Kostas, depth of field given a particular focal length and aperture should be the same ... unless the basis for the determination is different. Like acceptable circle of confusion. Andy ________________________________________ From: PhotoForum <photoforum-bounces@xxxxxxxxxxxxx> on behalf of Kostas Papakotas <clenchedteethphotography@xxxxxxxx> Sent: Monday, November 14, 2022 5:27 PM To: PhotoForum educational network Subject: Wide Zoom lens question hi members! I would like to get your impressions & experiences regarding a Wide Zoom lens I intend on buying. it is the Sigma 17-35 mm F2.8-F4.0 EX Lens. Some time ago I bought a similar Pentax model, the Pentax-FA J 18-35mm F4-5.6. which proved to be unacceptable regarding the expected large depth of field (by starting at F/4) Thing is the FA J has stolen monetary resources I could have used to buy a single better lens all together. Now I will have to settle for the Sigma one. What do you think? Links https://www.pentaxforums.com/userreviews/sigma-17-35mm-f28-4-ex-aspherical.html DG Version https://www.imaging-resource.com/lenses/sigma/17-35mm-f2.8-4-ex-dg-aspherical-hsm/review/ https://www.dpreview.com/articles/8643959634/sigma1735mm
