Showing posts with label Film photography. Show all posts
Showing posts with label Film photography. Show all posts

Friday, 23 August 2019

Olympus 35RC review

This was my first "real" camera. My dad helped me select it, replacing my Kodak Instamatic. I knew very little about cameras at that time. Not sure really how he got to recommend this one, maybe talking to the camera store or to his photography friend, a German man in our village.

Pimped Olympus 35RC

First of all my appreciation of it has actually grown over time. When I first got it, it was just a camera to me, nothing more nothing less as I had very few perceptions of what it could do or what I wanted.
I dabbled with with black and white in our ad hoc darkroom that we setup in our sauna from time to time.

Today I think the camera is over rated and under rated. Let me explain why.

Over rated

It is often raved about as having a very sharp contrasty lens. I don't think this is the case, the lens is sort of sharpish but not very sharp. Let me put it in my order of 35mm rangefinders that I have owned or been able to test.
Sharpness in falling order
1) Voightländer Vitessa with Ultron 50/2.0
2) Yashica Lynx, Yashinon 45/1.4
3) Fujica Compact deluxe, Fujinon 45/1.8
4) Olympus 35 RC, Zuiko 42/2.8
5) Yashica GSN, Yashinon 45/1.7
6) Ricoh 500 38/2.8

With 1,2,4,5 I and my friend Zheng Li did a target test on tripod 10 years back so I know the order between them. The others are more of my feeling on where they belong based on results.
Given some of the very upbeat web reviews about the lens I was for a while wondering if my sample was a lemon but having browsed 100s of Olympus 35RC photos on Flickr , I have come to the conclusion that it is not. Do not despair though, while not the sharpest of the sharpest it is good enough to enjoy and better than many other same era rangefinder lenses.

The lens itself is 42mm f2.8 using 5 elements in 4 groups. So somewhere between a normal 50mm and 35mm. I do prefer this slightly wider focal width vs 50mm

Under rated

So to the under rated part. Two things stands out as I see it, the size of the camera and the ease of operation.
While it is not the smallest camera on the market it is still pocketable in a overcoat which is a big plus, avoiding to drag a camera bag around

The camera can operate with or without battery. Without battery you must manually set shutter and aperture. A feature while may seem simple should not be under estimated. I have several times found myself with fully automatic cameras having the battery fail on me, not fun at all.

Operations & metering

When operated with a battery the camera can be set in shutter priority mode.

Shutter speed selector
While I would have preferred aperture priority the operation in reality is not that different. Try out what you think is the correct shutter speed for the light and film speed and half press the shutter. The in viewfinder dial will show the selected aperture. If you are happy press the trigger if not turn the shutter speed wheel on top of the camera to the wanted speed. You can see the speed and aperture in the viewfinder so there is no need to take the camera from your eye just turn the shutter dial or the aperture dial when you want to go manual.
Viewfinder with shutter speed at the top and aperture at the bottom

There are two quirks with the Olympus 35RC shutter priority program that you may want to watch out for.
a) You cant press the trigger very fast. Slow/Moderate speed is the way to go. If pressed too fast the program will not select the correct aperture. The system is partly mechanic and need it's time to move the parts.
b) If you are at the edge of the aperture range you may want to switch to manual. Even if say 1/60s shows f5.6 and you then decide to move the dial to 1/250s in order to go to f2.8 the camera may refuse to release the shutter. The reason is that the aperture is not only in full stops in automatic mode. So the camera block you as you may actually need f2.5 which you don't have. The solution is simple when heading for f2.8 then switch to manual mode. The above case would be turn the dial to 1/250s and turn the aperture ring on the front to f2.8 and press the trigger. A little awkward, I know, but if you need to be sure it triggers this is the way to avoid frustration. 

The light sensor is right next to the lens and will be covered by any filter attached, this removes the need to manually compensate for this.

Light sensor inside the filter ring

The ISO range goes from ISO 25 to ISO 800 beyond this you need to use manual mode. 

ISO selector

Focusing, the focus ring has a short swing and the rangefinder patch is relatively easy to line up. Making it quick to focus with, if one now can say that for a non AF camera.
distance scale

One feature that you may encounter, while reading up on this camera, is Guide Number automatic flash exposure. While it is a nice feature to have that simplifies flash photography, it seldom comes to use. I bought a small flash, for the time, with the camera when I acquired it but used it only a few times.
A) Simple head on flash seldom makes nice photos.
B) The camera is small. This is beauty of the camera! Putting on a normal flash and it immediately becomes unbalanced and bulky.


I guess the flash was more useful when the camera was introduced on the market and most films were slow. With ISO400/800/1600 films it seldom feels justified to work with the flash.
Either way here is how to use it, you set the GN number of you flash on the small lever on the lens. Then just focus and the camera will automatically calculate which aperture you need. Could not be simpler.


GN selector

Battery

Talking about batteries, the camera is designed for a PX625 mercury battery which is long out of production. One can replace it with Wein Cell MRB625 but I have so far using another cheat, hearing aid batteries (zinc air) that deliver 1.4V. They drain quite quickly and cost a fraction of the Wein Cell but as I have many camera that need to have film run through them from time to time it is an adequate solution for me. I have also tried normal 1.5V button cells and it also works but the metering is not correct and one need to use the ISO dial to compensate which is not so difficult, as almost all of us has a smartphone where a light meter app can be downloaded and used for calibration.

It is also possible to calibrate the sensor by unscrewing the bottom of the camera and turn a dial to compensate. See Rick Oleson's drawings.

And oh , don't forget to set the aperture ring to off when you don't use the camera to avoid draining the the battery

Samples

As usual no tool is better than it's master. I am not claiming I do the Olympus 35RC justice but here are a few samples from my private collection that I like.

Hangzhou, China
Olympus 35RC, Kodak Tri-X 400

The Vyne, foggy morning,
Olympus 35RC, Afga 400 (V34)
The Vyne, foggy morning,
Olympus 35RC, Afga 400 (V34)
California, USA,
Olympus 35RC, Fuji Astia
California, USA,
Olympus 35RC, Fuji Astia



Manhattan, NYC, USA, 1980s
Olympus 35RC, Fuji ISO100 film
Me at Suzhou, China
Olympus 35RC, Fuji Astia

Tuesday, 7 August 2018

C41 film in CD3 (RA4 developer)

I have read about developing C41 film in CD3 developer from the RA4 process before in a number of forums but very few samples were posted and lots of arguments among the authorities on development and some enthusiastic free thinkers willing to experiment claiming success.
I stumbled into this DIY experiment after acquiring some RA4 as a hack to my C41 chemicals to process ECN-2 film. By mistake I loaded the wrong roll on to the reel. When I opened my changing bag I saw the canister of a Fuji NPZ instead of the Fuji Eterna that I intended to process. As I was out of C41 developer, I stood in front of the decision to either reattach the film to the canister and load the Fuji Eterna, or just go for it. I did the latter.

Processing

The processing was done in a rotary processor at 38degC.

Step 1: 3min in RA4
Step 2: 6:30min in C41 Bleach
Step 3: 3:30min wash
Step 4: 6:30min in C41 Fix
Step 5: 3min wash
Step 6: 1:20min stabilizer

Apart from the CD3 from RA4 the other steps used C41 chemicals from a Fuji Hunt C41 kit, where the developer (CD4) had gone bad.

Scanning

So how what was the result? Well, ocular inspection of the film looked normal.
The film was shot at EI400, which is how I normally rate my expired Fuji NPZ.

I occasionally shoot calibration shots, unfortunately I had not done it this time as I did not plan for this first C41 film in RA4.  After this initial trial, I did shoot three more rolls of Fuji Pro400H and NPH in RA4 developer with calibration shots which I used to create a profile for this more systematic test (see Second Round below). I was pretty certain that with film calibration the results would be good, but what about standard C41 color conversion? Below I have taken the same framed scanned/converted it with Silverfast and Vuescan with different settings.


As you can see, the result varies. I think while none of the is impossible to adjust to satisfaction in Lightroom. I would select (C) or (D) as starting point. The skin tones look natural, there is some small cast that needs to be address but in general quite OK. (F) might look good at a first glance but is over saturated, even if saturation is brought back the skin tone does not look right, and  it also suffers some loss of shadow details.  (E) also suffers loss of shadow detail.

Interesting is that correcting (A) (the one with heavy magenta cast) is down to two corrections.  Just change the white point for blue and green in Lightroom and the cast is gone. A slight hint of magenta cast still can be spotted but many Fuji films have this characteristic.

 

It seems strange that Silverfast gets this wrong. According to the histogram there seems to be almost no samples in the top 15% of the range for the blue and green component. Maybe CD3 uses 15% smaller space for green and blue and Silverfast profiles are operating with some pre known knowledge in which range the color samples can be found?? (note I did not touch the "auto tolerance" which does improve the result somewhat)




There is a contradiction the sample material if you are looking for what CD3 (RA developer) instead of CD4 (C41 developer) does to the negative.
With Vuescan the most color accurate one (F) was converted with a C41 NPZ ICC film profile that I created in Vuescan based on a IT8 target in a Fuji NPZ frame from a previous roll developed in C41. It would lead one to believe that CD4 and CD3 produces the same result. However the worst color accuracy is (A) based on using the Fuji NPZ profile in Silverfast (w/o CCR). The result becomes better with CCR turned on, which is probably closer to the Vuescan autolevel feature does to the processing. My guess is that CD3 (RA4 developer) changes the dye components density, confusing the Software which part of the scan range for each color (RGB) to apply the curve to. When the start and end points are correctly located for each color the response (curve) remains similar between the two developers. What this experiment does not tell is if that start to end piece of the range is larger or smaller just that when the range is located the response curve is correct applied to that range. I have no experience trying to produce a print with photo paper in RA4 process so I cant tell if this matters for this.

decode key
SF = Silverfast
VS = Vuescan
SF NPZ C41 profile  = Standard Silverfast Fuji NPZ profile
VS NPZ C41 profile = Custom calibration profile for Fuji NPZ developed in C41 created in Vuescan based on a IT8 target. You will not have it unless you create it yourself.
Pro400H RA4 profile = Custom calibration profile for Fuji pro400H developed in CD3 (RA4 developer as this blog entry describes) created in Silverfast AI based on a QP203 target.
You will not have it in SF unless you create it yourself.

CCR = Color Cast Removal in Silverfast language
autolevel = one of the methods in Vuescan to manage white balance 
Generic = Generic profile for C41 film not brand to type related

Going indoors



In the mixed lighting, the CCR in Silverfast needs to be turned on to reduce the cast.
In my mind (I) is the best base to start from. 

Second round

Encouraged by the partial success I decided to tryout with some expired Fuji Pro400H that I exposed at EI200. Processing was done as described above. With some more attention to avoiding water marks this time and also adding calibration shots.

As a the template for the calibration I used the Fuji NPH profile in Silverfast AI and calibrated the grey scale patches on a QP203 card. I also added a IT8 target in the calibration shot to create a calibrated ICC profile in Vuescan.
This time there is no doubt (A) is the best starting point for further processing.

Final thoughts

Is it possible to develop film in CD3 (developer for RA4)? The answer is yes.
Will scanning software Vuescan/Silverfast be able to produce usable scans with the built-in profiles? The answer is yes, but autolevel/ccr or manual tweaking is needs to be applied.
For best results I have to admit custom calibrated profile's are needed.

Should I continue to develop C41 film in CD3 (RA4 developer)? This is not a clear cut. While it is possible to produce good end results, I am hesitating as it is sort of proprietary and require calibration to achieve high quality color results. What if one try to rescan w/o having the tools for calibration at a later stage? I am less concerned over the often claimed issue of going through a paper printing process due to different color response on the intermediate negative as I (or someone else) unlikely will ever do that with my shots.

PS

Working with all setting in Silverfast and Vuescan can produce better starting positions in Lightroom but I seldom do as a part of my work flow. Only with tricky negatives and slides I work more inside the scan tools, all other work I prefer doing in Lightroom as it is easier to experiment and change the mind.

Techie notes
All frames were scanned with a Microtek M1 using Silverfast AI Studio 6.6.
Vuescan converted images was first scanned with Silverfast in raw mode "48 bit HDR Color" as Lasersoft calls it. Output from Silverfast was set to Adobe RGB TIF files(all negfix profiles as based on Adobe RGB in Silverfast)

In Silverfast I applied each profile, I wanted to test, to the scan and used image auto adjust. No other changes in Silverfast. The Silverfast images are prefixed with SF.

In Vuescan I loaded the frame and used the generic film profile and did variations using autolevel/fluorescent (where applicable) and selected no film ICC vs IT8 calibrated film ICC profiles. Output profile was set to Adone RGB in TIF files.

I did manual exposure adjustments in Lightroom to make them look similar bright. 

The "contact sheets" were produced in Lightroom through the print to file function with SRGB output.