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01-09-2010, 02:06 PM   #1
Igilligan
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Kx + 55-300 + tam 1.4x tc

TEST SHOTS - not for critical consumption

I am loving this combo... It is dead winter here (greys and browns) and it has been overcast since I got this camera, but did some quick test shots today to see how the 55-300 played with my tamron 1.4X

I promise to get some real subjects later but I was excited at how well the Lens and Tc did together.

For anyone considering the $644 kx 18-55 & 55-300 kit... Hear me now, "BOX O' FUN"

ISO 200 - effective focal length 300mm + tc 120mm = 420 + 1.5x crop factor 630mm


ISO 800 - effective focal length 150mm + tc 60mm = 210 + 1.5x crop factor = 315mm


ISO 800 - effective focal length 55mm + tc 22mm = 77mm


ISO 3200 - effective focal length 55mm + tc 22mm = 77mm + 1.5 crop factor = 115mm


So I am loving the lens + tc combo.... But I am loving the camera even more... ISO 3200 jpg.... NUFF said


Last edited by Igilligan; 01-09-2010 at 04:55 PM.
01-09-2010, 02:29 PM   #2
Ash
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Excellent brilliant results Gus.
The combination on the K20D is a real slouch, but I can imagine the K-x speeding things up considerably and making it a joy to use.
Well done with these and thanks for sharing them.
01-09-2010, 02:34 PM   #3
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I hadn't bothered trying my Kx, 55-300 and tamron 1.4x, but after seeing this post I went outside and gave it a try.

My mother's rental car licence plate, at 300mm + 1.4x (iso 3200).

Last edited by dgaies; 01-09-2010 at 03:14 PM.
01-09-2010, 03:02 PM   #4
Igilligan
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Wow... (the wow is for Damn Brit)

If I inspired even one other Tamron 1.4x owner to throw it on the Kx 55-300, then my work here is done

Pretty awesome right?

I am having a lot of fun with this silly little entry level camera. If my K20 ever does make it back from the repair shop, it is gonna have a tough time getting any 'face time'.


Thanks Ash for the comment... it is appreciated.

01-09-2010, 03:19 PM   #5
Igilligan
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I kept blathering on about effective focal length...

But I did not add the 1.5 crop factor of the sensor...

So the 300x1.4 = 420 x 1.5 = 630mm Is that right? Math is hard!

Last edited by Igilligan; 01-09-2010 at 03:34 PM.
01-09-2010, 03:21 PM   #6
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QuoteOriginally posted by Igilligan Quote
So the 300+1.4 = 420 + 1.5 = 630mm Is that right?


Creative use of notation...
01-09-2010, 04:02 PM   #7
Igilligan
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Tank you... I gadiated 2nd grade
01-09-2010, 04:41 PM   #8
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Seems to be the day to play with 1.4X TC's.

I'd sure like to do a beak-to-beak with a DA 55-300 and my SP 180/2.5 and 300/2.8 Adaptalls but I'm afraid I'd get too used to that auto focus thingy and not carrying around 8-10 pounds of glass.

H2

01-09-2010, 04:48 PM   #9
Igilligan
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You can send those two old adaptalls to me... They are way to heavy for you to be messing with!

Actually the Tammy TC does not AF with the mf lenses... only that Pentax 1.7 does that to my knowledge.

But I would still love to beak to beak test for you!!! Let me know 8^)
01-09-2010, 04:50 PM   #10
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I'm blown away. I've insisted that lens would not do well with a TC. I'm eating crow--but it's very tasty.
01-09-2010, 05:21 PM   #11
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Beak-to-beak

QuoteOriginally posted by Igilligan Quote
But I would still love to beak to beak test for you!!!
Naw, that'd be inefficient, Gus. Shipping all that weight would cost a fortune. Why don't you just send me that light DA for a few weeks come spring?

Heck, I'd even post comparison pix for that!

H2
01-10-2010, 11:47 AM   #12
Igilligan
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Dont worry about the weight!

I will pay for shipping.... Just pack with love!
01-10-2010, 01:03 PM   #13
Ash
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QuoteOriginally posted by Igilligan Quote
But I did not add the 1.5 crop factor of the sensor...

So the 300x1.4 = 420 x 1.5 = 630mm Is that right? Math is hard!
That's effective focal length according to the camera's crop factor.
The reach is still 420mm. But your calculations are correct.
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