You are on a roll, pcarfan
05-27-2010, 04:01 PM   #8
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QuoteOriginally posted by Bart Quote
You are on a roll, pcarfan
I think I am done.

Posted three real images here

https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/77477-f*-fa*-club-5.html

05-28-2010, 12:00 PM   #9
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The first one really stands out for me.

The lens is indeed heavy: 1510g.
A modern equivalent - Nikon 70-200 VRII - weighs in at 1470g. A bit longer, their version of SDM, in-lens-stabilization and still a fraction lighter.

And "done"?
I think Adam might have some suggestions for some more FA* lenses
05-28-2010, 03:43 PM   #10
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QuoteOriginally posted by Bart Quote
The first one really stands out for me.

The lens is indeed heavy: 1510g.
A modern equivalent - Nikon 70-200 VRII - weighs in at 1470g. A bit longer, their version of SDM, in-lens-stabilization and still a fraction lighter.

And "done"?
I think Adam might have some suggestions for some more FA* lenses
I am sure Adam has suggestions for all sorts of FA* lenses. I've already tried the FA*24/2, and the others are way too expensive.

I really, really love the FA*28-70, and even though the Tamron is great, I will be selling the Tamron shortly as the FA* 28-70 is truly special.

The FA*80-200 is also nice, but I just don't think I will use it much, and I have a feeling I'll be better off with a 200mm prime for those rare occasion where I may need an f2.8 lens longer than my 135. So, one day I might sell the FA*80-200. but I am going to take it to my Yellowstone trip and see whether I can use this lens to show animals in their environment and later decide. Most likely will just keep it in case Pentax released a FF within the next year.
06-07-2010, 08:36 PM   #11
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QuoteOriginally posted by pcarfan Quote
I am sure Adam has suggestions for all sorts of FA* lenses. I've already tried the FA*24/2, and the others are way too expensive.

I really, really love the FA*28-70, and even though the Tamron is great, I will be selling the Tamron shortly as the FA* 28-70 is truly special.

The FA*80-200 is also nice, but I just don't think I will use it much, and I have a feeling I'll be better off with a 200mm prime for those rare occasion where I may need an f2.8 lens longer than my 135. So, one day I might sell the FA*80-200. but I am going to take it to my Yellowstone trip and see whether I can use this lens to show animals in their environment and later decide. Most likely will just keep it in case Pentax released a FF within the next year.
If you ever decide to sell, please pm me (please please please )
06-08-2010, 05:27 AM   #12
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Ari,

After using it for a short stint I felt like I could better use a 300/2.8 and briefly lost my sanity and put it up in the marketplace, luckily I came to my senses soon enough to pull it back. I was shooting some indoor portraits with it from across the room. Not only can I count each eyebrow but even the tiniest blood vessels in the eyes. Unfreaking beleivable.

I am going to enjoy this lens for bit longer and then let you know.

Thanks.
06-08-2010, 07:42 AM   #13
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Thanks pcar. Enjoy the lens. You've got one of the best pieces of glass ever made
06-08-2010, 12:52 PM   #14
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I hope so

Last night I took shots of things just laying around the house at MFD and 200mm, and when zoomed in it shows more detail like a macro lens and shows much more detail than what the naked eye can see, like patterns on papers. I showed my wife a brown colored paper and then asked her whether she could see any patterns on the paper, and obviosuly she couldn't, then I took a picture of the page and zoomed in and showed it to her, it was full of little squared patterns. She said this lens has better than 20/20 vision

Last edited by pcarfan; 06-08-2010 at 01:14 PM.
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