CI Photocommunity

Register a free account now!

If you are registered, you get access to the members only section, can participate in the buy & sell second hand forum and last but not least you can reserve your preferred username before someone else takes it.

15X loupe


I have a Zeiss 5X loupe for viewing slide. I love it very much as it is sharp and bright..... Now I am looking for a higher magnification loupe to identify sharpness and select slide for 20"x30" print. I'm thinking of a 10 to 15X loupe..... There is a Schneider 10X loupe. Is there anyone can help to comment or give me other suggestions. Thanks.


[This may sound too simple, but for a large print I usually project the = slide first to decide if it is sharp enough. ]


I use the 4 or 5x loupe to judge the overall composition of the slide. For enlargement, my experience is that the slightest blurring, handshake or out of focus shows up. The rule I use is that if the final print is x times the film image size, the loupe should also be around x times. For 35mm full frame printing to 20 in by 30 in, one would need 15x to 20x loupe. For medium format, the same rule applies. They are useful only for viewing sharpness because the extent of vision is limited. But even a cheap 15 x loupe saves a lot of money lost on unsharp enlargements. I use a very cheap Peak (Japanese) 15x loupe. The 22x is very limited in field of view. For 8x, I use the Rodenstock. Good luck for your enlargements.


Another tip - use portable microscope, such as Edmund Optics. I have one, it's great.