eos-m dumb adapter question

R

robfilms

Veteran
eos-m dumb adapter question-

i'm shooting with my eos-m and a pk/pentax dumb adapter mounted to a pentax 50mm/f2 lens. (no auto exposure/no autofocus/yes exposure)

i am in m/manual mode.

i am shooting at 1/50th. the f/stop is not registered (it's a dumb adapter!) but i'm open at f2.8

the lcd is VERY dark. i can barely see the object i'm shooting in the lcd.

i meter using the exposure compensation scale.

i shoot the shot and the exposure is perfect.

i take the same shot with the 18-55mm kits lens.

i am in p mode.

i meter using the exposure compensation scale.

i am at nearly the same exposure as my first shot.(f2.8 vs f3.5/iso 200 vs 100)

the lcd is a perfect rendering of the shot-nice and bright.

i shoot the shot and the exposure is perfect.

i put the eos-m in green A mode with the same kit lens.

the lcd is bright.

metering is automatic and is the same as the p mode.

i shoot the shot and the exposure is perfect.

three shots. very near same exposure on each.

but the one with the pk dumb adapter has a VERY dark lcd.

what gives?

i apologize in advance if this is a newbie-type question.

any and all thoughts are appreciated.

be well.

rob
smalltalk productions
nyc
 
Are you shooting video or stills? In video, you should not be experiencing this. In stills mode, however...

Without a smart adapter and a lens that will talk through it, the camera cannot accurately render a live exposure preview. This will happen on any EOS camera that I've experienced. Including the T2i that I've been using for years (vintage Yashica lenses on an adapter ring).
 
alex-

thank you for the quick reply.

(and i only thought you were an audio guru!)

i was shooting in still mode trying to learn the canon dslr menu systems and their capabilities.

i am relieved to read that in movie mode i should be able to "see" a bright lcd even when using a dumb adapter.

be well.

rob
smalltalk productions
nyc
 
Also, I believe you can disable the exposure simulating (that's what I believe is causing this in the first place) using Magic Lantern. Among other awesome reasons to have ML on any Canon camera.
 
ML is a must. And yes, it can solve this issue... in some cases (namely: if the lens and/or the adapter have a focus confirmation chip)
 
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