Weird TTL Problem with F56AM...

[ace_mav]

If I were to use the tele end of my kit lens which is 70mm..the picture is underexposed.. the distance would be around 4 metres...

however, if the distance was shorten to the subject is 3 metres at 70mm...it became well exposed...

using manual mode at 1/4 level or using the built-in diffuser solve the problem though...but why normal bounce without diffuser, the pic became underexposed..ttl inaccuracy?

[eow]

Originally Posted by ace_mav If I were to use the tele end of my kit lens which is 70mm..the picture is underexposed.. the distance would be around 4 metres... however, if the distance was shorten to the subject is 3 metres at 70mm...it became well exposed... using manual mode at 1/4 level or using the built-in diffuser solve the problem though...but why normal bounce without diffuser, the pic became underexposed..ttl inaccuracy?

u shoot in aperture mode?
from what i had knw..if u zoom out....the shutter will increase in correspond to the zoom range...u need to compensate accordlingly

[ace_mav]

i shoot in manual mode...

shutter speed 1/30, aperture f5.6...FEC +1 also seems underexposed..

only solution is putting the WA diffuser or using manual flash mode...surprisingly work...*roll eyes*..

still...a bit strange..like a bug...

[eow]

Under normal circumstances the km/sony flash seem to veer a bit on the safe side, tend to under a bit
...from my observant the wide angle disffuser is to be use only in direct mode once u bounce it with the diffuser on , it actually tend blown the highlight ...indirectly it also gave u a feeling of exposed more evenly?....


oth..to tell u the truth........for better consistency, i also shoot in manual nowaday

[ace_mav]

i don't think it is abit...its very underexposed..will post an image when my batteries are charged...

2ndly, the WA diffuser does not overblown the image..just that it requires quite a heavy flash output...

3rdly, for manual mode, i can't keep changing power level for diff situation..need to be fast and versatile..

[DewaKarma]

wah..someones chatting here..hehe..gd gd...hope u dun sell ur cam...let eow tell u how he jumped from KM to canon and now..back to KM/SONY...heheheh..if he jumps again..i'll be glad to take over some of his lenses...hehe

[ace_mav]

you psycho him to jump back to KM issit?

so why did Eow jump back to KM? any particular reasons?

[DewaKarma]

Originally Posted by ace_mav you psycho him to jump back to KM issit? so why did Eow jump back to KM? any particular reasons?

let him ans this himself...the the GURU of landscapes and valley ans u...hehehe

[eow]

Originally Posted by ace_mav you psycho him to jump back to KM issit? so why did Eow jump back to KM? any particular reasons?

always under the assumption that they are faster and more accurate
only the former is true the latter would depend on the type of lens.
telephoto lens + usm is a deadly combination... however if u shoot wide... depending on the backgrd . the accuracy leave much to be desire seem to the same problem across all platforms

[eow]

Originally Posted by DewaKarma let him ans this himself...the the GURU of landscapes and valley ans u...hehehe

should read as newbie in landscape and still life....
mai suan me...

[eow]

Originally Posted by ace_mav you psycho him to jump back to KM issit? so why did Eow jump back to KM? any particular reasons?

was abt to pm u abt the sale of yr flash in bns thread....too bad u pulled back he he

as rebrowsing old thread on minolta flash system...think this would be of useful to u
http://forums.clubsnap.org/showthrea...ighlight=flash

[ming9866]

i have this problem too , and its not settled ... still investigating ...

[Zenten]

My experience with KM flash system is that it is pretty consistent .......... but still lagging a little behind the Darkside.