tag:blogger.com,1999:blog-17534827.post5437281324668136854..comments2024-03-27T22:02:52.479-04:00Comments on Digital ProTalk: F-Stop Friday - The F-Stops Here At F4.0David Ziserhttp://www.blogger.com/profile/02674227631785266632noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-17534827.post-39031285532118880992009-02-16T17:01:00.000-05:002009-02-16T17:01:00.000-05:00@bl, yes, that's correct. I don't know the exact n...@bl, yes, that's correct. I don't know the exact numbers, but assume it's the equivalent of around 1 stop, with less DOF on the FF sensor. Which is in line with what is know of DOF, it goes thinner the larger the sensor, at the same fstop. But I never had a FF camera, so that's just theory! ;)<BR/><BR/>Regards!<BR/>BMBMhttps://www.blogger.com/profile/09462836817608039286noreply@blogger.comtag:blogger.com,1999:blog-17534827.post-39822140475498087502009-02-16T10:01:00.000-05:002009-02-16T10:01:00.000-05:00@BM...thanks, I think we are saying the same thing...@BM...thanks, I think we are saying the same thing basically, less DOF on a FF than on a cropped sensor at the same f-stop, correct?<BR/>blb lorenzhttps://www.blogger.com/profile/03168981656484828485noreply@blogger.comtag:blogger.com,1999:blog-17534827.post-34769967825350846262009-02-16T06:18:00.000-05:002009-02-16T06:18:00.000-05:00bl, as far as I know, a f/4 (APS-C) DOF matches a ...bl, as far as I know, a f/4 (APS-C) DOF matches a f/5.6 (FF) DOF. Conversely, a f/4 (FF) DOF is equivalent to (APS-C) f/2.8.<BR/>There was a long debate a while ago about these equivalencies in DPReview. Very interesting reading.<BR/>Since David is generally using crop-sensor cameras, this f/4.0 post is probably about that. :)<BR/>Regards.BMhttps://www.blogger.com/profile/09462836817608039286noreply@blogger.comtag:blogger.com,1999:blog-17534827.post-89389475248089900332009-02-15T10:59:00.000-05:002009-02-15T10:59:00.000-05:00David, f4, is that on a cropped sensor of FF? Am I...David, f4, is that on a cropped sensor of FF? Am I correct in thinking that the DOF on a FF will be less than on a cropped sensor? I shoot large groups 3 rows deep all of the time and was comfortable at 5.6 on a cropped sensor w/a 50 mm lens, and when I tried 5.6 on a 5DmkII and an 85mm lens I noticed a bit less DOF on the few groups I've worked w/so far, and was considering f8 for this seasons group, btw I used to love 60 sec f4 with an RZ and 180mm lens.<BR/>blb lorenzhttps://www.blogger.com/profile/03168981656484828485noreply@blogger.comtag:blogger.com,1999:blog-17534827.post-36290190046647457942009-02-14T23:38:00.000-05:002009-02-14T23:38:00.000-05:00Great Post! I love your BLOG!My blog is far from c...Great Post! I love your BLOG!<BR/><BR/>My blog is far from complete, as far as setting up goes, and I really want my blog to be as informative and peaceful as yours.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-17534827.post-59672947927000090032009-02-14T08:33:00.000-05:002009-02-14T08:33:00.000-05:00David, thanks for this post and your insight. What...David, thanks for this post and your insight. What is your prefered distance in terms of the subject and his/her background? In the photos you have posed, they appear quite far apart. By the way, thanks for all the teaching you do.<BR/>BruceAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-17534827.post-72535138294594178322009-02-14T05:54:00.000-05:002009-02-14T05:54:00.000-05:00Though I realized you were not a speed freak (no f...Though I realized you were not a speed freak (no f/2.8 addict), I didn't thought you were a f/4 fan.<BR/>That makes sense, but it also renders some f/2.8 supporters' reasoning useless (like "use f/2.8 for everything, as it's the only aperture that wedding photogs should use").<BR/>You have the 70-200 f/2.8 IS, but for this type of shots, the 70-200 f/4 IS would suit just about the same, right? Sure, it wouldn't be as versatile, but I think that, for most part, it's great!<BR/>I can't wait for your posts on this new series! :)<BR/>Thanks for your insights!BMhttps://www.blogger.com/profile/09462836817608039286noreply@blogger.comtag:blogger.com,1999:blog-17534827.post-48693894195854162072009-02-13T14:27:00.000-05:002009-02-13T14:27:00.000-05:00David, Priceless information as always! What ISO ...David,<BR/> Priceless information as always! What ISO do you typically use with the 4.0/125-200mm focal length combination?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-17534827.post-82052227291046700882009-02-13T14:10:00.000-05:002009-02-13T14:10:00.000-05:00Hi David. You have once again given us a great dea...Hi David. You have once again given us a great deal of amazing information. Thank you for your posts. I have shot a handful of family portraits and always start with f/4.0, mainly because I have heard you write/speak about this f/stop. I love the effect. It is so flattering and beautiful. When I nail the shot I usually think to myself I "Ziserized" the shot and then know that I am done. Thanks again!<BR/><BR/>//OttoOtto Rasconhttps://www.blogger.com/profile/03074945198161055301noreply@blogger.comtag:blogger.com,1999:blog-17534827.post-31810576423591683782009-02-13T11:53:00.000-05:002009-02-13T11:53:00.000-05:00David, I assume you must be back quite a ways to ...David,<BR/> I assume you must be back quite a ways to be shooting with a 200mm on a cropped sensor, and filling the frame with a group of 6. I don't have much experience with larger groups (esp. outdoor) but would think you might go horse yelling posing instructions : )<BR/> Do you change it up for larger groups? 12-24? f8? I understand backing up gets you more DOF with a zoom (at a given aperture) but I could see you shooting 60 yards away for a full bridal party!<BR/><BR/>-AdamAnonymousnoreply@blogger.com