Spot metering for 10D (HACKED firmware) ??

[Zangarh]

Could that be done?

I would love to be able to use spot metering with my 10D!

Z

[petiot]

Brillant idea. We have to hire the services of the guy who hacked the 300D ! :). i d love to have spot metering too. Still dont understand why canon dont implemnt this bydefault :(

[Jesper]

I doubt that this can be done with a firmware upgrade. Probably a hardware spot meter would be necessary too if you'd want this on a 10D.

[CyberDyneSystems]

Jesper is probably right,.. but on the other hand.. I was one of those that did not think that Mirror lockup would be possible with the 300D as the whole set up is rather different in the 300D from the 10D..

I just assumed that the hardware would not allow it...

So who knows.. perhaps all the 10D would need is something to tell is to use only a 2-3% portion of the center spot as opposed to the 9% that "partial" uses.. ??

Got to admit that a true spot meter was allways at the top of my 10D wish list!

[slejhamer]

Got to admit that a true spot meter was allways at the top of my 10D wish list!

I've seen similar comments expressed in the forum, and have often wondered how much more effective true spot metering capability would be compared to the 10D's 9% "partial" metering. In what situations would it really make a difference?

I ask the question as someone who has never used a true spot meter, but I do use the partial metering mode when it seems appropriate. TIA,

[msvadi]

I think that with wide angle lenses, the true spot meter can make a huge difference comparing to partial. It may be not important with telephoto.

[CyberDyneSystems]

Depends..

Here's are a few examples..

1. I want to get correct metering for a bald eagles head.. which happens to be several shades lighter than it's dark brown body.. partial may not cut it.. partial on the head will most likely get me a lot of the background as well (unless I'm really close).. so I am forced to meter from the body... thus leaving the white head overexposed...

2. Ballet dancer on stage... a group shot.. the lead dancer is wearing white.. all the rest darker clothing.. the only way I'd get a decent metering QUICKLY would be a spot meter off of the lead dancer's skin tones (face) ... which would be a reasonable balance between the bright white and the darker costumes.. at least guaranteeing the faces are exposed well..

[theoldmoose]

Jesper is probably right,.. but on the other hand.. I was one of those that did not think that Mirror lockup would be possible with the 300D as the whole set up is rather different in the 300D from the 10D..

I just assumed that the hardware would not allow it...



The 300D does a 'sensor clean' manuever, where the mirror is locked up until power down. Clearly the hardware is capable. It was just a matter of time until someone figured out how to get that motion to occur before a shutter opening. It's not as if there is a direct mechanical linkage that prevents shutter opening -- in sensor clean, the shutter is open also....