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05-03-2015, 07:53 PM   #1
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Join Date: Nov 2009
Location: Brisbane, Australia
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Posts: 3,482
K-3, K-7 and 4 lenses to shoot dam spills

Herein I would like to share my (relatively) experience with K-3, K-7 and 4 lenses that I took during the week-end. I worked with 4 combos:
(1) K-3 + DA18-135mm WR
(2) K-3 + DA18-250mm
(3) K-3 + FA77mm
(4) K-7 + Carl Zeiss 28mm f2

Most shots were taken in P mode, although I used Tv mode to shoot with high-shutter speed (eg 1/8,0000 s). Physically I was constrained in terms of shooting location and time, as well as lighting. I did not shoot in ideal conditions and this was clear after PP the shots

On Friday, most SE Queensland (Australia) received in excess of 150mm of water in 24 h. For the next 72 h, the dam spillways operated at several places, and I went to photograph two dam spillways on Saturday morning and Sunday morning . At one site, I had to walk 18 km (return) through a forest park because the road was inundated. The last 300 m were through thick forest and bushes. I could come close the spillway and had a better shooting opportunity IMO. At the second site, I had little choice. Access was easy by car, but there were only two shooting locations, both of which were not ideal in terms of lighting at the time of shooting. I attach a photograph of each dam spillway.

While I did not use the 4 combos at the same time and place, the comparison of all the shots (in excess of 500 shots altogether) makes me fairly confident of what I like and what I do not like.

So what were the differences between all the combos? The big surprise was the combo (4): K7+CZ28mm. The K-7 with the CZ28mm outperformed the K-3 with DA18-135mm and DA18-250mm, even up to ISO1600. While most P mode shots were at ISO-200-800, most Tv shots at ISO800-3200. The K-7 did well with a good prime. Yes, "good glass is worth every penny". The Old K-7 did well with the prime and that why I keep it as my second body. I have also a K-01, but I prefer my K-7 as second body. For once, the K-7 has very close button arrangement with the K-3 (they share the same body). More I prefer the optical viewfinder over LiveView. And the K-7 is WR, a major asset when it is wet around.

Off course the combo (3) did well: the K-3 and FA77mm works nicely together . We all know it at PF!

Combos (1) and (2) provided comparable outcomes IMHO. The DA18-135mm has slightly better IQ than the DA18-250mm and it is WR (not really a major advantage over the solid DA18-250mm IMHO). But the Da18-135mm lacks the reach of the DA18-250mm. In my situation, both combos worked, although not was well as the other 2 combos.

In summary: with this limited experience, I was pleasantly surprised by the K-7 with CZ28mm. This is not the first time that use the K-7 with good primes (CZ28mm, FA31mm, VL58mm, FA77mm) and I always get decent results even in 2015!

I hope that the comments may interest others.

Attached Images
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PENTAX K-3  Photo 
View Picture EXIF
PENTAX K-7  Photo 

Last edited by hcc; 05-03-2015 at 08:09 PM. Reason: minor edits
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