Canon EF 24-105mm f/4L IS II: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA

At a glance:

• EF-Mount L-Series Lens/Full-Frame Format
• Aperture Range: f/4 to 22
• Four GMo Aspherical Elements
• Air Sphere Coating
• Ring-Type Ultrasonic Motor AF System
• Optical Image Stabilization
• Internal Focus; Full-Time MF Override
• Zoom Lock Switch; Fluorine Coating
• Dust- and Water-Resistant Construction
• Rounded 10-Blade Diaphragm

LensRentals posted their MTF lab test results for the Canon EF 24-105mm f/4L IS II, and while they stress that they made only a MTF test and not a real world test, the figures for the new EF 24-105mm f/4L IS II are not so much superior to the figures of the lens it replaces, the EF 24-105mm f/4L IS. In the conclusion, Roger Cicala writes:

[…] on the basis of MTF, the 24-105 f/4 IS II is a decent lens, but not a spectacular upgrade. Would I upgrade my old 24-105 f/4 IS? Nope. If I was in the market would I buy one? Well, I’d wait for the price to come down or for it to be available as a kit lens with a new camera. One other thing to consider is that the new 24-105mm is significantly larger than the original version, and for some people, that’s going to be a negative for a walk-around lens. Read the review…

The new EF 24-105mm f/4L IS II sells for $1,099, the previous version is yours for $623.

Canon EF 16-35mm f/2.8L III: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA

At a glance:

• EF-Mount Lens/Full-Frame Format
• Aperture Range: f/2.8 to 22
• Three Aspherical & Two UD Elements
• Subwavelength & Air Sphere Coatings
• Ring-Type Ultrasonic Motor AF System
• Internal Focus; Full-Time MF Override
• Fluorine Coating on Exposed Elements
• Dust- and Water-Resistant Construction
• Rounded 9-Blade Diaphragm

ePhotozine posted their review of the Canon EF 16-35mm f/2.8L III. a highly regarded, professional wide-angle lens. In the conclusion they write:

We have weather sealing, outstanding performance, solid construction and a very high price. We lose IS, but that may be more acceptable in wide angle lenses. Really the question is not so much is the lens worth the price, it quite probably is, but whether or not our budget can justify the large margin between it and the alternatives.

If that equation can be satisfied for the individual photographer, then certainly the lens will not disappoint. Read the review…

The reviewers praise the excellent sharpness of the EF 16-35mm f/2.8L III, the very good correction  of chromatic aberrations, the absence of flare, the outstanding build quality and the weather sealing. All this goodness comes at a price, the EF 16-35mm f/2.8L III sells at $2,199.