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Message: <blockquote data-quote="LucVogels" data-source="post: 847341" data-attributes="member: 70889">This evening I did some experiments based on the feedback above.The baseline:I have increased the light settings to achieve the maximum intensity in the tank.The first picture I shot with 1/250s F/7.1 (auto ISO 1800) +0.3EV with 24mm focal length.<img src="https://i.postimg.cc/QtGNfZSv/Juli-029.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />The image after is shot at 35mm (34.5 to be exact <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" />) with the same settings. <img src="https://i.postimg.cc/hjW42RM6/Juli-030.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Image 3 has the same settings as 2 but I believe the focus point is changed a small bit.<img src="https://i.postimg.cc/8CrPdzBD/Juli-031.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Image 4 I have increased to F/9, and compensated lighting by reducing shutter to 1/200 and +0.7EV. The ISO changed to 2800. I do not like this image. What is the main cause here?<img src="https://i.postimg.cc/PxsfSn2n/Juli-032.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Image 5 I started to play with an external flasher. I have positioned it under an angle to prevent a nasty reflection. I notice I have to place it far in order to get an evenly distributed flash. Directly flashing from above will never get an evenly distributed intensity; the tank is too big for that. I am also not sure if I like the flash from the front. it does not feel natural or am I wrong?F/9 1/200 ISO 800 and +0.3EV<img src="https://i.postimg.cc/50d9sWnf/Juli-033.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />F/9 1/200 ISO 800 and -0.3EV<img src="https://i.postimg.cc/zBZDxY0J/Juli-034.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

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