Reviews: Interchangeable Lenses

SMC Pentax-F 50mm f/1.7 Lens Review
Fast, sharp 50mm F Series vintage lens from Pentax. John Riley reviews this easily adapted, widely available f/1.7 classic, sharing sample photos, MTF & CA performance charts along with his verdict of this standard length K mount lens.

HD Pentax-D FA 21mm f/2.4 ED Limited DC WR Lens Review
John Riley reviews the premium full-frame HD 21mm f/2.4 Limited lens from Pentax. How does this beautiful lens measure up, John shares MTF & CA Charts, along with sample photos and his verdict.

SMC Pentax-M 50mm f/1.4 Lens Review
Superfast 50mm M Series vintage lens from Pentax. John Riley reviews this easily adapted, widely available f/1.4 classic, sharing sample photos, MTF & CA performance charts along with his verdict of this standard length K mount lens.

SMC Pentax-M 50mm f/1.4 Versus f/1.7
Supplementary article comparing bokeh and sharpness between two popular vintage versions of the M Series 50mm from Pentax.

SMC Pentax 135mm f/2.5 Lens Review
John Riley reviews the Pentax 135mm f/2.5 telephoto K Series lens with a bonus comparison with the Takumar (Bayonet) 135mm f/2.5 - John provides sample photos, MTF & CA charts along with his verdict on both lenses.

SMC Pentax 85mm f/1.8 Lens Review
Reviewed this time is the Pentax 85mm f/1.8 from the original K Series of lenses. With a focal length of 85mm typically ideal for portrait photography, John Riley put this vintage lens to test, providing sample photos along with MTF & CA charts.

SMC Pentax 28mm f/2 Lens Review
The Hollywood - John Riley puts the fast K series Pentax 28mm f/2 lens to test, providing sample photos, MTF & CA charts along with his verdict of this lens with a big reputation.

Zenit MC Helios-44K-4 58mm f/2 Lens Review
John Riley reviews the K mount version of the Zenit MC Helios 58mm f/2 lens, a vintage optic based on the Zeiss Biotar lens design that is ideal for portrait photography. John provides sample photos, MTF & CA test charts along with his verdict.

SMC Pentax 55mm f/1.8 Lens Review
John Riley reviews the Pentax 55mm f/1.8 manual focus K mount lens from the 1970s. Is this relatively inexpensive easily adapted lens worth buying? John puts it to test providing MTF & CA charts, sample photos and his verdict.

SMC Pentax-M 100mm f/2.8 Lens Review
John Riley reviews the slightly rarer 100mm f/2.8 telephoto from the Pentax M Series of lenses. How will this small & light lens perform? John provides his verdict along with sample photos and test charts to help answer that question.

SMC Pentax-M 135mm f/3.5 Lens Review
Looking for some additional reach for your photography? This affordable vintage 135mm f/3.5 Pentax-M Series K mount lens could just be the answer. John Riley put the lens to the test and provides sample photos, MTF & CA charts along with his verdict.

Vivitar Auto Macro 55mm f/2.8 Lens Review
Is there still life in older lenses? Absolutely, John Riley reviews this 55mm 1:1 magnification macro lens branded Vivitar which was made by Komine, a manufacturer that's gathering a new cult following.

SMC Pentax-M 50mm f/1.7 Lens Review
Fast, sharp 50mm M Series vintage lens from Pentax. John Riley reviews this easily adapted, widely available f/1.7 classic, sharing sample photos, MTF & CA performance charts along with his verdict of this standard length K mount lens.

Ricoh XR Rikenon 50mm f/2 S Lens Review
The Ricoh XR Rikenon 50mm f/2 S vintage lens is a budget friendly addition to any photographer's kit. John Riley puts this manual focus Pentax K mount lens that's easily to adapted to most Mirrorless cameras to test, providing sample photos along with MTF & CA charts too.

SMC Pentax-M 28mm f/2.8 Lens Review
John Riley reviews the beautifully crafted vintage SMC Pentax-M 28mm f/2.8 lens from the late 1970s early 80s. Read how a legacy lens from this era performs compared to modern standards, along with viewing sample photos, MTF & CA charts from testing this lens.