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| 10-25-2020, 03:15 AM - 2 Likes | #1 |
| Cropped bird photos - which combo of K1/K3, DA300/DFA150450, with/without DA1.4xTC? EDIT Oct 26 9:00am AEST: Sorry for the trouble viewing the photos - I'm a bit out of my depth. I think the problem stems from the browser used to view the photos as I use MS Edge and I can see the header with each photo underneath but when I open the post with Google Chrome then no photos. I will try to attach the photos at the bottom of the post without the headers. Please also note that there is a limit of 15 photos so I have not shown "8. K3 & DFA150450 & TC (975mm) SOOC" I currently have a Tawny Frogmouth nesting in a park nearby and hopefully that means a TF chick or two in the near future, These chicks are very cute and the nest is in a good position to photograph so I am hopeful of getting some nice photos. I am wanting to photograph from about 25m from the nest so as not to disturb the birds and they are generally not shy birds and not showing any nervousness at that distance. I generally use my K1ii and DFA 150450 for bird photos but I wondered if my K3 & DA 300 with or without TC might give a better result. Before I got the K1 and DFA, I used my K3, DA300 and TC and was generally pleased with the results but I have never tried to compare the two kits. With the new babies coming soon, I thought I would do a trial of the combinations and see what differences there is for this application. I see others on this forum asking about this comparison so I thought i would share my results. For both the K1ii and K3, I took 3-5 photos with each of the DA300 and the DFA 150450 and then with each lens with the DA1.4x TC - a total of 8 permutations. All the photos were shot using Tav and 1/500 and F8. The weather was slightly overcast but there was a little variability in light so that ISO's wandered around a little. The RAW files were imported to LR classic, some slightly adjusted for exposure but no other PP, and then exported at 1MB 1400x900 for the Forum. Each photo was also copied and cropped to roughly the same field of view to see the differences in performance. 1. K1 & DA300 (300mm) SOOC 1a K1 & DA300 (300mm) Cropped 2. K1 & DA300 & TC (420mm) SOOC 2a. K1 & DA300 & TC (420mm) Cropped 3. K1 & DFA150450 (450mm) SOOC 3a. K1 & DFA150450 (450mm) Cropped 4. K3 & DA300 (450mm) SOOC 4a. K3 & DA300 (450mm) Cropped 5. K1 & DFA150450 & TC (630mm) SOOC 5a. K1 & DFA150450 & TC (630mm) Cropped 6. K3 & DA300 & TC (630mm) SOOC 6a. K3 & DA300 & TC (630mm) Cropped 7. K3 & DFA150450 (675mm) SOOC 7a. K3 & DFA150450 (675mm) Cropped 8. K3 & DFA150450 & TC (975mm) SOOC 8a. K3 & DFA150450 & TC (975mm) Crop My conclusions are that the cropped photos were all similar with no clear winner. All performed very well. TBH I probably had more variation in the 3-5 shots with each setup than between the various body/lens/TC combinations. I see slight losses in sharpness when the TC was used, more so with the DFA150450 . The sensor on the K3 is noticeably noisier than the K1 but the sharpness on the crops was as good or better (higher resolution sensor?). If it was a KP or a Knew instead of the K3 then maybe the sharpness might exceed the K1? So moving forward I will keep using the K1 and DFA150450 without the TC and crop the photos - more for its advantages of zoom & AF than any IQ benefits. Last edited by RedBoomer; 10-25-2020 at 03:17 PM. Reason: Photos were not viewable in some browsers (MS Edge works but not Chrome and others?) | |
| 10-25-2020, 04:26 AM | #2 |
| 10-25-2020, 04:35 AM | #3 |
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good luck are you using the K 1 in crop mode or cropping from full frame mode ? have you looked at this:  Quote: Sensor Resolution 36.40 MP 7360 x 4912 effective pixels Other Resolutions Full frame: 22M (5760x3840), 12M (4224x2816), 2M (1920x1280) APS-C crop: 15M (4800x3200), 12M, 8M (3456x2304), 2M vs Quote: 24.35 MP 6000 x 4000px effective Last edited by aslyfox; 10-25-2020 at 04:42 AM. | |
| 10-25-2020, 05:15 AM | #4 |
Originally posted by aslyfox  good luck are you using the K 1 in crop mode or cropping from full frame mode ? have you looked at this: Don't you think the OP wanted to show the different comparisons? Or... is it just at my end that I can't see any photos? | |
| 10-25-2020, 05:20 AM | #5 |
| Originally posted by aslyfox good luck are you using the K 1 in crop mode or cropping from full frame mode ? have you looked at this: Read more at: Pentax K-1 Review - Specifications | PentaxForums.com Reviews vs Pentax K-3 Review - Specifications | PentaxForums.com Reviews ---------- Post added 25-10-20 at 11:26 PM ---------- Originally posted by MetteHHH UHM... excuse me! I would REALLY like to see this comparison! In fact, this would appear to be, to me, one of the most interesting posts in a very long time! Unfortunately, it looks like the attachments did not load! :O Would you please take a look at that, RedBoomer? Because I would really like to see your tawny frogmouth photos! Thanks. | |
| 10-25-2020, 06:22 AM | #6 |
| Originally posted by RedBoomer Cropping from the full frame SOOC photo in LR ---------- Post added 25-10-20 at 11:26 PM ---------- MetteHHH I can see the photos in the post and you should be able to see them too (unless I have done something wrong which is very possible).. Im sure there will be others with the same problem if I have made an error on my end. Maybe close and reopen PF?? Quote: 9. File attachments The advanced posting screen lets you attach files to your posts. Simply click the "manage attachments" button and then select a file from your computer to upload. Please keep all photos as small as possible and no wider than 850 pixels. Note that you can upload a maximum of 4 Mb of files total (30Mb if you have donated to the site). See how it's done here to insert photos via "Manage Attachments" with screen shots of the controls. Read more at: https://www.pentaxforums.com/forums/3-site-suggestions-help/314-forum-usage-...#ixzz6btCM05EA Last edited by aslyfox; 10-25-2020 at 06:28 AM. | |
| 10-25-2020, 06:52 AM | #7 |
| 10-25-2020, 07:35 AM | #9 |
| 10-25-2020, 08:22 AM | #10 |
| Originally posted by MetteHHH UHM... excuse me! I would REALLY like to see this comparison! In fact, this would appear to be, to me, one of the most interesting posts in a very long time! Unfortunately, it looks like the attachments did not load! :O Would you please take a look at that, RedBoomer? Because I would really like to see your tawny frogmouth photos! Thanks. Quote: <img src="https://www.pentaxforums.com/forums/attachment.php?attachmentid=512216&stc=1&d=1603609033" style="max-width:1200px;max-height:800px;" alt="" border="0"> Steve | |
| 10-25-2020, 08:49 AM | #11 |
| 10-25-2020, 09:06 AM | #12 |
| Originally posted by RedBoomer ...These chicks are very cute ...  camera stuff, got me winging my way over to Google to take a look and check on its cuteness rating. You're right, they are. They have the most extraordinary range of facial features. Most endearing.Back to the boring stuff, I wonder if the results would have tipped further in the K-1's direction in the background had greater brightness range? The K-1 is less problematic in challenging light situations. | |
| 10-25-2020, 09:36 AM | #13 |
| Originally posted by RedBoomer Cropping from the full frame SOOC photo in LR ---------- Post added 25-10-20 at 11:26 PM ---------- MetteHHH I can see the photos in the post and you should be able to see them too (unless I have done something wrong which is very possible).. Im sure there will be others with the same problem if I have made an error on my end. Maybe close and reopen PF?? Originally posted by AstroDave For ANY given lens, your K-3 will give you more pixels per bird than the K-1, by about 25% in each dimension, or about 1.5 times as many pixels total for the bird. See here for some actual numbers of pixels per arcsecond: K-1 Scale Factors - Arcseconds per pixel for several lenses - PentaxForums.com Originally posted by BarryE Well, that, more than the boring camera stuff, got me winging my way over to Google to take a look and check on its cuteness rating. You're right, they are. They have the most extraordinary range of facial features. Most endearing.Back to the boring stuff, I wonder if the results would have tipped further in the K-1's direction in the background had greater brightness range? The K-1 is less problematic in challenging light situations. @AstroDave and @BarryE, you made comments without commenting one way or another on whether you could see the pics or not? | |
| 10-25-2020, 02:00 PM | #14 |
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Post #1 by RedBoomer 
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