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05-30-2011, 05:10 AM   #1
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SMC-Pentax-FA-645-150-300mm-F5.6 for landscape work

How useful for shooting landscapes this lens would be?
SMC Pentax-FA 645 150-300mm F5.6 ED [IF] Reviews - Pentax Lens Reviews & Pentax Lens Database

I am think about purchasing. But it is rather expensive ~1800$ on ebay..
what do you think?

05-30-2011, 11:01 AM   #2
D W
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It is not in the same league as far as sharpness as the 300, 200, 150 by themselves. But you are getting a zoom and losing one stop at the max aperture end.
05-30-2011, 12:22 PM   #3
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Original Poster
QuoteOriginally posted by D W Quote
It is not in the same league as far as sharpness as the 300, 200, 150 by themselves. But you are getting a zoom and losing one stop at the max aperture end.
aha, i get it...

which one you advice?

SMC Pentax-A* 645 300mm F4 ED [IF] Reviews - Pentax Lens Reviews & Pentax Lens Database

SMC pentax-FA* 645 300mm F4 ED [IF] Reviews - Pentax Lens Reviews & Pentax Lens Database

SMC Pentax-FA 645 300mm F5.6 ED [IF] Reviews - Pentax Lens Reviews & Pentax Lens Database

Last edited by spacevoid8; 05-30-2011 at 12:24 PM. Reason: added link
05-30-2011, 07:33 PM   #4
D W
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No a bad one in this bunch. The FA f5.6 should be least costly.
I had a A f4 and now using FA f4 because I had a chance to pick it up really cheap.
I did not buy it just for AF because at 400mm I use an adapted P67 400/4 EDIF which is manual focus.

05-30-2011, 09:34 PM   #5
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QuoteOriginally posted by D W Quote
No a bad one in this bunch. The FA f5.6 should be least costly.
I had a A f4 and now using FA f4 because I had a chance to pick it up really cheap.
I did not buy it just for AF because at 400mm I use an adapted P67 400/4 EDIF which is manual focus.
I don`t need wide aperture, because i plan to use this lens in combination with tripod - f5.6 would be enough, and how about the resolution?
05-31-2011, 04:02 AM   #6
rlj
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The resolution of the 300/5.6 is excellent wide open, improving with little change from f8-11. The 150-300 was not as good as the 300/5.6 and definitely not as sharp as my 150/2.8. I kept the 300/5.6 but not the 150-300 zoom.

As for the 300/4 vs 300/5.6, the 300/4 is sharper at 5.6 than the 300/5.6. However, there is little difference by f8-11. The reason I passed on the f4 model is weight. The 300/5.6 is around 700 gm, the f4 twice that. When I travel, other than by car, that weight difference is equivalent to another lens, like the 120 macro or the FA 35.
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