View Full Version : Having trouble to get right exposure
PatrickMarq
6-Aug-2019, 05:03
Hi all,
I'm at the moment in the Azores and find it difficult to get a good exposure of a graveyard.
The light is harsh even in the evening, and the problem is that the graveyard is only open between 09:30 and 18:30 :-(
The buildings are all pure white with black volcanic stones.
194070
The white (air) is about 1/30 sec and the door about 1/2 sec, the most dark is about 2 sec.
How what would be the best exposure, I did one exposure of about 1/15 sec ...
Mark Sampson
6-Aug-2019, 08:35
B/W? Color negative? Color transparency?
If in B/W, using the same f/stop, try exposing at 1/8" and 1/4". Then reduce film development time by 20%. This will reduce the contrast.
Doremus Scudder
6-Aug-2019, 11:31
You have more than one sheet of film with you, don't you? Expose several at different exposures (i.e., bracket!) and see which one gives you the results you desire. Keep notes and learn from the experiment. The learning experience alone should be worth the extra sheets of film.
Best,
Doremus
And use the clouds to help create a softbox -- make your exposure when the shadow lines become faint.
ic-racer
6-Aug-2019, 12:10
If it is black and white film, one would expose the shadows so they have 'just a hint' of detail in the negative. You can spend your lifetime calibrating your system such to know apriori what exposure will place the shadows on the portion of the film curve where the gradient is one-third the average gradient of the film, but some bracketing of exposure can lead to a great print too...
PatrickMarq
6-Aug-2019, 13:24
forget to say it's Kodak Ektar 100
PatrickMarq
6-Aug-2019, 13:26
Yes, I have about 30 sheets with me for 20 day's, so I'm a bit careful
.
Doremus Scudder
7-Aug-2019, 10:36
Bracket a couple of sheets, erring on the side of slight overexposure and you should be fine. Do try to use Vaughn's trick of using the right moment to get the lowest possible contrast. Base your exposure on the low values (shadows), not the high values and you should be fine.
Best,
Doremus
Pere Casals
8-Aug-2019, 04:17
From 2s to 1/30 you have 7 stops dynamic range in the scene.
To nail exposure in that scene you need next:
> Graded ND filter for the sky to reduce that range.
> A shutter tester to know how your shutters expose.
> Having tested 35mm Ektar with bracketings and spot metering to know how detail is depicted for each level of under/over exposure, so you know what quality you sacrifice in the shadows and in the highlights when you make a decission.
If you lack those resources then your best best is being a bit conservative, I'd place at +1/2 or +1 overexposure the important areas, if very deep shadows are black this is not usually important for the aesthetics.
PatrickMarq
8-Aug-2019, 04:31
I was lucky yesterday, a cloudy day and soft light. Just on our last day on this Island, now on to the next one.
Thank you all for the good tips.
Alan Klein
8-Aug-2019, 07:08
I found your picture oK. Looks fine to me. A couple of extra bright surfaces are not that noticeable, at least in a small size you presented. The "shadow" areas look fine. Exposure looks correct.
PatrickMarq
5-Sep-2019, 05:24
At last the negatives are back, and it seems that I have the shot almost perfect.
Rodenstock 150/5.6 - f45 1/2 sec - Kodak Ectar 100
A quick DSLR scan
195193
PatrickMarq
10-Sep-2019, 07:14
Thank you Alan.
Sirius Glass
11-Sep-2019, 14:03
One way: Start with an incident meter, then bracket above and below to be sure
Another way: Use the Zone System by putting the darkest detail in Zone 2 or Zone 3. Then an exposure with the brightest in Zone 7 or Zone 8. Also take the information from the two sentences and determine the exposure.
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