Category Archives: Personal Vision

Thoughts on the Reveni Light Meter

The Reveni Labs hot shoe Light Meter is the smallest one we’ve found.  But adding ‘mini’ to the name was entirely my idea.  It was a Kickstarter that my husband joined a few months ago, and I have to say one that I’ve been most pleased with.

The Reveni Light Meter has an excellent downloadable .PDF manual that starts with the basics of metering and proceeds through to the specifics of this light meter’s operation.  Each orders includes a certificate as shown above.  I’ll spare you the full description, because the manual can be examined before you make a purchase.  A summary of the key feature are below:

The Reveni Light Meter has an excellent downloadable .PDF manual that starts with the basics of metering and proceeds through to the specifics of this light meter’s operation.  Each orders includes a certificate as shown above.  I’ll spare you the full description, because the manual can be examined before you make a purchase.  A summary of the key feature are below:

The Reveni Meter has an ambient reflective meter with a 45 degree cone sensor field.   It has a bright OLED display with simple menu and controls (shown below).  It has aperture or shutter speed priority settings.  Exposure compensation can be set in steps of 1/3 stops in a range of -2 to +2.

Example display of f/16 and an exposure of 4 seconds, representing measurement of the red background material.

The Reveni uses a LR44 battery.  It weighs 9 grams including the battery.  The first battery is provided (at least for the Kickstarter version). The dimensions: 0.92 in (22.5 mm) x 0.86 in (21.8 mm) x 0.71 in (17.8 mm).  Now with the basics in hand, let’s get to the testing.

Light Meter Testing

To test the Reveni Meter I first compared it to my recently refurbished Minolta SRT-101, which included a light meter recalibration.  I mounted my f/1.7, 50 mm normal lens for the test.  I was exposing Kodak T-MAX 400 @ ISO 200 (E.I. 200).  Sometimes I held the f/-stop constant and changed the shutter speed and sometimes I held the shutter sped constant and changed the f/-stop.  In both cases my results were consistent.  The Minolta Meter was 1/2 to a full stop over exposed compared to the Reveni Meter results in medium to dimmer light.  The exposure difference could be as much as 2 f/-stops in bright light or with a lot of glare, as with the first example below. The Reveni doesn’t handle glare as well as the in-camera meter

Both meters agree for the wide open landscapes……..as above.

I also happened to have my X-700 loaded with Ilford HP5 @ ISO 400 (E.I. 400) with a roll of film that I wanted to finish.  I had been using this camera to photograph my Birthday Bouquet.  So I snapped on the Reveni Meter and did a few comparison images.  Here is one example below.  The X-700 meter showed a full 2-stop difference.

Final Thoughts

In general, I trust my 35 mm in-camera light meters, especially my refurbished SRT-101 and SRT-202, which were both re-calibrated.  And the in-camera meters seemed to handle bright light and glare better.  That said, I find no faults with the Reveni Meter and can think of two special cases where I will definitely use it.  I have two wonderful cameras that are fully manual with no light meters:  my Mamiya 1000s (645 format) and my FujiFilm GW690-III (6X9 mm format).  Usually I ‘guess-timate’ an exposure using the sunny-16 reference.  But, I’m not alway photographing in bright sunlight, and multiple bracketing exposures are not practical for the GW690-III which only has 8-shots per roll.  The Reveni Meter also offer a number of meter carrying options for cameras like the 1000s, that do not have a hot shoe.    So they have it all covered.  Be on the lookout for future works featuring these cameras and the Reveni Light Meter.

Technical Summary:

Speed: 1hr – 1/8000th sec in 1 stop increments

Aperture Range: F0.7 – f1024 in 1 stop increments

Film ISO Range: ISO 1 – ISO 12800, see “Setting Film ISO” for full list

Speed: 1hr – 1/8000th sec in 1 stop increments

Aperture Range: F0.7 – f1024 in 1 stop increments

Film ISO Range: ISO 1 – ISO 12800, see “Setting Film ISO” for full list

EV Shutter Range: EV 2 – EV 19.5 in 0.1EV increments (@ISO 100)

EV Shutter Range: EV 2 – EV 19.5 in 0.1EV increments (@ISO 100)

Note: Hamish Gill has published a detail and technically oriented review of the REVENI which can be found HERE. Turns out he;s friends withe developer and saw earlier models. Oh well, I had a;ready written this and decided to share it with my followers.

Through the Glass: Prisms

Three weeks post surgery and now with the corrective prism in my left lens:

Still trying to get used to seeng quasi-stereo vision. I was told that it might take until December to finally resolve my vision problems.

I think either way I’m going to have a permanent disability to deal with.

Hello from Apex…..

Just a few Door:s from a local Ghost town……

Apex_Town1

I’ve posted these on my Other Blog, but I know that most of you look here for Thursday Doors……

Apex_Town2

At the Old Mine Entrance there has to be a door in there somewhere:

 

Also, I usually don’t post digital images on the Blog……

Apex_Town_Sign

I’ll be looking through mu Ghost Towns to find more door………

Retrospective: Loveland Pass

Here is the second look back at my last roll of Kodak E100GX. This time from Loveland Pass.

Looking Towards the North…..
Looking South towards Arapahoe Basin just around the corner to the right.

Retrospective: Longs Peak

Over the next few Retrospective postings I’ll be sharing my last few roll of Kodak E100GX from 2011. I start here with a view of Longs Peak from Rocky Mountain National Park:

Have a Relaxing Labor Day

Birthday Flowers from May

OK, so my Birthday was in May.  Those of us that use film know that rolls sometimes aren’t finished in a timely fashion.  But these were beautiful, sent to me by my eldest brother and his wife………….Back in May.  It was my 60th Birthday, so I wanted to highlight them:

 

From my X-700, HP5 Film and 50 mm Minolta MD f/3.5 Macros Lens.

Through the Glass: Eye Surgery and More………

I’ve been living like this for more than a year. I was told that 3rd Cranial Nerve damage was always allowed a year to see how much it might recover. Monday (August 24th) was my surgery day………….

The next two images show how much progress I had made. Here my eye closed without the glasses. Imagine wondering around for a year with your eye closed….no depth perception, for example:

Waiting the year (and having the Botox treatment) did make my left eye and eyelid a bit stronger. Before the surgery I could keep my eye open, but didn’t because the eyes were not aligned………

Since the eyes were not aligned it caused double vision. Below, my immediate post op photo:

The wound continued to drain overnight, ;eaving my eyelids stuck together by morning. I had to use several hot, wet face cloths to soak my eye (instructions say NO RUBBING), Finally the eye was open:

I will still need still need special glasses to restore near normal vision, but for now I have a ‘sweet spot’ in my current glasses that allow me to see stereo vision. Each day my vision and the coordination between my eyes is better,

Now moving on to the MORE…….That more being further complications from the original tumor. Or rather, complications from the Radiation Treatments. I had very high levels of radiation with the Proton Beam, resulting in Necrosis defined as:

The brain tissue necrosis is a delayed effect of radiation therapy and can occur several years after the radiation treatment, but it usually occurs within the first 1 to 2 years.[1]Jul 8, 2020

This Necrosis results in cysts growing in the Cranial Space and surrounding tissue. They started growing sometime after my 6 month check up, appearing in my May exam. The follow-up is every 8 weeks. I have that 8 week check in last week. Some cysts are smaller, some unchanged, and a few new ones have appear (but they are very small). So another MRI at the end of October and we’ll see where we are……