Measuring light on snow with Pentax 67

Dear Pentax 67 (6x7) users!

How do You measure exposore on snow?
My first velvia slides from Pentax 67 were underexposed,
I was shooting with Pentax PZ-1p before and this camera has so sophisticated measurement system that it was not needed to do any
corrections. But this is not true with Pentax 67, I was comparing it
with my PZ-1p, it seems so I must correct Pentax 67 with +1 ... +1,5
EV to have good exposed slides when measuring snow.

Another situation is when taking pictures of scene where is the sun.
Than it may be about +4 with Pentax 67, as it´s metering system
can not to be switched to point metering, I think I have to measure
light on snow and add +1 EV, or measure the sky as it is close to
18 percent gray.

thanks for Your ideas

sounds to me like you figured it out...
ps there's a couple more ideas....spotmetering on the subject....taking a reading off your hand...graycards...handheld meters...

Metering more art than science, (many will argue) but truthfully it'll take a trip to the library or bookstore and some reading.

Pros? you get more control of the image making process and have to think more which'll give you more incentive to pay attention to other details like composition and light and subject matter...

Think military snipers with one shot one kill vs marines hit'em hard and fast with tons of lead in the air.

Have a look at / listen to this excellent site.

http://www.tipsfromthetopfloor.com/page/3/

tfttf75 in particular explains why some of your snow scenes might be underexposed.

Chris has a unique pocasting style but the content is first rate.

Regards, Pete Smith.

When using my Penatx MZ50 35mm for the first time in snow conditions, ie a couple of portrait shots of friends with a total white out snow back ground (and very sunny conditions) I just used the EV, I overexposed at 0.5,1.0 and 1.5. and took a couple of shots at each level.
I found that 1.0 was generaly OK, and 1.5 when the back drop was effectively a mirror (ie sun right behind me)

Same principals shouls apply for your shots.

There is only one accurate way, in my opinion, of getting exposure right and this is particulary true in the circumstance you describe; just as it would in the opposite situation of the proverbial black cat in a coal cellar.

Incident rather than reflective metering.

The other posts in this thread offer sensible and accurate advice if you insist on using the built in meter, but if you have gone to the expense of a 67, get a lproper hand held light meter! The minolta ones are very good.

Ken

Quite right, Gartmore.

Reflective light metering only exists because it is convenient. Incident light metering is the proper way to do it.

G

I agree with the others about Incident Metering: I use my Weston Master V with invercone and have no trouble with slide films; it also depends on if the SHUTTER SPEED is accurate if you are not using TTL metering. The electonic shutter should be OK but I have had my Spotmatic tested (clockwork shutter) and 1/500th and 1/1000th are running fast so would cause under-exposure.