one possibility is you when shoot these, lights also enter thru the viewfinder and fool the camera meter.
lens hood or lcd hood?But if i'm using hood, will this happen as well?
Hi guys, i really appreciate your help..
catchlights said:btw, are you shooting this with live view mode?
catchlights said:lens hood or lcd hood?
when camera is on fully auto mode, AV, TV or P mode, camera will make exposure according to the camera meter suggestion.
if you didn't look thru the viewfinder, or the viewfinder didn't cover upped, during making the exposure, light will enter thru viewfinder and affect the meter reading.
another possibility is sticky aperture blades or faulty aperture level, but consider the camera is rather recent, unlike to happen unless the camera is poorly maintain.
As mentioned by catchlights: in any of the half-automatic modes the camera will adjust the other settings to get correct exposure. in Av mode, you define Aperture and ISO (best to fix it, don't let it in Auto ISO), the camera will adjust the shutter speed. Doesn't matter where you are (under shade, umbrella..), as long as no additional light enters the viewfinder. But that's rather a topic for night.Not the first few picutres, these pictures came out underexposed halfway during phototaking. After that, most of the picture came out underexposed. below is another sample of underexpose and correct expose picture. Not sure if i'm taking the photos under the shade hence causing the picture to underexposed?
Use your Canon kit lens, set to 30mm, similar aperture, take the same image. Compare and let us now the result.Not sure if this is related to the sigma 30mm f1.4 lens I bought recently?
I meant Lens hood.. (Sorry, i misunderstood your sentence, hence replying that i'm using lens hood)
I'm using viewfinder to take photos, don't think stray lights will enter from there..
Not sure if this is related to the sigma 30mm f1.4 lens I bought recently?
I'm confuse.. Will do more field test and monitor if this happen again.. Really thanks alot for your help..
daredevil123 said:Did you buy the sigma 30/1.4 second hand?
I know that older batches of sigma lenses will underexpose in evaluative (matrix) metering mode with new camera bodies. Usually these lenses need to be re-chipped to make them meter ok with the new camera bodies.
foxtwo said:Is your AEL on? Did you focus on a bright/correctly exposed area then change to a darker one?
Ya.. I do that too.. I focus on subject and re-compose the picture.. I tried focus on dark area and change to brighter side.. and vice versa