Thanks to the help & advice here, I have purchased a 5x4 Linhof dark slide holder - I am just looking to make sure I have got the procedure right for using this with glass plates ? the slide holder has metal plates at the back of it which depress in- I am assuming this is so I can slide in a glass plate and/or film. So do I just take out the slide - the bottom section then spings up - and insert my glass plate - then put the dark slide back in ?. I am also assuming emulsion side forward on the plate toward the lens ? There are two levers at the top of the slide - I am assuming these are to assist removal of the glass slides once exposed ? Lastly can anyone give me the exact dimensions to which I must get the glass cut to correctly fit these slides ? I am guessing I can use a 5x4 film sheet to get the correct length & width - but what thickness do I need for the glass plate to fit correctly ? Thanks for any help.