Ilford Delta 100 Professional

Development Comparison

SPUR Omega X
Adox FX-39 II
Ilford ID-11 (1+3)
Ilford ID-11 (1+1)

SPUR Omega X

SPUR Omega X produces a remarkably balanced tonal scale with smooth gradation in the midtones and excellent detail rendition. The grain structure is exceptionally uniform while maintaining crisp edge definition. Overall sharpness appears precise yet natural, resulting in a three-dimensional, realistic impression. Highlights retain full texture, and shadow areas remain clean and well separated. The overall rendering is neutral and technically refined — ideal for subjects rich in fine detail.

Adox FX-39 II

Adox FX-39 II emphasizes microcontrast and delivers a very sharp, almost graphic appearance. The grain is slightly more pronounced than in Omega X, yet remains uniform and clear and well-defined. Midtones exhibit differentiated reproduction with a somewhat higher contrast, while highlights and shadows show stronger separation. Fine structures — such as wood grain and flower textures — are rendered with exceptional precision, making this developer particularly suitable for subjects where surface detail and texture play a central role.

Ilford ID-11 (1 + 3)

At a 1 + 3 dilution, Ilford ID-11 produces noticeably greater apparent sharpness due to increased microcontrast and more visible grain. The grain appears lively but remains consistent and unobtrusive. Tonal distribution is harmonious, with good differentiation throughout the midtones. Highlights are slightly more pronounced, giving the image a dynamic, somewhat stronger overall contrast. This combination is especially effective for images where structure and clarity are the primary focus.

Ilford ID-11 (1 + 1)

Processing in ID-11 (1 + 1) yields a very fine, restrained grain and smooth, even tonal gradation. Contrast is somewhat lower than in the 1 + 3 dilution, resulting in softly rendered midtones and a balanced overall impression. Sharpness is good but less accentuated, giving the image a calmer, more classic look. Highlights are well differentiated, and shadows preserve full detail. The result is a refined, traditional black-and-white image — ideal for portraits and still-life subjects with subtle tonal transitions.