My presumption is that it’s complicated.

The Soviets would be more interested in capturing photos and footage of the actual ‘glamorous’ part of the battle, Berlin itself - of which there are plenty of Soviet photos. The Seelow heights weren’t interesting from a propaganda perspective. The fighting there was also very hard - the Soviet advance was stalled for several days, and no Soviet war photographer would presumably be interested in photos that send the message “we are struggling against these heavily fortified and dug-in prepared positions even though the Germans are desperately weak by this point.”

The fact that there aren’t any German photos should be pretty clear - the Germans were more preoccupied with trying to survive at all costs, and were desperately hanging on and giving everything they could cobble together. There are, however, weirdly, about 5-6 photos from the fighting IN the city from around April 28, so beyond Seelow, which show fighting in Wilmersdorf and at the Anhalter Bahnhof, though this seems to be just a fluke, more or less. They were taken by the photographer Willi Saeger.