Sony FE 100-400 F4.5 GM OSS Lens Review @AlphaCreativeSkills

Uploaded May 2026 | Updated September 2026, 2 weeks ago

Sony FE 100-400 F4.5 GM OSS Lens Review
Sony now has two FE 100-400 GM lenses and this is not intended as a replacement for the original 100-400. The key advantages to this new lens is its constant F4.5 aperture and internal zoom. This review looks at the key features and its performance with, and without, teleconverters.
Pre-order the new 100-400 from B&H photo: bhpho.to/4dnlG3M
Check out the ultra high-definition photos: https://flic.kr/s/aHBqjCTkY2
Raw images can be downloaded from my Patreon support channel: Patreon.com/markgaler

00:00 - Introduction
02:08 - Overview
02:39 - Premium Features
08:49 - Not a GM II
11:43 - Smaller, Lighter and Faster
13:42 - Performance Part A
18:13 Teleconverters
21:08 - Performance part B
23:12 - Sony's Competing Lenses
26:31 - Concluding Remarks

Mark Galer is a Sony Alpha Ambassador for Australia.
Join Mark Galer on Patreon for the best Alpha Support and Guidance. A single $10 Membership fee includes access to over thirty 1-hour member-only seminars, 'over 30 downloadable' eBooks + cameras setting (CAMSET) files (there is no contract or commitment beyond the first month). patreon.com/markgaler
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$Sony FE 28-70 F2 GM Lens Review A wide aperture Standard Focal-Length Zoom Lens is a new design-concept for Sony. The lens offers the photographer the F2 wider aperture, normally only seen on prime lenses, but with the flexibility of using a zoom (eliminating the need to constantly switch focal length lenses). This will allow the photographer using this F2 G Master zoom, the ability to more easily create figure/ground separation or increased background blur (bokeh). Designing an F2 zoom has added weight, over-and-above an F2.8 zoom, but Sony has managed to keep this lens to a fraction over 2 lb or just below one Kilogram in weight. In this review I compare its optical performance with three of Sonys F1.8 prime lenses (stopped down to F2). This exercise demonstrates that it is possible to build a no-compromise wide-aperture lens that can out-perform a prime lens across its entire zoom range. This review provides the photographer with the information so they can make an informed purchasing design and to choose a workflow that best suits their needs. Album of Ultra High-Definition Images: https://flic.kr/s/aHBqjBRJr9 Purchase Link: https://bhpho.to/3Zh91tC Purchase link to the Pilot 7L messenger bag: https://bit.ly/4fTkMvF Purchase link to the Paratrooper Wrist strap: https://bit.ly/4cNajB3 00:00 Start 01:55 Competing Lenses 02:44 Size and Weight 05:16 Little or Large 06:49 Three in the Bag or One in the Hand 09:04 Lens Features 11:00 Specifications 12:50 Focus Breathing Test 13:28 No Compromise to F1.8 Primes 19:53 Close Focusing 21:44 Bokeh at F2 29:14 Filters Mark Galer is a Sony Alpha Ambassador for Australia. Join Mark Galer on Patreon for the best Alpha Support and Guidance. A single $10 Membership fee includes access to over twenty 1-hour member-only seminars, over 20 downloadable eBooks + cameras setting (CAMSET) files (there is no contract or commitment beyond the first month). https://www.patreon.com/markgaler Marks supporting website: http://www.markgaler.com If you find Marks work for the Alpha community helpful please consider making a donation to support the creation of new learning resources for Alpha users. Go the Donations link: https://www.paypal.com/paypalme/alphacreativeskills #SonyAustralia #SonyAlpha #SonyAmbassador #SonyAlphaANZ #sonydigitalimagingambassador sonydigitalimagingambassador$

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