So much different

[ccplim]

These two pictures were taken at about the same location with the fish at almost the same position. The lighting used and readings on my camera were the same for both. However, I am surprised that they turned out to be so much different (wonder what could have causes that??). [smilie=fear2.gif]

PS: This is the original as what I have. No color correction or anything have been done.

The setup/settings used were :-
1x 36w pinkish FL tube
1x 18w pinkish FL tube
1x 18w marine white FL tube
1x off camera flash from top of tank
ISO : 250
Speed : 1/60
Aperture : 3.5
Metering mode : spot
WB : Flash

http://photos.imageevent.com/ccplim/privite/picinquestion/websize/CP-FF-001.jpg

http://photos.imageevent.com/ccplim/privite/picinquestion/websize/CP-ST-001.jpg

By the way, the 2nd pic appear just nice on my screen. Wonder does it appear to dark to you guys again? (I always have this problem in here)

[CDM]

Think that's the short DOF from the F3.5 together with the macro (I suppose you use macro range). Infact, the rear pectoral fin of the tiger is out of focus already. Guess both are not different. Sad to say that, the lens of digital camera (even the DSLR) are smaller as compared with normal SLR.

[ccplim]

Think that's the short DOF from the F3.5 together with the macro (I suppose you use macro range). Infact, the rear pectoral fin of the tiger is out of focus already. Guess both are not different. Sad to say that, the lens of digital camera (even the DSLR) are smaller as compared with normal SLR.

I am indeed using macro range. In actual fact, the lens that I am using is a macro lens. My original intention was to take the pic using f11. However, due to the low light condition and diffculty in focusing, I switched everything to auto and give it a shot instead.

As far as what I know, there is a 1.5x magnification in focal length for DSLR. As for how much it will affect the aperature settings, I have no idea about that too. [smilie=oops2.gif]

[CDM]

If you really want to know the exact DOF, we used to put a ruler in front of the camera with 45 degree slanted on the same level with the camera and take shots with different settings (especially the aperture size). You can tell what's the range of the DOF of a specific setting (remember to divide the lenght by sqrt of 2).

[ccplim]

If you really want to know the exact DOF, we used to put a ruler in front of the camera with 45 degree slanted on the same level with the camera and take shots with different settings (especially the aperture size). You can tell what's the range of the DOF of a specific setting (remember to divide the lenght by sqrt of 2).

Oh.... this is new to me. Will give it a try someday. Have been pretty busy lately.