Glad you liked it, thanks

If your working in a darkroom , then working with a stop 5 stop textural range is the normal, if you include the none textural range then the range is extended , in the scanning workflow you can push the working range to 7 stops plus the pure blacks and whites

You are welcome, any questions I will try to answer, thanks

Glad you enjoyed it!

Your welcome, and, I applicate you taking the time to view the video

Thank you

Glad it helps, once the penny drops it’s quite easy to work with zones, always remember for black and white film, expose for the shadows develop for the highlights, easy to do with sheet films , thanks

Hi Mr. Henson! When I look at these videos, I always remember that image that popped up with that "Oh my goodness!" expression. And I am sure it was not easy to put these two videos together. Especially now after months of studying the same two videos. I bought me a spot meter like yours and am really starting to get the swing of it. I just wanted to write to you and tell you how much I appreciate all that you put into these videos! Thank you for being my teacher!

Many thanks!

You're welcome

Thank you for your comment and I do take on board your remarks about side notes, something I have given no thought to, I will increase the sizes in the future

@@martinhensonphotography Thank you.

Ideally you should apply exposure and development times to each individual negative to achieve the desired print, however, when a full roll is processed in the same developer at the same times, you really have lost a lot of control of the end result, some frames will be good others not ideal, you could carry two cameras, one for sunny days the other for dull days and develop as a compromise, or, use a developer such as Diafine were on bright days you set a higher iso and on dull days reduce it, all on the same roll of film, the dev time will still be the same regardless of iso, this will help in controlling contrast and density. It is a compromise and as I said in the video the zone system works best on individual sheets y

@@martinhensonphotography Thank you so much.

I use Diafine and know that for HP5 roll film, they recommend shooting at ISO 800 (640 for sheet film). I had not heard about shooting at different ISOs for different light conditions. Could you expand on this or perhaps do a short video on Diafine?

@@jiml989 If you think about it and what's happening to the negative when your alter the iso, so you shoot HP5 at 800iso on good days, then you lower the iso to say 200 iso on dull low contrast days, the negative is receiving more light and the contrast and density builds up more than at iso 800, so on a dull day the lower iso will allow more shadow detail because of the prolonged exposure, because Diafine is a compensating developer the shadows are developed normally but the higher values are restricted because of the way Diafine works, it exhausts quickly in those areas so you end up with a printable negative with good highlights, its a better in some ways than pushing film as you loose shadow detail, grain increases and the contrast can get to high, although some people like the effect of underexposing and increasing development times (you also get higher shutter speeds). Diafine is a different way of working and your not relying on extended times to recover from underexposure, you end up with finer grain and good negative's, I can assure you can alter iso on the same roll as and when needed and use the same dev times, try it and see

@@martinhensonphotography Thanks so much for the detailed reply!! I have learned so much from your videos. Can't wait till the next one.

Colour film, expose for shadows , slide film expose for highlights

@@martinhensonphotography to keep this in ZS, I would still meter color film for Zone III or even IV, and color slide at Zone VI right?

@@BillPutnamPhoto Yes your correct with the zones, you can use the zone system for slide film but in a limited way as the dynamic range of slide film is a lot smaller than negatives so for slide place the highlights on zones 6 or 7. Colour negative has a large DR, place shadows on z3 and the highlights will rarely blow out

@@martinhensonphotography Thanks. This will make my life moving forward a lot simpler! side note: I've been metering my slide film, regardless of stock, from Zones IV to VI but exposing for the latter. I'll let you know how it turns out when the film arrives back.

@@BillPutnamPhoto should be fine, its not set in stone, you have to experiment to find out what way works best with your own equipment

No, You multiply the N+1 time by 1.4 not your normal dev time, to move the tones two stops To move them one stop , multiply your normal time by 1.4 So lets say you normal dev time is 10mins, to move zones 1 stop, 10mins x 1.4 = 14mins To move tones 2 stops 14mins x 1.4 = 19.60 mins these are starting points and experimentation is a good way of achieving optimal results Thank you

@@martinhensonphotography thanks a lot for the detailed explanation

By measuring the darkest area with faint detail then measure the brightest highlight with detail, the difference is the dynamic range

@@martinhensonphotography for example if the darkest area with details is in area 3 and the brightest in area 9, the dynamic range will be 9-3 so 6, right? thank you very much Martin, very educational and interesting, thank you.

@@jeanjeanjean4360 yes correct

last question Martin and I promise I'll stop bothering you; for you what is the right amplitude of a dynamic range? 7? below? sorry to ask you all these questions@@martinhensonphotography

When you stand develop you cannot adjust times so yes correct