[Rollei] Do Rolleinars require exposure compensation?

["Dan Kalish" <kaliushkin >]

Platitude: the only stupid questions are the ones that aren't asked.
>
> Date: Mon, 25 Mar 2002 16:32:51 -0500
> From: "Fox, Robert" <RFox  >
> Subject: [Rollei] Do Rolleinars require exposure compensation?
> Message-ID: <119F4651B5B4D411B38E00508BB01D9A015402CB  >
> References:
>
> Hope this is not a really stupid question.  I tried out last night for the
> first time the rolleinar #2 set on my Rolleiflex T using Provia 400F,
taking
> test images of some fruit and kitchen items well lit under halogen lights.
> The scene was metered with my Luna Pro SBC.  However, the resulting slides
> look a good bit underexposed to me. Should I be exposing any extra time to
> account for the rolleinar, or did I just not expose enough to begin with?
> My rolleinar are mint condition and were thoroughly cleaned by me prior to
> using.
>
> Any help appreciated.
>

Using a supplementary lens to put you in the close-up/macro realm does not
innately affect exposure, unlike using extension tubes or bellows.  The
explanation is a little tricky; I haven't written it up yet, but you can
look at the discussion on this topic in the rec.photo.equipment.large-format
newsgroup.

At first glance, it would appear that the Rolleinar would increase, not
decrease, the exposure, because its effect is to reduce the effective focal
length.  However, it doesn't.

Of course, there may be other factors that would effect exposure, such as
dirty filters or lenses, etc.

Dan Kalish <kaliushkin  >
Flushing, NYC, USA
Hats off to Larry.

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