Sigma 135-400mm f4.5-5.6 APO DG Review

Just bought the Sigma 135-400mm f4.5-5.6 APO DG

Maker: Sigma
Focal length: 135-400mm
F stop: 4.5-5.6
F stop min: 22
Construction: 13 elements in 11 groups
Filter Size: 77mm
Weight: 1280g
Size(LxW): 189 x 84 mm


I have chosen this lens cause i need a telephoto to shoot far object..and i dont have a tele lens..

lens built: At 1.2 kg it does feel a bit like a mini dumb bell but with E-3 the weight distribution feel balanced.

sharpness: the lens is definitely an outdoor lens. I notice it can be used indoor too but flash is a must. I tested shooting indoor with fl-36 and E-3 and get good results as shown in the cactus pics below. However at wide open is not as sharp as f8so have to stop down a bit to get more sharpness.

Autofocus: Maybe it is because of the E-3. I dont have issue with autofocus. Even in low light i can focus considerably well but it the room is too dim u need the autofocus assist for the fl-36 or use the built in one.

Mounting: The tripod mount is a blessing. I manage to mount it steadily on my Manfrotto tripod firmly without any issue. I use the 190xpro + 804rc2

Well once i have shoot more pics i will come back with more finding..:) stay tune.












Test shot using sigma 135-400.. they are shot usign various focal length from 135mm, 200mm, 300mm and 400mm u go figure out which is which..











Ok the comparison shot below is taken at iso 100 f4.5 and f8 1/250sec
I notice at 135mm wide open is quite soft. need to step down to f8 to have a sharper pics..maybe due to dof..i dont know need to experiment more.

(pls double click on image for larger file)
f4.5 135mm 1/250sec


f8 135mm 1/250sec

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