ke3vg wrote:
One from Saturday, A7RIV, 600mm + 1.4 TC, 1/2500 sec @ f/5.6, ISO 640
In all this shots, the subject was minimum 600 feet away. I am experimenting with distance and printable size, I like 24X 17 and so far it is working out, the A7R4 is big plus here.
Such amazing clarity in these. Could you share one of them uncropped just so I get an idea how far in you did crop.
Also, what was your analysis of the 600mm and 400mm with TC comparison?
Mukesh, the cropping ability of the A7r IV is simply amazing and the APS-C mode, delivering 26MP rocks! The more I think about it, the less likely we will be seeing a mini APS-C ala A9. Of course, we are not getting the no-blackout feature of the A9, but is a different story.
ke3vg wrote:
More from yesterday
A7RIV , 600 mm + 1.4 TC, 1/2500 sec @ F / 5.6, ISO 640
You showed it again that you can get action-packed images of cormorants !
Also, what was your analysis of the 600mm and 400mm with TC comparison?
Thanks for posting the FF.
The comparison was a little difficult to come to a conclusion. I noticed that even between the two shots of a single combo that the sharpness varied significantly. I also noted that all the shots with the 1.4TC (on both lenses) seemed to lack sharpness. Where as the 2xTC shots and bare lens were better. I think that something was throwing off the consistency of the results so I didn't draw any firm conclusions. Not sure if there is a general issue with your copy of the 1.4TC as well.
I've attached a screen shot of the two 600GM bare lens shots to show what I'm talking about with the shot to shot variability.
Agreed,i think dog running around on first floor with Harwood didn't help. I may have to try again on firm ground. My results of actual shooting, does not show any difference. Will have to try again. thanks.
AGeoJO wrote:
I have been using this lens in the last 2 days at 2 different birding locations. The optical performance is just superb. Although I have been pleased with the AF performance as well but I am not 100% convinced... yet. I simply haven't had the chance to fully evaluate it. Is the AF performance better than my adapted lens? You bet! With that said it is time for me to sell both adapted lenses for my wildlife and birding needs...
Here are a few images from the last two days. The first 3 images were taken this morning. I used a tripod and my A7r III to showcase the IQ that lens can pull. The last 5 images of a burrowing owl carrying a June bug it its beak were taken handheld (phew, not easy to do that for an old fart ). The total frames of the sequence was in the high 20's, using Zone AF with Tracking. And yes, all of them were critically sharp. I am planning of using a monopod at the next outing to catch the flying action though.
As a side note: The vegetation around the spots at both locations sucks.... I wish I could remotely operate a grass trimming device . Just FYI, the images were cropped as needed and edited using LR and PS.
Thank you for stopping by. Please, please post your images taken with that lens using any Sony camera here. ...Show more →
Ok. Those are just gorgeous shots. I am not a birder, but if I were, you would have just cost one of my kids their college fund.
Grenache wrote:
Ok. Those are just gorgeous shots. I am not a birder, but if I were, you would have just cost one of my kids their college fund.
Jim
Jim, thank you very much! Haha, I have been enjoying my retirement for several years and I don’t have to deal with putting children through school anymore. I was there and I did that but it was over long time ago. Although it is more the parent’s responsibility, we are putting some funds aside for the education of our grandkids now to help them out.
For the past month I have been using the A9+600/4 GM to try to get some images of Golden Eagles that hunt in the grasslands near us. So far nothing worth posting. They are very elusive. I have gotten some images of Red-tailed Hawks that show the capability of the 600/4. I use it bare and with the 1.4x TC. The hawks rarely fly close by so lots of reach is needed. The images below are generally about 5-10 MP crops and then downsized to 1.5MP to meet the posting limitations of the site. The lens focuses very quickly and produces very sharp images that can take some cropping. The camera/lens combination is very effective tracking hawks. One morning I took a 141 frame sequence of a hawk fly by, and all 141 were in excellent focus (e.g. image #1). It was against the sky with just a few distant trees so not the most challenging situation, but that is still pretty good performance. The 600/4 is essentially the same excellent performance that I got with the 400/2.8 (before I sold it ).
!
). The total frames of the sequence was in the high 20's, using Zone AF with Tracking. And yes, all of them were critically sharp. I am planning of using a monopod at the next outing to catch the flying action though. 
). 
